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[Commit-gnuradio] [gnuradio] 16/24: digital: Examples for dealing with p


From: git
Subject: [Commit-gnuradio] [gnuradio] 16/24: digital: Examples for dealing with packet comms
Date: Tue, 14 Jun 2016 00:40:58 +0000 (UTC)

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jcorgan pushed a commit to branch packet2
in repository gnuradio.

commit 81a4e19bcb4debcbfd823c726ff188f0cc846832
Author: Tom Rondeau <address@hidden>
Date:   Tue Apr 12 16:25:07 2016 -0400

    digital: Examples for dealing with packet comms
---
 gr-digital/examples/CMakeLists.txt                 |    3 -
 gr-digital/examples/packet/burst_tagger.grc        | 1160 ++++
 .../{transmitter_sim.grc => example_corr_est.grc}  | 3100 ++++------
 ...mux.grc => example_corr_est_and_clock_sync.grc} | 3421 ++---------
 ...sim.grc => example_corr_est_and_phase_sync.grc} | 3242 ++++++-----
 gr-digital/examples/packet/packet_loopback.grc     | 6151 --------------------
 .../examples/packet/packet_loopback_hier.grc       | 1005 ++--
 gr-digital/examples/packet/packet_rx.grc           |  689 +--
 gr-digital/examples/packet/packet_tx.grc           |  403 +-
 gr-digital/examples/packet/parse_packet_header.grc | 5483 -----------------
 .../{transmitter_sim.grc => simple_bpsk_tx.grc}    | 3081 +++++-----
 ...ransmitter_sim.grc => transmitter_sim_hier.grc} | 3113 ++++------
 gr-digital/examples/packet/tx_stage0.grc           |  286 +
 gr-digital/examples/packet/tx_stage1.grc           |  284 +
 gr-digital/examples/packet/tx_stage2.grc           |  494 ++
 gr-digital/examples/packet/tx_stage3.grc           |  445 ++
 .../packet/{packet_tx.grc => tx_stage4.grc}        | 1292 ++--
 .../packet/{packet_tx.grc => tx_stage5.grc}        | 1123 +++-
 .../packet/{transmitter_sim.grc => tx_stage6.grc}  | 3072 ++++------
 .../packet/{transmitter_sim.grc => tx_stage6a.grc} | 3106 ++++------
 .../packet/{packet_sync.grc => uhd_packet_rx.grc}  | 5174 ++++++----------
 ...elate_access_code.grc => uhd_packet_rx_tun.grc} | 3875 +++++-------
 .../{transmitter_sim.grc => uhd_packet_tx.grc}     | 3109 +++++-----
 .../{transmitter_sim.grc => uhd_packet_tx_tun.grc} | 3100 +++++-----
 24 files changed, 20060 insertions(+), 36151 deletions(-)

diff --git a/gr-digital/examples/CMakeLists.txt 
b/gr-digital/examples/CMakeLists.txt
index d1941cc..abf97ac 100644
--- a/gr-digital/examples/CMakeLists.txt
+++ b/gr-digital/examples/CMakeLists.txt
@@ -100,9 +100,6 @@ install(
 # PACKET
 install(
     FILES
-    packet/transmitter_sim.grc
-    packet/packet_sync.grc
-    packet/parse_packet_header.grc
     DESTINATION ${GR_PKG_DIGITAL_EXAMPLES_DIR}/packet
     COMPONENT "digital_python"
 )
diff --git a/gr-digital/examples/packet/burst_tagger.grc 
b/gr-digital/examples/packet/burst_tagger.grc
new file mode 100644
index 0000000..28edee1
--- /dev/null
+++ b/gr-digital/examples/packet/burst_tagger.grc
@@ -0,0 +1,1160 @@
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.10'?>
+<flow_graph>
+  <timestamp>Tue Apr  5 13:57:36 2016</timestamp>
+  <block>
+    <key>options</key>
+    <param>
+      <key>author</key>
+      <value></value>
+    </param>
+    <param>
+      <key>window_size</key>
+      <value></value>
+    </param>
+    <param>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>description</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>generate_options</key>
+      <value>qt_gui</value>
+    </param>
+    <param>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>top_block</value>
+    </param>
+    <param>
+      <key>max_nouts</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>qt_qss_theme</key>
+      <value></value>
+    </param>
+    <param>
+      <key>realtime_scheduling</key>
+      <value></value>
+    </param>
+    <param>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
+    </param>
+    <param>
+      <key>run_options</key>
+      <value>prompt</value>
+    </param>
+    <param>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value></value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(168, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>32000</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_stream_to_tagged_stream</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(432, 99)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_stream_to_tagged_stream_0</value>
+    </param>
+    <param>
+      <key>len_tag_key</key>
+      <value>"packet_len"</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>packet_len</key>
+      <value>16*10</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_throttle</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(248, 107)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_throttle_0</value>
+    </param>
+    <param>
+      <key>ignoretag</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>samples_per_second</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_vector_source_x</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(16, 91)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_vector_source_x_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>repeat</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>tags</key>
+      <value>[]</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>vector</key>
+      <value>[1,1,1,1,1,1,1,1,-1,-1,-1,-1,-1,-1,-1,-1]</value>
+    </param>
+  </block>
+  <block>
+    <key>digital_burst_shaper_xx</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(696, 75)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>digital_burst_shaper_xx_0</value>
+    </param>
+    <param>
+      <key>insert_phasing</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>length_tag_name</key>
+      <value>packet_len</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>post_padding</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>pre_padding</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>window</key>
+      <value>firdes.window(firdes.WIN_HANN, 50, 0)</value>
+    </param>
+  </block>
+  <block>
+    <key>digital_burst_shaper_xx</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(696, 203)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>digital_burst_shaper_xx_0_0</value>
+    </param>
+    <param>
+      <key>insert_phasing</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>length_tag_name</key>
+      <value>packet_len</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>post_padding</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>pre_padding</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>window</key>
+      <value>firdes.window(firdes.WIN_HANN, 50, 0)</value>
+    </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>entags</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(968, 83)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>0,0,1,1</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0</value>
+    </param>
+    <param>
+      <key>legend</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>alpha1</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color1</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker1</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha10</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color10</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker10</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha2</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color2</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker2</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha3</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>label3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker3</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha4</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color4</key>
+      <value>"black"</value>
+    </param>
+    <param>
+      <key>label4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker4</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha5</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker5</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha6</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color6</key>
+      <value>"magenta"</value>
+    </param>
+    <param>
+      <key>label6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker6</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"yellow"</value>
+    </param>
+    <param>
+      <key>label7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker7</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha8</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color8</key>
+      <value>"dark red"</value>
+    </param>
+    <param>
+      <key>label8</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker8</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha9</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
+      <key>label9</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker9</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>name</key>
+      <value>With Phasing Symbols</value>
+    </param>
+    <param>
+      <key>nconnections</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>size</key>
+      <value>512</value>
+    </param>
+    <param>
+      <key>srate</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_delay</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_level</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
+    </param>
+    <param>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>packet_len</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>update_time</key>
+      <value>0.10</value>
+    </param>
+    <param>
+      <key>ylabel</key>
+      <value>Amplitude</value>
+    </param>
+    <param>
+      <key>yunit</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>ymax</key>
+      <value>1.5</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-1.5</value>
+    </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>entags</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(968, 211)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1,0,1,1</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0_0</value>
+    </param>
+    <param>
+      <key>legend</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>alpha1</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color1</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label1</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker1</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha10</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color10</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker10</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha2</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color2</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker2</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha3</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>label3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker3</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha4</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color4</key>
+      <value>"black"</value>
+    </param>
+    <param>
+      <key>label4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker4</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha5</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker5</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha6</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color6</key>
+      <value>"magenta"</value>
+    </param>
+    <param>
+      <key>label6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker6</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"yellow"</value>
+    </param>
+    <param>
+      <key>label7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker7</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha8</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color8</key>
+      <value>"dark red"</value>
+    </param>
+    <param>
+      <key>label8</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker8</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha9</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
+      <key>label9</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker9</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>name</key>
+      <value>Without Phase Symbols</value>
+    </param>
+    <param>
+      <key>nconnections</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>size</key>
+      <value>512</value>
+    </param>
+    <param>
+      <key>srate</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_delay</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_level</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
+    </param>
+    <param>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>packet_len</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>update_time</key>
+      <value>0.10</value>
+    </param>
+    <param>
+      <key>ylabel</key>
+      <value>Amplitude</value>
+    </param>
+    <param>
+      <key>yunit</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>ymax</key>
+      <value>1.5</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-1.5</value>
+    </param>
+  </block>
+  <connection>
+    <source_block_id>blocks_stream_to_tagged_stream_0</source_block_id>
+    <sink_block_id>digital_burst_shaper_xx_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_stream_to_tagged_stream_0</source_block_id>
+    <sink_block_id>digital_burst_shaper_xx_0_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_throttle_0</source_block_id>
+    <sink_block_id>blocks_stream_to_tagged_stream_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_vector_source_x_0</source_block_id>
+    <sink_block_id>blocks_throttle_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>digital_burst_shaper_xx_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>digital_burst_shaper_xx_0_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+</flow_graph>
diff --git a/gr-digital/examples/packet/transmitter_sim.grc 
b/gr-digital/examples/packet/example_corr_est.grc
similarity index 61%
copy from gr-digital/examples/packet/transmitter_sim.grc
copy to gr-digital/examples/packet/example_corr_est.grc
index 8917396..ca07ce1 100644
--- a/gr-digital/examples/packet/transmitter_sim.grc
+++ b/gr-digital/examples/packet/example_corr_est.grc
@@ -1,23 +1,23 @@
-<?xml version='1.0' encoding='ASCII'?>
-<?grc format='1' created='3.7.8'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.10'?>
 <flow_graph>
-  <timestamp>Thu Dec  4 14:34:25 2014</timestamp>
+  <timestamp>Tue Apr  5 13:57:36 2016</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>parse_packet_header_soft</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>window_size</key>
+      <value></value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
+      <key>category</key>
+      <value>Custom</value>
     </param>
     <param>
-      <key>author</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -25,642 +25,700 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>2000,2000</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_coordinate</key>
+      <value>(8, 11)</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>example_corr_est</value>
     </param>
     <param>
       <key>max_nouts</key>
       <value>0</value>
     </param>
     <param>
+      <key>qt_qss_theme</key>
+      <value></value>
+    </param>
+    <param>
       <key>realtime_scheduling</key>
       <value></value>
     </param>
     <param>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
+    </param>
+    <param>
+      <key>run_options</key>
+      <value>prompt</value>
+    </param>
+    <param>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>thread_safe_setters</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>title</key>
       <value></value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(8, 11)</value>
+      <value>(264, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>rate</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>ac</value>
     </param>
     <param>
       <key>value</key>
-      <value>2</value>
+      <value>map(lambda x: int(x), 
list(digital.packet_utils.default_access_code))</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1312, 819)</value>
+      <value>(504, 579)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>k</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>ac_hex</value>
     </param>
     <param>
       <key>value</key>
-      <value>7</value>
+      <value>[0xac, 0xdd, 0xa4, 0xe2, 0xf2, 0x8c, 0x20, 0xfc]</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1240, 819)</value>
+      <value>(584, 515)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>rep</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>eb</value>
     </param>
     <param>
       <key>value</key>
-      <value>3</value>
+      <value>0.22</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1216, 883)</value>
+      <value>(768, 515)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>polys</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>filt_delay</value>
     </param>
     <param>
       <key>value</key>
-      <value>[109, 79]</value>
+      <value>1+(len(rrc_taps)-1)/2</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>value</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1288, 883)</value>
+      <value>(48, 563)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1,0,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>eb</value>
+      <value>freq_off</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Freq. Off.</value>
     </param>
     <param>
-      <key>value</key>
-      <value>0.22</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>start</key>
+      <value>-0.25</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1216, 67)</value>
+      <key>step</key>
+      <value>0.0001</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>stop</key>
+      <value>0.25</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>nfilts</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable_constellation</key>
     <param>
-      <key>value</key>
-      <value>32</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>dims</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1144, 67)</value>
+      <value>(936, 243)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>hdr_const</value>
     </param>
     <param>
-      <key>value</key>
+      <key>rot_sym</key>
       <value>2</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1072, 67)</value>
+      <key>precision</key>
+      <value>8</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
   </block>
   <block>
-    <key>virtual_source</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>rx_mod_header</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>_coordinate</key>
+      <value>(672, 515)</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(16, 379)</value>
+      <key>id</key>
+      <value>mark_delay</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>value</key>
+      <value>38</value>
     </param>
   </block>
   <block>
-    <key>virtual_source</key>
+    <key>variable_modulate_vector</key>
     <param>
-      <key>id</key>
-      <value>rx_mod_payload</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>data</key>
+      <value>ac_hex</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>taps</key>
+      <value>[1]</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(16, 427)</value>
+      <value>(936, 371)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>modulated_sync_word</value>
+    </param>
+    <param>
+      <key>mod</key>
+      <value>rxmod</value>
+    </param>
   </block>
   <block>
-    <key>blocks_tagged_stream_mux</key>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_mux_0</value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>-50</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>_coordinate</key>
+      <value>(176, 435)</value>
     </param>
     <param>
-      <key>ninputs</key>
-      <value>2</value>
+      <key>gui_hint</key>
+      <value>0,1,1,1</value>
     </param>
     <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>id</key>
+      <value>noise</value>
     </param>
     <param>
-      <key>tag_preserve_head_pos</key>
-      <value>0</value>
+      <key>label</key>
+      <value>Noise Power</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>start</key>
+      <value>-50</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>stop</key>
+      <value>10</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(216, 400)</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>blocks_message_strobe</key>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>blocks_message_strobe_0</value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>10</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>msg</key>
-      <value>pmt.intern("TEST")</value>
+      <key>_coordinate</key>
+      <value>(48, 435)</value>
     </param>
     <param>
-      <key>period</key>
-      <value>100</value>
+      <key>gui_hint</key>
+      <value>0,0,1,1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>id</key>
+      <value>path_loss</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>label</key>
+      <value>Path Loss (dB)</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>step</key>
+      <value>5</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(24, 83)</value>
+      <key>stop</key>
+      <value>140</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>fec_async_encoder</key>
+    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>id</key>
-      <value>fec_async_encoder_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>encoder</key>
-      <value>enc</value>
+      <key>alpha</key>
+      <value>eb</value>
     </param>
     <param>
-      <key>packed</key>
-      <value>True</value>
+      <key>_coordinate</key>
+      <value>(1096, 243)</value>
     </param>
     <param>
-      <key>rev_unpack</key>
-      <value>False</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rev_pack</key>
-      <value>False</value>
+      <key>gain</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>id</key>
+      <value>rrc_taps</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>ntaps</key>
+      <value>11*sps</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>samp_rate</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>sym_rate</key>
+      <value>1.0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_rrc_filter_taps</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(80, 171)</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>alpha</key>
+      <value>eb</value>
     </param>
-  </block>
-  <block>
-    <key>digital_crc32_async_bb</key>
     <param>
-      <key>id</key>
-      <value>digital_crc32_async_bb_1</value>
+      <key>_coordinate</key>
+      <value>(304, 515)</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>check</key>
-      <value>False</value>
+      <key>gain</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>id</key>
+      <value>rx_psf_taps</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>ntaps</key>
+      <value>15*sps</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>samp_rate</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>sym_rate</key>
+      <value>1.0</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(424, 91)</value>
+      <value>(672, 579)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>rxmod</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>digital.generic_mod(hdr_const, False, sps, True, eb, False, 
False)</value>
+    </param>
   </block>
   <block>
-    <key>blocks_random_pdu</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>blocks_random_pdu_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>minsize</key>
-      <value>50</value>
+      <key>_coordinate</key>
+      <value>(168, 11)</value>
     </param>
     <param>
-      <key>maxsize</key>
-      <value>100</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>mask</key>
-      <value>0xFF</value>
+      <key>id</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>length_modulo</key>
-      <value>2</value>
+      <key>value</key>
+      <value>10e3</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(512, 515)</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(208, 67)</value>
+      <key>id</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>value</key>
+      <value>4</value>
     </param>
   </block>
   <block>
-    <key>variable_cc_decoder_def</key>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>dec</value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
+      <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>_coordinate</key>
+      <value>(176, 563)</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>gui_hint</key>
+      <value>1,1,1,1</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>4</value>
+      <key>id</key>
+      <value>time_off</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>label</key>
+      <value>Time Off.</value>
     </param>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>start</key>
+      <value>0.9999</value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>step</key>
+      <value>0.00001</value>
     </param>
     <param>
-      <key>state_end</key>
-      <value>-1</value>
+      <key>stop</key>
+      <value>1.0001</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_add_const_vxx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -670,52 +728,48 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1384, 779)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>const</key>
+      <value>-1</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_decoder_def</key>
     <param>
-      <key>id</key>
-      <value>dec</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
+      <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>_coordinate</key>
+      <value>(368, 107)</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>id</key>
+      <value>blocks_add_const_vxx_0</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>prob</key>
-      <value>0.5</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_complex_to_mag_squared</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -725,107 +779,91 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1184, 699)</value>
+      <value>(528, 393)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc</value>
+      <value>blocks_complex_to_mag_squared_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>dim2</key>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_multiply_const_vxx</key>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
-    </param>
-    <param>
-      <key>k</key>
-      <value>k</value>
-    </param>
-    <param>
-      <key>rate</key>
-      <value>rate</value>
-    </param>
-    <param>
-      <key>polys</key>
-      <value>polys</value>
-    </param>
-    <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>const</key>
+      <value>2</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1384, 603)</value>
+      <value>(216, 107)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc</value>
+      <value>blocks_multiply_const_vxx_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
+      <key>vlen</key>
       <value>1</value>
     </param>
-    <param>
-      <key>framebits</key>
-      <value>8000</value>
-    </param>
+  </block>
+  <block>
+    <key>blocks_stream_to_tagged_stream</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -835,44 +873,52 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(992, 603)</value>
+      <value>(664, 99)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
+      <value>blocks_stream_to_tagged_stream_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>len_tag_key</key>
+      <value>"packet_len"</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>packet_len</key>
+      <value>len(ac)+16</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_throttle</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -882,44 +928,52 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(992, 683)</value>
+      <value>(504, 107)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc</value>
+      <value>blocks_throttle_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>ignoretag</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>samples_per_second</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_vector_source_x</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -929,123 +983,119 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1184, 603)</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>noise</value>
+      <key>_coordinate</key>
+      <value>(16, 91)</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Noise Amp</value>
+      <key>id</key>
+      <value>blocks_vector_source_x_0</value>
     </param>
     <param>
-      <key>value</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>0.5</value>
-    </param>
-    <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>repeat</key>
+      <value>True</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>tags</key>
+      <value>[]</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,0,1,1</value>
+      <key>vector</key>
+      <value>[1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0] + ac</value>
     </param>
+  </block>
+  <block>
+    <key>channels_channel_model</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>block_tags</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(40, 627)</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>freq_offset</value>
+      <key>epsilon</key>
+      <value>time_off</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>freq_offset</key>
+      <value>freq_off</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Freq. Offset</value>
+      <key>_coordinate</key>
+      <value>(48, 203)</value>
     </param>
     <param>
-      <key>value</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>1</value>
+      <key>id</key>
+      <value>channels_channel_model_0</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>noise_voltage</key>
+      <value>sps * 10.0**(noise/10.0)</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>seed</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,1,1,1</value>
+      <key>taps</key>
+      <value>10.0**(-path_loss/20.0)</value>
     </param>
+  </block>
+  <block>
+    <key>digital_corr_est_cc</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -1055,2243 +1105,1425 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(152, 627)</value>
+      <value>(264, 211)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
       <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0_0</value>
+      <value>digital_corr_est_cc_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>sps</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>scale_factor</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>symbols</key>
+      <value>modulated_sync_word</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>mark_delay</key>
+      <value>mark_delay</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>threshold</key>
+      <value>0.999</value>
     </param>
+  </block>
+  <block>
+    <key>fir_filter_xxx</key>
     <param>
-      <key>comment</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(336, 211)</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
+      <key>decim</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>_coordinate</key>
+      <value>(528, 219)</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>id</key>
+      <value>fir_filter_xxx_0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
       <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>samp_delay</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(336, 283)</value>
+      <key>taps</key>
+      <value>rx_psf_taps</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>type</key>
+      <value>ccc</value>
     </param>
   </block>
   <block>
-    <key>digital_map_bb</key>
+    <key>interp_fir_filter_xxx</key>
     <param>
-      <key>id</key>
-      <value>digital_map_bb_1_0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>map</key>
-      <value>Const_PLD.pre_diff_code()</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(760, 283)</value>
+      <value>(896, 99)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
       <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>k</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>l</key>
-      <value>Const_PLD.bits_per_symbol()</value>
-    </param>
-    <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <value>interp_fir_filter_xxx_0</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
+      <key>interp</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>samp_delay</key>
+      <value>filt_delay</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(560, 275)</value>
+      <key>taps</key>
+      <value>rrc_taps</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>type</key>
+      <value>ccc</value>
     </param>
   </block>
   <block>
-    <key>digital_map_bb</key>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>digital_map_bb_1</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_HDR.pre_diff_code()</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(720, 211)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 211)</value>
+      <key>gui_hint</key>
+      <value>2,0,1,2</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_HDR.bits_per_symbol()</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>style1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(560, 203)</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>digital_packet_format_async</key>
     <param>
-      <key>id</key>
-      <value>digital_packet_format_async_1</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>formatter</key>
-      <value>formatter</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(80, 232)</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>label3</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0_0</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_PLD.points()</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>dimension</key>
-      <value>1</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>num_ports</key>
-      <value>1</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 275)</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>id</key>
-      <value>mod_header</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1120, 211)</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_HDR.points()</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>dimension</key>
+      <key>style7</key>
       <value>1</value>
     </param>
     <param>
-      <key>num_ports</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 203)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>id</key>
-      <value>mod_payload</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1120, 283)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_packet_formatter_default</key>
-    <param>
-      <key>id</key>
-      <value>formatter</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>access_code</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1072, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
-    <param>
-      <key>id</key>
-      <value>Const_PLD</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_4()[1]</value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_4()[0]</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>4</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
-    <param>
-      <key>id</key>
-      <value>Const_PLD</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(736, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
-    <param>
-      <key>id</key>
-      <value>Const_HDR</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(576, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_rrc_filter_taps</key>
-    <param>
-      <key>id</key>
-      <value>tx_rrc_taps</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gain</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>samp_rate</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>sym_rate</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>alpha</key>
-      <value>eb</value>
-    </param>
-    <param>
-      <key>ntaps</key>
-      <value>5*sps*nfilts</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1304, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
-    <param>
-      <key>id</key>
-      <value>time_offset</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Time Offset</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>start</key>
-      <value>0.99</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>1.01</value>
-    </param>
-    <param>
-      <key>step</key>
-      <value>0.0001</value>
-    </param>
-    <param>
-      <key>widget</key>
-      <value>counter_slider</value>
-    </param>
-    <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
-    </param>
-    <param>
-      <key>min_len</key>
-      <value>200</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>1,0,1,1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(264, 627)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_tab_widget</key>
-    <param>
-      <key>id</key>
-      <value>tab0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>num_tabs</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>label0</key>
-      <value>Freq.</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value>Const.</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value>Tab 2</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value>Tab 3</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value>Tab 4</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value>Tab 5</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value>Tab 6</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value>Tab 7</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value>Tab 8</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value>Tab 9</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value>Tab 10</value>
-    </param>
-    <param>
-      <key>label11</key>
-      <value>Tab 11</value>
-    </param>
-    <param>
-      <key>label12</key>
-      <value>Tab 12</value>
-    </param>
-    <param>
-      <key>label13</key>
-      <value>Tab 13</value>
-    </param>
-    <param>
-      <key>label14</key>
-      <value>Tab 14</value>
-    </param>
-    <param>
-      <key>label15</key>
-      <value>Tab 15</value>
-    </param>
-    <param>
-      <key>label16</key>
-      <value>Tab 16</value>
-    </param>
-    <param>
-      <key>label17</key>
-      <value>Tab 17</value>
-    </param>
-    <param>
-      <key>label18</key>
-      <value>Tab 18</value>
-    </param>
-    <param>
-      <key>label19</key>
-      <value>Tab 19</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>2,1,1,1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(40, 755)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
-    </param>
-    <param>
-      <key>yunit</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>2500</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>2,0,1,1</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_delay</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>label4</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker4</key>
+      <key>marker8</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width5</key>
+      <key>style8</key>
       <value>1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>style5</key>
+      <key>width8</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
+      <key>alpha9</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>label7</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker7</key>
+      <key>marker9</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>style8</key>
+      <key>style9</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
       <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width10</key>
+      <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>size</key>
+      <value>512</value>
     </param>
     <param>
-      <key>style10</key>
+      <key>srate</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>tr_delay</key>
+      <value>15</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 339)</value>
+      <key>tr_tag</key>
+      <value>corr_start</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
-  </block>
-  <block>
-    <key>digital_burst_shaper_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_burst_shaper_xx_0</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>window</key>
-      <value>firdes.window(firdes.WIN_HANN, 20, 0)</value>
+      <key>ymax</key>
+      <value>1.5</value>
     </param>
     <param>
-      <key>pre_padding</key>
-      <value>20</value>
+      <key>ymin</key>
+      <value>-1.5</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>post_padding</key>
-      <value>20</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>insert_phasing</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>length_tag_name</key>
-      <value>"packet_len"</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(528, 299)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(448, 379)</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
+    <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
     <param>
       <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
+      <value>qtgui_time_sink_x_0_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>type</key>
-      <value>ccf</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>rrate</key>
-      <value>sps</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>taps</key>
-      <value>tx_rrc_taps</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>atten</key>
-      <value>100</value>
+      <key>style1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>samp_delay</key>
-      <value>0</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>color10</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>width10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha2</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color2</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(680, 387)</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>channels_channel_model</key>
     <param>
-      <key>id</key>
-      <value>channels_channel_model_0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>noise_voltage</key>
-      <value>noise</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>freq_offset</key>
-      <value>freq_offset</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>epsilon</key>
-      <value>time_offset</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>taps</key>
-      <value>1.0</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>seed</key>
-      <value>0</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>block_tags</key>
-      <value>False</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(936, 379)</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>freqhalf</key>
-      <value>True</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>fc</key>
-      <value>0</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>bw</key>
+      <key>style6</key>
       <value>1</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>average</key>
-      <value>1.0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>style7</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>showports</key>
-      <value>True</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
+      <key>marker9</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style9</key>
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>name</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>size</key>
+      <value>512</value>
     </param>
     <param>
-      <key>width2</key>
+      <key>srate</key>
       <value>1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>tr_delay</key>
+      <value>15</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>tr_level</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>tr_tag</key>
+      <value>corr_est</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>ymax</key>
+      <value>100</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>ymin</key>
+      <value>-100</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>label6</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(720, 371)</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0_0_0</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha8</key>
+      <key>alpha1</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label9</key>
+      <key>color1</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
+      <key>marker1</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style1</key>
       <value>1</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha9</key>
+      <key>alpha10</key>
       <value>1.0</value>
     </param>
     <param>
+      <key>color10</key>
+      <value>"blue"</value>
+    </param>
+    <param>
       <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>width10</key>
+      <key>marker10</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style10</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha10</key>
+      <key>alpha2</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 419)</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>size</key>
-      <value>1024</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>xmin</key>
-      <value>-2</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>xmax</key>
-      <value>2</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>width4</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>0</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>0</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>0</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>0</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"red"</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>0</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>label4</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"red"</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>0</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>0</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>size</key>
+      <value>512</value>
     </param>
     <param>
-      <key>width5</key>
+      <key>srate</key>
       <value>1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"red"</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>0</value>
+      <key>tr_delay</key>
+      <value>15</value>
     </param>
     <param>
-      <key>marker5</key>
+      <key>tr_level</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>tr_tag</key>
+      <value>corr_est</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"red"</value>
+      <key>type</key>
+      <value>float</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>0</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>0</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>ymax</key>
+      <value>4000</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>ymin</key>
+      <value>-100</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_tab_widget</key>
     <param>
-      <key>color7</key>
-      <value>"red"</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>style7</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>_coordinate</key>
+      <value>(296, 435)</value>
     </param>
     <param>
-      <key>label8</key>
+      <key>gui_hint</key>
       <value></value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"red"</value>
+      <key>id</key>
+      <value>tab0</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>0</value>
+      <key>label0</key>
+      <value>Corr</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>0</value>
+      <key>label1</key>
+      <value>|Corr|^2</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>label10</key>
+      <value>Tab 10</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>label11</key>
+      <value>Tab 11</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>label12</key>
+      <value>Tab 12</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"red"</value>
+      <key>label13</key>
+      <value>Tab 13</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>0</value>
+      <key>label14</key>
+      <value>Tab 14</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>0</value>
+      <key>label15</key>
+      <value>Tab 15</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>label16</key>
+      <value>Tab 16</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>label17</key>
+      <value>Tab 17</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>label18</key>
+      <value>Tab 18</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"red"</value>
+      <key>label19</key>
+      <value>Tab 19</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>0</value>
+      <key>label2</key>
+      <value>Tab 2</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>0</value>
+      <key>label3</key>
+      <value>Tab 3</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>label4</key>
+      <value>Tab 4</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>label5</key>
+      <value>Tab 5</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>label6</key>
+      <value>Tab 6</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>label7</key>
+      <value>Tab 7</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 499)</value>
+      <key>label8</key>
+      <value>Tab 8</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>label9</key>
+      <value>Tab 9</value>
+    </param>
+    <param>
+      <key>num_tabs</key>
+      <value>2</value>
     </param>
   </block>
   <connection>
-    <source_block_id>rx_mod_header</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
+    <source_block_id>blocks_add_const_vxx_0</source_block_id>
+    <sink_block_id>blocks_throttle_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>rx_mod_payload</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>1</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_crc32_async_bb_1</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>fec_async_encoder_0</source_block_id>
-    <sink_block_id>digital_packet_format_async_1</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
-    <source_key>header</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
-    <source_key>payload</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
+    <source_block_id>blocks_complex_to_mag_squared_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>channels_channel_model_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>blocks_add_const_vxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_tagged_stream_mux_0</source_block_id>
-    <sink_block_id>digital_burst_shaper_xx_0</sink_block_id>
+    <source_block_id>blocks_stream_to_tagged_stream_0</source_block_id>
+    <sink_block_id>interp_fir_filter_xxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_burst_shaper_xx_0</source_block_id>
-    <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
+    <source_block_id>blocks_throttle_0</source_block_id>
+    <sink_block_id>blocks_stream_to_tagged_stream_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <source_block_id>blocks_vector_source_x_0</source_block_id>
+    <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_random_pdu_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
-    <source_key>pdus</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_message_strobe_0</source_block_id>
-    <sink_block_id>blocks_random_pdu_0</sink_block_id>
-    <source_key>strobe</source_key>
-    <sink_key>generate</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_map_bb_1_0</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
+    <sink_block_id>digital_corr_est_cc_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>digital_map_bb_1_0</sink_block_id>
-    <source_key>0</source_key>
+    <source_block_id>digital_corr_est_cc_0</source_block_id>
+    <sink_block_id>blocks_complex_to_mag_squared_0</sink_block_id>
+    <source_key>1</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>digital_map_bb_1</sink_block_id>
-    <source_key>0</source_key>
+    <source_block_id>digital_corr_est_cc_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0_0</sink_block_id>
+    <source_key>1</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_map_bb_1</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
+    <source_block_id>digital_corr_est_cc_0</source_block_id>
+    <sink_block_id>fir_filter_xxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0</source_block_id>
-    <sink_block_id>mod_header</sink_block_id>
+    <source_block_id>fir_filter_xxx_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0_0</source_block_id>
-    <sink_block_id>mod_payload</sink_block_id>
+    <source_block_id>interp_fir_filter_xxx_0</source_block_id>
+    <sink_block_id>channels_channel_model_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-digital/examples/packet/frame_demux.grc 
b/gr-digital/examples/packet/example_corr_est_and_clock_sync.grc
similarity index 50%
rename from gr-digital/examples/packet/frame_demux.grc
rename to gr-digital/examples/packet/example_corr_est_and_clock_sync.grc
index 956a8b9..dfd1959 100644
--- a/gr-digital/examples/packet/frame_demux.grc
+++ b/gr-digital/examples/packet/example_corr_est_and_clock_sync.grc
@@ -1,7 +1,7 @@
 <?xml version='1.0' encoding='utf-8'?>
 <?grc format='1' created='3.7.10'?>
 <flow_graph>
-  <timestamp>Thu Dec  4 14:34:25 2014</timestamp>
+  <timestamp>Tue Apr  5 13:57:36 2016</timestamp>
   <block>
     <key>options</key>
     <param>
@@ -10,7 +10,7 @@
     </param>
     <param>
       <key>window_size</key>
-      <value>2000,2000</value>
+      <value></value>
     </param>
     <param>
       <key>category</key>
@@ -46,7 +46,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>frame_demux</value>
+      <value>example_corr_est_and_clock_sync</value>
     </param>
     <param>
       <key>max_nouts</key>
@@ -82,26 +82,18 @@
     </param>
   </block>
   <block>
-    <key>variable_constellation</key>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(576, 3)</value>
+      <value>(264, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -109,93 +101,26 @@
     </param>
     <param>
       <key>id</key>
-      <value>Const_HDR</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
+      <value>ac</value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
+      <key>value</key>
+      <value>map(lambda x: int(x), 
list(digital.packet_utils.default_access_code))</value>
     </param>
   </block>
   <block>
-    <key>variable_constellation</key>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(736, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>Const_PLD</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_4()[0]</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 3)</value>
+      <value>(504, 595)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -203,23 +128,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>Const_PLD</value>
+      <value>ac_hex</value>
     </param>
     <param>
-      <key>rot_sym</key>
-      <value>4</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_4()[1]</value>
+      <key>value</key>
+      <value>[0xac, 0xdd, 0xa4, 0xe2, 0xf2, 0x8c, 0x20, 0xfc]</value>
     </param>
   </block>
   <block>
@@ -234,7 +147,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1208, 67)</value>
+      <value>(584, 531)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -250,33 +163,6 @@
     </param>
   </block>
   <block>
-    <key>variable_packet_formatter_default</key>
-    <param>
-      <key>access_code</key>
-      <value>digital.packet_utils.default_access_code</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1064, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>formatter</value>
-    </param>
-  </block>
-  <block>
     <key>variable</key>
     <param>
       <key>comment</key>
@@ -284,11 +170,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(896, 131)</value>
+      <value>(768, 531)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -296,11 +182,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>formatter</value>
+      <value>filt_delay</value>
     </param>
     <param>
       <key>value</key>
-      
<value>digital.packet_formatter_counter(digital.packet_utils.default_access_code,
 Const_PLD.bits_per_symbol())</value>
+      <value>1+(len(rrc_taps)-1)/2</value>
     </param>
   </block>
   <block>
@@ -319,11 +205,11 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(136, 843)</value>
+      <value>(48, 563)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>0,1,1,1</value>
+      <value>1,0,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -331,11 +217,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>freq_offset</value>
+      <value>freq_off</value>
     </param>
     <param>
       <key>label</key>
-      <value>Freq. Offset</value>
+      <value>Freq. Off.</value>
     </param>
     <param>
       <key>min_len</key>
@@ -347,15 +233,15 @@
     </param>
     <param>
       <key>start</key>
-      <value>-1</value>
+      <value>-0.25</value>
     </param>
     <param>
       <key>step</key>
-      <value>0.001</value>
+      <value>0.0001</value>
     </param>
     <param>
       <key>stop</key>
-      <value>1</value>
+      <value>0.25</value>
     </param>
     <param>
       <key>rangeType</key>
@@ -367,14 +253,18 @@
     </param>
   </block>
   <block>
-    <key>variable_qtgui_range</key>
+    <key>variable_constellation</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>33</value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
+    </param>
+    <param>
+      <key>dims</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -382,11 +272,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(360, 843)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>2,2,1,1</value>
+      <value>(960, 523)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -394,39 +280,81 @@
     </param>
     <param>
       <key>id</key>
-      <value>mark_delay</value>
+      <value>hdr_const</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Mark Delay</value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>precision</key>
+      <value>8</value>
     </param>
     <param>
-      <key>start</key>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(672, 531)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>step</key>
-      <value>1</value>
+      <key>id</key>
+      <value>mark_delay</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>200</value>
+      <key>value</key>
+      <value>mark_delays[sps]</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value>Tag Marking Delay for 
+Corr Est block, indexed
+by sps.
+
+Found empirically.</value>
     </param>
     <param>
-      <key>rangeType</key>
-      <value>int</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter</value>
+      <key>_coordinate</key>
+      <value>(504, 675)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>mark_delays</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>[0, 0, 34, 56, 87, 119]</value>
     </param>
   </block>
   <block>
@@ -437,11 +365,11 @@
     </param>
     <param>
       <key>data</key>
-      <value>preamble</value>
+      <value>ac_hex</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>taps</key>
@@ -449,7 +377,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1432, 131)</value>
+      <value>(960, 651)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -476,7 +404,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1136, 67)</value>
+      <value>(1104, 451)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -499,7 +427,7 @@
     </param>
     <param>
       <key>value</key>
-      <value>0</value>
+      <value>-50</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -507,11 +435,11 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(24, 843)</value>
+      <value>(176, 435)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>0,0,1,1</value>
+      <value>0,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -523,7 +451,7 @@
     </param>
     <param>
       <key>label</key>
-      <value>Noise Amp</value>
+      <value>Noise Power</value>
     </param>
     <param>
       <key>min_len</key>
@@ -535,15 +463,15 @@
     </param>
     <param>
       <key>start</key>
-      <value>0</value>
+      <value>-50</value>
     </param>
     <param>
       <key>step</key>
-      <value>0.001</value>
+      <value>1</value>
     </param>
     <param>
       <key>stop</key>
-      <value>5</value>
+      <value>10</value>
     </param>
     <param>
       <key>rangeType</key>
@@ -555,18 +483,26 @@
     </param>
   </block>
   <block>
-    <key>variable</key>
+    <key>variable_qtgui_range</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>value</key>
+      <value>10</value>
+    </param>
+    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1432, 3)</value>
+      <value>(48, 435)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>0,0,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -574,11 +510,39 @@
     </param>
     <param>
       <key>id</key>
-      <value>preamble</value>
+      <value>path_loss</value>
     </param>
     <param>
-      <key>value</key>
-      <value>[0xac, 0xdd, 0xa4, 0xe2, 0xf2, 0x8c, 0x20, 0xfc]</value>
+      <key>label</key>
+      <value>Path Loss (dB)</value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>5</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>140</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
@@ -597,7 +561,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1296, 131)</value>
+      <value>(1120, 523)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -605,19 +569,19 @@
     </param>
     <param>
       <key>gain</key>
-      <value>nfilts</value>
+      <value>sps</value>
     </param>
     <param>
       <key>id</key>
-      <value>rx_rrc_taps</value>
+      <value>rrc_taps</value>
     </param>
     <param>
       <key>ntaps</key>
-      <value>5*sps*nfilts</value>
+      <value>11*sps</value>
     </param>
     <param>
       <key>samp_rate</key>
-      <value>nfilts</value>
+      <value>sps</value>
     </param>
     <param>
       <key>sym_rate</key>
@@ -625,7 +589,7 @@
     </param>
   </block>
   <block>
-    <key>variable</key>
+    <key>variable_rrc_filter_taps</key>
     <param>
       <key>comment</key>
       <value></value>
@@ -635,20 +599,90 @@
       <value>True</value>
     </param>
     <param>
+      <key>alpha</key>
+      <value>eb</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1432, 67)</value>
+      <value>(960, 387)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>rxmod</value>
-    </param>
+      <key>gain</key>
+      <value>nfilts</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>rx_psf_taps</value>
+    </param>
+    <param>
+      <key>ntaps</key>
+      <value>11*sps*nfilts</value>
+    </param>
+    <param>
+      <key>samp_rate</key>
+      <value>sps*nfilts</value>
+    </param>
+    <param>
+      <key>sym_rate</key>
+      <value>1.0</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(672, 595)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>rxmod</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>digital.generic_mod(hdr_const, False, sps, True, eb, False, 
False)</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(168, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>samp_rate</value>
+    </param>
     <param>
       <key>value</key>
-      <value>digital.generic_mod(Const_HDR, False, sps, True, eb, False, 
False)</value>
+      <value>10e3</value>
     </param>
   </block>
   <block>
@@ -663,7 +697,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1064, 67)</value>
+      <value>(512, 531)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -694,11 +728,11 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(248, 843)</value>
+      <value>(176, 563)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>0,2,1,1</value>
+      <value>1,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -706,11 +740,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>time_offset</value>
+      <value>time_off</value>
     </param>
     <param>
       <key>label</key>
-      <value>Time Offset</value>
+      <value>Time Off.</value>
     </param>
     <param>
       <key>min_len</key>
@@ -722,7 +756,7 @@
     </param>
     <param>
       <key>start</key>
-      <value>0.99</value>
+      <value>0.9999</value>
     </param>
     <param>
       <key>step</key>
@@ -730,7 +764,7 @@
     </param>
     <param>
       <key>stop</key>
-      <value>1.01</value>
+      <value>1.0001</value>
     </param>
     <param>
       <key>rangeType</key>
@@ -742,50 +776,58 @@
     </param>
   </block>
   <block>
-    <key>variable_rrc_filter_taps</key>
+    <key>blocks_add_const_vxx</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>const</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>alpha</key>
-      <value>eb</value>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1296, 3)</value>
+      <value>(368, 107)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain</key>
-      <value>nfilts</value>
+      <key>id</key>
+      <value>blocks_add_const_vxx_0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>tx_rrc_taps</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>ntaps</key>
-      <value>5*sps*nfilts</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>nfilts</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>sym_rate</key>
-      <value>1.0</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
   </block>
   <block>
-    <key>blocks_message_debug</key>
+    <key>blocks_complex_to_mag_squared</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -800,11 +842,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1616, 729)</value>
+      <value>(528, 457)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -812,11 +854,23 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_message_debug_0_0_0</value>
+      <value>blocks_complex_to_mag_squared_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
     </param>
   </block>
   <block>
-    <key>blocks_message_strobe</key>
+    <key>blocks_multiply_const_vxx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -826,6 +880,10 @@
       <value></value>
     </param>
     <param>
+      <key>const</key>
+      <value>2</value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -835,7 +893,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(24, 83)</value>
+      <value>(216, 107)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -843,27 +901,27 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_message_strobe_0</value>
+      <value>blocks_multiply_const_vxx_0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>msg</key>
-      <value>pmt.intern("TEST")</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
       <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>period</key>
-      <value>500</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
   </block>
   <block>
-    <key>blocks_pdu_to_tagged_stream</key>
+    <key>blocks_stream_to_tagged_stream</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -882,7 +940,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(336, 299)</value>
+      <value>(664, 99)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -890,15 +948,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>byte</value>
+      <value>blocks_stream_to_tagged_stream_0</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>len_tag_key</key>
+      <value>"packet_len"</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -908,9 +962,21 @@
       <key>minoutbuf</key>
       <value>0</value>
     </param>
+    <param>
+      <key>packet_len</key>
+      <value>len(ac)+16</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
   </block>
   <block>
-    <key>blocks_pdu_to_tagged_stream</key>
+    <key>blocks_throttle</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -929,7 +995,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(336, 227)</value>
+      <value>(504, 107)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -937,15 +1003,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>byte</value>
+      <value>blocks_throttle_0</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>ignoretag</key>
+      <value>True</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -955,18 +1017,26 @@
       <key>minoutbuf</key>
       <value>0</value>
     </param>
+    <param>
+      <key>samples_per_second</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
   </block>
   <block>
-    <key>blocks_random_pdu</key>
+    <key>blocks_vector_source_x</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>mask</key>
-      <value>0xFF</value>
-    </param>
-    <param>
       <key>comment</key>
       <value></value>
     </param>
@@ -976,11 +1046,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(208, 67)</value>
+      <value>(16, 91)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -988,44 +1058,48 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_random_pdu_0</value>
+      <value>blocks_vector_source_x_0</value>
     </param>
     <param>
-      <key>length_modulo</key>
-      <value>2</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>maxsize</key>
-      <value>20</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>minsize</key>
-      <value>20</value>
+      <key>repeat</key>
+      <value>True</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>tags</key>
+      <value>[]</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_HDR.bits_per_symbol()</value>
+      <key>vector</key>
+      <value>[1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0] + ac</value>
     </param>
+  </block>
+  <block>
+    <key>channels_channel_model</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>block_tags</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>comment</key>
       <value></value>
     </param>
@@ -1038,12 +1112,16 @@
       <value>True</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>epsilon</key>
+      <value>time_off</value>
+    </param>
+    <param>
+      <key>freq_offset</key>
+      <value>freq_off</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(560, 219)</value>
+      <value>(48, 203)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1051,11 +1129,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
-    </param>
-    <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <value>channels_channel_model_0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -1066,20 +1140,20 @@
       <value>0</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>noise_voltage</key>
+      <value>sps * 10.0**(noise/10.0)</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>seed</key>
+      <value>0</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_PLD.bits_per_symbol()</value>
+      <key>taps</key>
+      <value>10.0**(-path_loss/20.0)</value>
     </param>
+  </block>
+  <block>
+    <key>digital_corr_est_cc</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -1094,15 +1168,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(560, 291)</value>
+      <value>(264, 211)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1110,11 +1180,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
-    </param>
-    <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <value>digital_corr_est_cc_0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -1125,20 +1191,28 @@
       <value>0</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>sps</key>
+      <value>sps</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>k</key>
-      <value>Const_PLD.bits_per_symbol()</value>
+      <key>scale_factor</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>l</key>
-      <value>8</value>
+      <key>symbols</key>
+      <value>modulated_sync_word</value>
+    </param>
+    <param>
+      <key>mark_delay</key>
+      <value>mark_delay</value>
+    </param>
+    <param>
+      <key>threshold</key>
+      <value>0.999</value>
     </param>
+  </block>
+  <block>
+    <key>digital_pfb_clock_sync_xxx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -1156,12 +1230,12 @@
       <value>1</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>filter_size</key>
+      <value>nfilts</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(976, 827)</value>
+      <value>(520, 203)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1169,27 +1243,47 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_repack_bits_bb_0_1</value>
+      <value>digital_pfb_clock_sync_xxx_0</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>"payload bits"</value>
+      <key>init_phase</key>
+      <value>nfilts/2</value>
+    </param>
+    <param>
+      <key>loop_bw</key>
+      <value>6.28/400.0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
+      <key>max_dev</key>
+      <value>1.5</value>
+    </param>
+    <param>
       <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>True</value>
+      <key>osps</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>sps</key>
+      <value>sps</value>
+    </param>
+    <param>
+      <key>taps</key>
+      <value>rx_psf_taps</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>ccf</value>
     </param>
   </block>
   <block>
-    <key>blocks_tag_debug</key>
+    <key>interp_fir_filter_xxx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -1203,16 +1297,12 @@
       <value></value>
     </param>
     <param>
-      <key>display</key>
-      <value>True</value>
-    </param>
-    <param>
       <key>_enabled</key>
-      <value>1</value>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1072, 499)</value>
+      <value>(896, 99)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1220,2124 +1310,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_tag_debug_0</value>
+      <value>interp_fir_filter_xxx_0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>filter</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value></value>
-    </param>
-    <param>
-      <key>num_inputs</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_multiply_length</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(936, 417)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_multiply_length_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>c</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_mux</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(216, 401)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_mux_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>ninputs</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>tag_preserve_head_pos</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_to_pdu</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1168, 835)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_to_pdu_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>tag</key>
-      <value>"payload bits"</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1224, 515)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>chan_data</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Chan Data</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(48, 571)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>chan_rx_data</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Chan Data</value>
-    </param>
-  </block>
-  <block>
-    <key>channels_channel_model</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>block_tags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>epsilon</key>
-      <value>time_offset</value>
-    </param>
-    <param>
-      <key>freq_offset</key>
-      <value>freq_offset</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1224, 387)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>channels_channel_model_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>noise_voltage</key>
-      <value>noise</value>
-    </param>
-    <param>
-      <key>seed</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>1.0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_burst_shaper_xx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(448, 379)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_burst_shaper_xx_0</value>
-    </param>
-    <param>
-      <key>insert_phasing</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>length_tag_name</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>post_padding</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>pre_padding</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>window</key>
-      <value>firdes.window(firdes.WIN_HANN, 20, 0)</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>dimension</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 219)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0</value>
-    </param>
-    <param>
-      <key>in_type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>num_ports</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>out_type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>symbol_table</key>
-      <value>Const_HDR.points()</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>dimension</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 291)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0_0</value>
-    </param>
-    <param>
-      <key>in_type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>num_ports</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>out_type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>symbol_table</key>
-      <value>Const_PLD.points()</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_constellation_decoder_cb</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>constellation</key>
-      <value>Const_HDR</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1072, 603)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_constellation_decoder_cb_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_constellation_decoder_cb</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>constellation</key>
-      <value>Const_PLD</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(976, 723)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_constellation_decoder_cb_0_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_corr_est_cc</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(48, 619)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_corr_est_cc_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>sps</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>symbols</key>
-      <value>modulated_sync_word</value>
-    </param>
-    <param>
-      <key>mark_delay</key>
-      <value>mark_delay</value>
-    </param>
-    <param>
-      <key>threshold</key>
-      <value>0.9</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_costas_loop_cc</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(504, 585)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_costas_loop_cc_0_0</value>
-    </param>
-    <param>
-      <key>w</key>
-      <value>6.28/100.0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>order</key>
-      <value>Const_HDR.arity()</value>
-    </param>
-    <param>
-      <key>use_snr</key>
-      <value>False</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_crc32_async_bb</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1400, 835)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_crc32_async_bb_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>check</key>
-      <value>True</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_crc32_async_bb</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(424, 91)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_crc32_async_bb_1</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>check</key>
-      <value>False</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_header_payload_demux</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(712, 571)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>guard_interval</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>header_len</key>
-      <value>formatter.header_nbits()</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_header_payload_demux_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>items_per_symbol</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>length_tag_key</key>
-      <value>"payload bits"</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>output_symbols</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>samp_rate</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>special_tags</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>timing_tag_key</key>
-      <value>"rx_time"</value>
-    </param>
-    <param>
-      <key>trigger_tag_key</key>
-      <value>"time_est"</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(760, 227)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_map_bb_1</value>
-    </param>
-    <param>
-      <key>map</key>
-      <value>Const_HDR.pre_diff_code()</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(760, 299)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_map_bb_1_0</value>
-    </param>
-    <param>
-      <key>map</key>
-      <value>Const_PLD.pre_diff_code()</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_packet_format_async</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>formatter</key>
-      <value>formatter</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(80, 241)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_packet_format_async_1</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_packet_parse_x</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>formatter</key>
-      <value>formatter</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1360, 715)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_packet_parse_x_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>threshold</key>
-      <value>3</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>b</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_pfb_clock_sync_xxx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>filter_size</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(280, 579)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_pfb_clock_sync_xxx_0</value>
-    </param>
-    <param>
-      <key>init_phase</key>
-      <value>nfilts/2</value>
-    </param>
-    <param>
-      <key>loop_bw</key>
-      <value>6.28/100.0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>max_dev</key>
-      <value>1.5</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>osps</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>sps</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>rx_rrc_taps</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>ccf</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1120, 227)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>mod_header</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1120, 299)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>mod_payload</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
-    </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(680, 387)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>rrate</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>samp_delay</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>atten</key>
-      <value>100</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>tx_rrc_taps</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>ccf</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1480, 515)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>xmax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>xmin</key>
-      <value>-2</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(600, 763)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0_0_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>800</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>xmax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>xmin</key>
-      <value>-2</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>average</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>bw</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>fc</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>fftsize</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1480, 435)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>interp</key>
+      <value>sps</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -3348,97 +1325,33 @@
       <value>0</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>showports</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>freqhalf</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>samp_delay</key>
+      <value>filt_delay</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>taps</key>
+      <value>rrc_taps</value>
     </param>
     <param>
       <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Relative Gain</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>10</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-140</value>
-    </param>
-    <param>
-      <key>units</key>
-      <value>dB</value>
+      <value>ccc</value>
     </param>
   </block>
   <block>
-    <key>qtgui_freq_sink_x</key>
+    <key>qtgui_const_sink_x</key>
     <param>
       <key>autoscale</key>
       <value>False</value>
     </param>
     <param>
-      <key>average</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>bw</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>fc</key>
-      <value>0</value>
-    </param>
-    <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -3447,12 +1360,8 @@
       <value>True</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
-    </param>
-    <param>
       <key>_coordinate</key>
-      <value>(632, 827)</value>
+      <value>(832, 291)</value>
     </param>
     <param>
       <key>gui_hint</key>
@@ -3460,7 +1369,7 @@
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
     <param>
       <key>grid</key>
@@ -3468,7 +1377,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>qtgui_freq_sink_x_0_0</value>
+      <value>qtgui_const_sink_x_0</value>
     </param>
     <param>
       <key>legend</key>
@@ -3487,6 +1396,14 @@
       <value></value>
     </param>
     <param>
+      <key>marker1</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style1</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>width1</key>
       <value>1</value>
     </param>
@@ -3496,13 +1413,21 @@
     </param>
     <param>
       <key>color10</key>
-      <value>"dark blue"</value>
+      <value>"red"</value>
     </param>
     <param>
       <key>label10</key>
       <value></value>
     </param>
     <param>
+      <key>marker10</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style10</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>width10</key>
       <value>1</value>
     </param>
@@ -3519,6 +1444,14 @@
       <value></value>
     </param>
     <param>
+      <key>marker2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style2</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>width2</key>
       <value>1</value>
     </param>
@@ -3528,13 +1461,21 @@
     </param>
     <param>
       <key>color3</key>
-      <value>"green"</value>
+      <value>"red"</value>
     </param>
     <param>
       <key>label3</key>
       <value></value>
     </param>
     <param>
+      <key>marker3</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style3</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>width3</key>
       <value>1</value>
     </param>
@@ -3544,13 +1485,21 @@
     </param>
     <param>
       <key>color4</key>
-      <value>"black"</value>
+      <value>"red"</value>
     </param>
     <param>
       <key>label4</key>
       <value></value>
     </param>
     <param>
+      <key>marker4</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style4</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>width4</key>
       <value>1</value>
     </param>
@@ -3560,11 +1509,19 @@
     </param>
     <param>
       <key>color5</key>
-      <value>"cyan"</value>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>style5</key>
+      <value>0</value>
     </param>
     <param>
       <key>width5</key>
@@ -3576,13 +1533,21 @@
     </param>
     <param>
       <key>color6</key>
-      <value>"magenta"</value>
+      <value>"red"</value>
     </param>
     <param>
       <key>label6</key>
       <value></value>
     </param>
     <param>
+      <key>marker6</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style6</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>width6</key>
       <value>1</value>
     </param>
@@ -3592,13 +1557,21 @@
     </param>
     <param>
       <key>color7</key>
-      <value>"yellow"</value>
+      <value>"red"</value>
     </param>
     <param>
       <key>label7</key>
       <value></value>
     </param>
     <param>
+      <key>marker7</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style7</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>width7</key>
       <value>1</value>
     </param>
@@ -3608,13 +1581,21 @@
     </param>
     <param>
       <key>color8</key>
-      <value>"dark red"</value>
+      <value>"red"</value>
     </param>
     <param>
       <key>label8</key>
       <value></value>
     </param>
     <param>
+      <key>marker8</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style8</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>width8</key>
       <value>1</value>
     </param>
@@ -3624,23 +1605,23 @@
     </param>
     <param>
       <key>color9</key>
-      <value>"dark green"</value>
+      <value>"red"</value>
     </param>
     <param>
       <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>marker9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style9</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
       <key>name</key>
@@ -3651,12 +1632,8 @@
       <value>1</value>
     </param>
     <param>
-      <key>showports</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>freqhalf</key>
-      <value>True</value>
+      <key>size</key>
+      <value>512</value>
     </param>
     <param>
       <key>tr_chan</key>
@@ -3671,6 +1648,10 @@
       <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
+    </param>
+    <param>
       <key>tr_tag</key>
       <value>""</value>
     </param>
@@ -3683,24 +1664,20 @@
       <value>0.10</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>xmax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Relative Gain</value>
+      <key>xmin</key>
+      <value>-2</value>
     </param>
     <param>
       <key>ymax</key>
-      <value>10</value>
+      <value>2</value>
     </param>
     <param>
       <key>ymin</key>
-      <value>-140</value>
-    </param>
-    <param>
-      <key>units</key>
-      <value>dB</value>
+      <value>-2</value>
     </param>
   </block>
   <block>
@@ -3735,11 +1712,11 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1480, 355)</value>
+      <value>(832, 211)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>address@hidden</value>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -3751,7 +1728,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
       <key>legend</key>
@@ -4007,7 +1984,7 @@
     </param>
     <param>
       <key>size</key>
-      <value>2500</value>
+      <value>200</value>
     </param>
     <param>
       <key>srate</key>
@@ -4019,7 +1996,7 @@
     </param>
     <param>
       <key>tr_delay</key>
-      <value>0</value>
+      <value>15</value>
     </param>
     <param>
       <key>tr_level</key>
@@ -4027,7 +2004,7 @@
     </param>
     <param>
       <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
     <param>
       <key>tr_slope</key>
@@ -4035,7 +2012,7 @@
     </param>
     <param>
       <key>tr_tag</key>
-      <value>packet_len</value>
+      <value>corr_start</value>
     </param>
     <param>
       <key>type</key>
@@ -4055,11 +2032,11 @@
     </param>
     <param>
       <key>ymax</key>
-      <value>2</value>
+      <value>1.5</value>
     </param>
     <param>
       <key>ymin</key>
-      <value>-2</value>
+      <value>-1.5</value>
     </param>
   </block>
   <block>
@@ -4090,19 +2067,19 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(664, 907)</value>
+      <value>(528, 363)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>address@hidden</value>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
     <param>
       <key>grid</key>
@@ -4110,7 +2087,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>qtgui_time_sink_x_1_0_0</value>
+      <value>qtgui_time_sink_x_0_0</value>
     </param>
     <param>
       <key>legend</key>
@@ -4366,7 +2343,7 @@
     </param>
     <param>
       <key>size</key>
-      <value>125</value>
+      <value>512</value>
     </param>
     <param>
       <key>srate</key>
@@ -4378,11 +2355,11 @@
     </param>
     <param>
       <key>tr_delay</key>
-      <value>0</value>
+      <value>15</value>
     </param>
     <param>
       <key>tr_level</key>
-      <value>0.0</value>
+      <value>0</value>
     </param>
     <param>
       <key>tr_mode</key>
@@ -4394,7 +2371,7 @@
     </param>
     <param>
       <key>tr_tag</key>
-      <value>"payload bits"</value>
+      <value>corr_est</value>
     </param>
     <param>
       <key>type</key>
@@ -4414,11 +2391,11 @@
     </param>
     <param>
       <key>ymax</key>
-      <value>2</value>
+      <value>100</value>
     </param>
     <param>
       <key>ymin</key>
-      <value>-2</value>
+      <value>-100</value>
     </param>
   </block>
   <block>
@@ -4449,19 +2426,19 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(48, 715)</value>
+      <value>(720, 435)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>1,0,1,1</value>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
     <param>
       <key>grid</key>
@@ -4469,7 +2446,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>qtgui_time_sink_x_1_0_0_0</value>
+      <value>qtgui_time_sink_x_0_0_0</value>
     </param>
     <param>
       <key>legend</key>
@@ -4725,7 +2702,7 @@
     </param>
     <param>
       <key>size</key>
-      <value>1250</value>
+      <value>512</value>
     </param>
     <param>
       <key>srate</key>
@@ -4737,11 +2714,11 @@
     </param>
     <param>
       <key>tr_delay</key>
-      <value>50</value>
+      <value>15</value>
     </param>
     <param>
       <key>tr_level</key>
-      <value>0.0</value>
+      <value>0</value>
     </param>
     <param>
       <key>tr_mode</key>
@@ -4753,11 +2730,11 @@
     </param>
     <param>
       <key>tr_tag</key>
-      <value>"corr_est"</value>
+      <value>corr_est</value>
     </param>
     <param>
       <key>type</key>
-      <value>complex</value>
+      <value>float</value>
     </param>
     <param>
       <key>update_time</key>
@@ -4765,7 +2742,7 @@
     </param>
     <param>
       <key>ylabel</key>
-      <value>Correlation</value>
+      <value>Amplitude</value>
     </param>
     <param>
       <key>yunit</key>
@@ -4773,65 +2750,11 @@
     </param>
     <param>
       <key>ymax</key>
-      <value>150</value>
+      <value>4000</value>
     </param>
     <param>
       <key>ymin</key>
-      <value>-150</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(16, 379)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>rx_mod_header</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(16, 427)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>rx_mod_payload</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <value>-100</value>
     </param>
   </block>
   <block>
@@ -4850,11 +2773,11 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(24, 971)</value>
+      <value>(296, 435)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>1,1,1,1</value>
+      <value></value>
     </param>
     <param>
       <key>_rotation</key>
@@ -4866,11 +2789,11 @@
     </param>
     <param>
       <key>label0</key>
-      <value>Time</value>
+      <value>Corr</value>
     </param>
     <param>
       <key>label1</key>
-      <value>Freq.</value>
+      <value>|Corr|^2</value>
     </param>
     <param>
       <key>label10</key>
@@ -4914,7 +2837,7 @@
     </param>
     <param>
       <key>label2</key>
-      <value>Const.</value>
+      <value>Tab 2</value>
     </param>
     <param>
       <key>label3</key>
@@ -4946,7 +2869,7 @@
     </param>
     <param>
       <key>num_tabs</key>
-      <value>3</value>
+      <value>2</value>
     </param>
   </block>
   <block>
@@ -4965,11 +2888,11 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(160, 971)</value>
+      <value>(296, 515)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>1,2,1,1</value>
+      <value>2,0,1,2</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -4985,7 +2908,7 @@
     </param>
     <param>
       <key>label1</key>
-      <value>Freq.</value>
+      <value>Const.</value>
     </param>
     <param>
       <key>label10</key>
@@ -5029,7 +2952,7 @@
     </param>
     <param>
       <key>label2</key>
-      <value>Const.</value>
+      <value>Tab 2</value>
     </param>
     <param>
       <key>label3</key>
@@ -5061,253 +2984,85 @@
     </param>
     <param>
       <key>num_tabs</key>
-      <value>3</value>
+      <value>2</value>
     </param>
   </block>
   <connection>
-    <source_block_id>blocks_message_strobe_0</source_block_id>
-    <sink_block_id>blocks_random_pdu_0</sink_block_id>
-    <source_key>strobe</source_key>
-    <sink_key>generate</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_random_pdu_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
-    <source_key>pdus</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>digital_map_bb_1</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>digital_map_bb_1_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_repack_bits_bb_0_1</source_block_id>
-    <sink_block_id>blocks_tagged_stream_to_pdu_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_tagged_stream_multiply_length_0</source_block_id>
-    <sink_block_id>channels_channel_model_0</sink_block_id>
+    <source_block_id>blocks_add_const_vxx_0</source_block_id>
+    <sink_block_id>blocks_throttle_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_tagged_stream_mux_0</source_block_id>
-    <sink_block_id>digital_burst_shaper_xx_0</sink_block_id>
+    <source_block_id>blocks_complex_to_mag_squared_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_tagged_stream_to_pdu_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_0</sink_block_id>
-    <source_key>pdus</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>chan_rx_data</source_block_id>
-    <sink_block_id>digital_corr_est_cc_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>blocks_add_const_vxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>chan_data</sink_block_id>
+    <source_block_id>blocks_stream_to_tagged_stream_0</source_block_id>
+    <sink_block_id>interp_fir_filter_xxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
+    <source_block_id>blocks_throttle_0</source_block_id>
+    <sink_block_id>blocks_stream_to_tagged_stream_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <source_block_id>blocks_vector_source_x_0</source_block_id>
+    <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_burst_shaper_xx_0</source_block_id>
-    <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0</source_block_id>
-    <sink_block_id>mod_header</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0_0</source_block_id>
-    <sink_block_id>mod_payload</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_constellation_decoder_cb_0</source_block_id>
-    <sink_block_id>digital_packet_parse_x_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_constellation_decoder_cb_0_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0_1</sink_block_id>
+    <sink_block_id>digital_corr_est_cc_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>digital_corr_est_cc_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1_0_0_0</sink_block_id>
+    <sink_block_id>blocks_complex_to_mag_squared_0</sink_block_id>
     <source_key>1</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>digital_corr_est_cc_0</source_block_id>
-    <sink_block_id>digital_pfb_clock_sync_xxx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_costas_loop_cc_0_0</source_block_id>
-    <sink_block_id>blocks_tag_debug_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_costas_loop_cc_0_0</source_block_id>
-    <sink_block_id>digital_header_payload_demux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_crc32_async_bb_0</source_block_id>
-    <sink_block_id>blocks_message_debug_0_0_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>print_pdu</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_crc32_async_bb_1</source_block_id>
-    <sink_block_id>digital_packet_format_async_1</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_header_payload_demux_0</source_block_id>
-    <sink_block_id>digital_constellation_decoder_cb_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_header_payload_demux_0</source_block_id>
-    <sink_block_id>digital_constellation_decoder_cb_0_0</sink_block_id>
+    <sink_block_id>qtgui_time_sink_x_0_0</sink_block_id>
     <source_key>1</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_header_payload_demux_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0_0_0</sink_block_id>
-    <source_key>1</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_header_payload_demux_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0_0</sink_block_id>
-    <source_key>1</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_header_payload_demux_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1_0_0</sink_block_id>
-    <source_key>1</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_map_bb_1</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_map_bb_1_0</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0_0</sink_block_id>
+    <source_block_id>digital_corr_est_cc_0</source_block_id>
+    <sink_block_id>digital_pfb_clock_sync_xxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
-    <source_key>header</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
-    <source_key>payload</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_parse_x_0</source_block_id>
-    <sink_block_id>blocks_message_debug_0_0_0</sink_block_id>
-    <source_key>info</source_key>
-    <sink_key>print</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_parse_x_0</source_block_id>
-    <sink_block_id>digital_header_payload_demux_0</sink_block_id>
-    <source_key>info</source_key>
-    <sink_key>header_data</sink_key>
-  </connection>
-  <connection>
     <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
-    <sink_block_id>digital_costas_loop_cc_0_0</sink_block_id>
+    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>blocks_tagged_stream_multiply_length_0</sink_block_id>
+    <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>rx_mod_header</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
+    <source_block_id>interp_fir_filter_xxx_0</source_block_id>
+    <sink_block_id>channels_channel_model_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
-  <connection>
-    <source_block_id>rx_mod_payload</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>1</sink_key>
-  </connection>
 </flow_graph>
diff --git a/gr-digital/examples/packet/transmitter_sim.grc 
b/gr-digital/examples/packet/example_corr_est_and_phase_sync.grc
similarity index 71%
copy from gr-digital/examples/packet/transmitter_sim.grc
copy to gr-digital/examples/packet/example_corr_est_and_phase_sync.grc
index 8917396..1e9bbba 100644
--- a/gr-digital/examples/packet/transmitter_sim.grc
+++ b/gr-digital/examples/packet/example_corr_est_and_phase_sync.grc
@@ -1,23 +1,23 @@
-<?xml version='1.0' encoding='ASCII'?>
-<?grc format='1' created='3.7.8'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.10'?>
 <flow_graph>
-  <timestamp>Thu Dec  4 14:34:25 2014</timestamp>
+  <timestamp>Tue Apr  5 13:57:36 2016</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>parse_packet_header_soft</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>window_size</key>
+      <value></value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
+      <key>category</key>
+      <value>Custom</value>
     </param>
     <param>
-      <key>author</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -25,697 +25,758 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>2000,2000</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_coordinate</key>
+      <value>(8, 11)</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>example_corr_est_and_phase_sync</value>
     </param>
     <param>
       <key>max_nouts</key>
       <value>0</value>
     </param>
     <param>
+      <key>qt_qss_theme</key>
+      <value></value>
+    </param>
+    <param>
       <key>realtime_scheduling</key>
       <value></value>
     </param>
     <param>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
+    </param>
+    <param>
+      <key>run_options</key>
+      <value>prompt</value>
+    </param>
+    <param>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>thread_safe_setters</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>title</key>
       <value></value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(8, 11)</value>
+      <value>(280, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>rate</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>ac</value>
     </param>
     <param>
       <key>value</key>
-      <value>2</value>
+      <value>map(lambda x: int(x), 
list(digital.packet_utils.default_access_code))</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1312, 819)</value>
+      <value>(504, 595)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>k</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>ac_hex</value>
     </param>
     <param>
       <key>value</key>
-      <value>7</value>
+      <value>[0xac, 0xdd, 0xa4, 0xe2, 0xf2, 0x8c, 0x20, 0xfc]</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1240, 819)</value>
+      <value>(584, 531)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>rep</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>eb</value>
     </param>
     <param>
       <key>value</key>
-      <value>3</value>
+      <value>0.22</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1216, 883)</value>
+      <value>(768, 531)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>polys</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>filt_delay</value>
     </param>
     <param>
       <key>value</key>
-      <value>[109, 79]</value>
+      <value>1+(len(rrc_taps)-1)/2</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>value</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1288, 883)</value>
+      <value>(48, 563)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1,0,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>eb</value>
+      <value>freq_off</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Freq. Off.</value>
     </param>
     <param>
-      <key>value</key>
-      <value>0.22</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>start</key>
+      <value>-0.25</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1216, 67)</value>
+      <key>step</key>
+      <value>0.0001</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>stop</key>
+      <value>0.25</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>nfilts</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable_constellation</key>
     <param>
-      <key>value</key>
-      <value>32</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>dims</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1144, 67)</value>
+      <value>(960, 523)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>sps</value>
+      <value>hdr_const</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>value</key>
-      <value>2</value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>precision</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1072, 67)</value>
+      <value>(672, 531)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
     <param>
       <key>id</key>
-      <value>rx_mod_header</value>
+      <value>mark_delay</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>mark_delays[sps]</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>comment</key>
+      <value>Tag Marking Delay for 
+Corr Est block, indexed
+by sps.
+
+Found empirically.</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(16, 379)</value>
+      <value>(504, 675)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>mark_delays</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>[0, 0, 34, 56, 87, 119]</value>
+    </param>
   </block>
   <block>
-    <key>virtual_source</key>
+    <key>variable_modulate_vector</key>
     <param>
-      <key>id</key>
-      <value>rx_mod_payload</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>data</key>
+      <value>ac_hex</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>taps</key>
+      <value>[1]</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(16, 427)</value>
+      <value>(960, 651)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>modulated_sync_word</value>
+    </param>
+    <param>
+      <key>mod</key>
+      <value>rxmod</value>
+    </param>
   </block>
   <block>
-    <key>blocks_tagged_stream_mux</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_mux_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>_coordinate</key>
+      <value>(1104, 451)</value>
     </param>
     <param>
-      <key>ninputs</key>
-      <value>2</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
+      <key>id</key>
+      <value>nfilts</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>tag_preserve_head_pos</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
+      <key>value</key>
+      <value>32</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>value</key>
+      <value>-50</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(176, 435)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(216, 400)</value>
+      <key>gui_hint</key>
+      <value>0,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_message_strobe</key>
     <param>
       <key>id</key>
-      <value>blocks_message_strobe_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>msg</key>
-      <value>pmt.intern("TEST")</value>
+      <value>noise</value>
     </param>
     <param>
-      <key>period</key>
-      <value>100</value>
+      <key>label</key>
+      <value>Noise Power</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>start</key>
+      <value>-50</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>stop</key>
+      <value>10</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(24, 83)</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>fec_async_encoder</key>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>fec_async_encoder_0</value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>10</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>encoder</key>
-      <value>enc</value>
+      <key>_coordinate</key>
+      <value>(48, 435)</value>
     </param>
     <param>
-      <key>packed</key>
-      <value>True</value>
+      <key>gui_hint</key>
+      <value>0,0,1,1</value>
     </param>
     <param>
-      <key>rev_unpack</key>
-      <value>False</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rev_pack</key>
-      <value>False</value>
+      <key>id</key>
+      <value>path_loss</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>label</key>
+      <value>Path Loss (dB)</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>start</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>step</key>
+      <value>5</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(80, 171)</value>
+      <key>stop</key>
+      <value>140</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>digital_crc32_async_bb</key>
+    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>id</key>
-      <value>digital_crc32_async_bb_1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>check</key>
-      <value>False</value>
+      <key>alpha</key>
+      <value>eb</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(1120, 523)</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>gain</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>id</key>
+      <value>rrc_taps</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>ntaps</key>
+      <value>11*sps</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(424, 91)</value>
+      <key>samp_rate</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sym_rate</key>
+      <value>1.0</value>
     </param>
   </block>
   <block>
-    <key>blocks_random_pdu</key>
+    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>id</key>
-      <value>blocks_random_pdu_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>minsize</key>
-      <value>50</value>
+      <key>alpha</key>
+      <value>eb</value>
     </param>
     <param>
-      <key>maxsize</key>
-      <value>100</value>
+      <key>_coordinate</key>
+      <value>(960, 387)</value>
     </param>
     <param>
-      <key>mask</key>
-      <value>0xFF</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>length_modulo</key>
-      <value>2</value>
+      <key>gain</key>
+      <value>nfilts</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>id</key>
+      <value>rx_psf_taps</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>ntaps</key>
+      <value>11*sps*nfilts</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>samp_rate</key>
+      <value>sps*nfilts</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>sym_rate</key>
+      <value>1.0</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(208, 67)</value>
+      <value>(672, 595)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>rxmod</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>digital.generic_mod(hdr_const, False, sps, True, eb, False, 
False)</value>
+    </param>
   </block>
   <block>
-    <key>variable_cc_decoder_def</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>dec</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
+      <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>_coordinate</key>
+      <value>(184, 11)</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>dim2</key>
-      <value>4</value>
+      <key>id</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>value</key>
+      <value>10e3</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>_coordinate</key>
+      <value>(512, 531)</value>
     </param>
     <param>
-      <key>state_start</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>state_end</key>
-      <value>-1</value>
+      <key>id</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>value</key>
+      <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>value</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1384, 779)</value>
+      <value>(176, 563)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
+      <value>time_off</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>label</key>
+      <value>Time Off.</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>start</key>
+      <value>0.9999</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>step</key>
+      <value>0.00001</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>stop</key>
+      <value>1.0001</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>prob</key>
-      <value>0.5</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_add_const_vxx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -725,64 +786,48 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1184, 699)</value>
+      <key>const</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>_coordinate</key>
+      <value>(368, 107)</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>id</key>
+      <value>blocks_add_const_vxx_0</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>framebits</key>
-      <value>8000</value>
-    </param>
-    <param>
-      <key>k</key>
-      <value>k</value>
-    </param>
-    <param>
-      <key>rate</key>
-      <value>rate</value>
-    </param>
-    <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>state_start</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_complex_to_mag_squared</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -792,134 +837,146 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1384, 603)</value>
+      <value>(528, 457)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc</value>
+      <value>blocks_complex_to_mag_squared_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_multiply_const_vxx</key>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>const</key>
+      <value>2</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(992, 603)</value>
+      <value>(216, 107)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
+      <value>blocks_multiply_const_vxx_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_stream_to_tagged_stream</key>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(992, 683)</value>
+      <value>(664, 99)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc</value>
+      <value>blocks_stream_to_tagged_stream_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>len_tag_key</key>
+      <value>"packet_len"</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>packet_len</key>
+      <value>len(ac)+16</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_throttle</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -929,819 +986,756 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1184, 603)</value>
+      <value>(504, 107)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
       <key>id</key>
-      <value>noise</value>
+      <value>blocks_throttle_0</value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>ignoretag</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Noise Amp</value>
-    </param>
-    <param>
-      <key>value</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>0.5</value>
-    </param>
-    <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>samples_per_second</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_vector_source_x</key>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,0,1,1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(40, 627)</value>
+      <value>(16, 91)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
       <key>id</key>
-      <value>freq_offset</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Freq. Offset</value>
+      <value>blocks_vector_source_x_0</value>
     </param>
     <param>
-      <key>value</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>repeat</key>
+      <value>True</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>tags</key>
+      <value>[]</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,1,1,1</value>
+      <key>vector</key>
+      <value>[1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0] + ac</value>
     </param>
+  </block>
+  <block>
+    <key>channels_channel_model</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(152, 627)</value>
+      <key>block_tags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0_0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>epsilon</key>
+      <value>time_off</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>freq_offset</key>
+      <value>freq_off</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(48, 203)</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>id</key>
+      <value>channels_channel_model_0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(336, 211)</value>
+      <key>noise_voltage</key>
+      <value>sps * 10.0**(noise/10.0)</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>seed</key>
       <value>0</value>
     </param>
+    <param>
+      <key>taps</key>
+      <value>10.0**(-path_loss/20.0)</value>
+    </param>
   </block>
   <block>
-    <key>blocks_pdu_to_tagged_stream</key>
+    <key>digital_corr_est_cc</key>
     <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(264, 211)</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>id</key>
+      <value>digital_corr_est_cc_0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(336, 283)</value>
+      <key>sps</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>scale_factor</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
-      <key>id</key>
-      <value>digital_map_bb_1_0</value>
+      <key>symbols</key>
+      <value>modulated_sync_word</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>mark_delay</key>
+      <value>mark_delay</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_PLD.pre_diff_code()</value>
+      <key>threshold</key>
+      <value>0.999</value>
     </param>
+  </block>
+  <block>
+    <key>digital_costas_loop_cc</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(760, 283)</value>
+      <value>(760, 209)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
       <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
+      <value>digital_costas_loop_cc_0_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>w</key>
+      <value>6.28/100.0</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_PLD.bits_per_symbol()</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>order</key>
+      <value>hdr_const.arity()</value>
     </param>
     <param>
-      <key>align_output</key>
+      <key>use_snr</key>
       <value>False</value>
     </param>
-    <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
-    </param>
+  </block>
+  <block>
+    <key>digital_pfb_clock_sync_xxx</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>filter_size</key>
+      <value>nfilts</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(560, 275)</value>
+      <value>(520, 203)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
       <key>id</key>
-      <value>digital_map_bb_1</value>
+      <value>digital_pfb_clock_sync_xxx_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>init_phase</key>
+      <value>nfilts/2</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_HDR.pre_diff_code()</value>
+      <key>loop_bw</key>
+      <value>6.28/400.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>max_dev</key>
+      <value>1.5</value>
     </param>
     <param>
       <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>osps</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>sps</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 211)</value>
+      <key>taps</key>
+      <value>rx_psf_taps</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>type</key>
+      <value>ccf</value>
     </param>
   </block>
   <block>
-    <key>blocks_repack_bits_bb</key>
-    <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
-    </param>
+    <key>interp_fir_filter_xxx</key>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_HDR.bits_per_symbol()</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>_coordinate</key>
+      <value>(896, 99)</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>id</key>
+      <value>interp_fir_filter_xxx_0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>interp</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>samp_delay</key>
+      <value>filt_delay</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(560, 203)</value>
+      <key>taps</key>
+      <value>rrc_taps</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>type</key>
+      <value>ccc</value>
     </param>
   </block>
   <block>
-    <key>digital_packet_format_async</key>
-    <param>
-      <key>id</key>
-      <value>digital_packet_format_async_1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
+    <key>qtgui_const_sink_x</key>
     <param>
-      <key>formatter</key>
-      <value>formatter</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(1000, 291)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(80, 232)</value>
+      <key>gui_hint</key>
+      <value>address@hidden: 0,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0_0</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>id</key>
+      <value>qtgui_const_sink_x_0</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_PLD.points()</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>dimension</key>
-      <value>1</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>num_ports</key>
-      <value>1</value>
+      <key>marker1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>style1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>color10</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 275)</value>
+      <key>marker10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style10</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>id</key>
-      <value>mod_header</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1120, 211)</value>
+      <key>marker2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style2</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>color3</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_HDR.points()</value>
+      <key>marker3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dimension</key>
-      <value>1</value>
+      <key>style3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>num_ports</key>
+      <key>width3</key>
       <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>color4</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 203)</value>
+      <key>marker4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style4</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>id</key>
-      <value>mod_payload</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <key>color5</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1120, 283)</value>
+      <key>marker5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style5</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_packet_formatter_default</key>
     <param>
-      <key>id</key>
-      <value>formatter</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>access_code</key>
-      <value>0</value>
+      <key>color6</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>marker6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1072, 3)</value>
+      <key>style6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
-      <key>id</key>
-      <value>Const_PLD</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>color7</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_4()[1]</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_4()[0]</value>
+      <key>marker7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rot_sym</key>
-      <value>4</value>
+      <key>style7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dims</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>color8</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>marker8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 3)</value>
+      <key>style8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
-      <key>id</key>
-      <value>Const_PLD</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>color9</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
+      <key>marker9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rot_sym</key>
-      <value>2</value>
+      <key>style9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dims</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>size</key>
+      <value>512</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(736, 3)</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
-      <key>id</key>
-      <value>Const_HDR</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>rot_sym</key>
+      <key>xmax</key>
       <value>2</value>
     </param>
     <param>
-      <key>dims</key>
-      <value>1</value>
+      <key>xmin</key>
+      <value>-2</value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>ymin</key>
+      <value>-2</value>
+    </param>
+  </block>
+  <block>
+    <key>qtgui_const_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
       <key>alias</key>
@@ -1752,221 +1746,339 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(576, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_rrc_filter_taps</key>
-    <param>
-      <key>id</key>
-      <value>tx_rrc_taps</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>gain</key>
-      <value>nfilts</value>
+      <key>_coordinate</key>
+      <value>(760, 291)</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>nfilts</value>
+      <key>gui_hint</key>
+      <value>address@hidden: 0,0,1,1</value>
     </param>
     <param>
-      <key>sym_rate</key>
-      <value>1.0</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha</key>
-      <value>eb</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>ntaps</key>
-      <value>5*sps*nfilts</value>
+      <key>id</key>
+      <value>qtgui_const_sink_x_0_0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1304, 3)</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>label1</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>time_offset</value>
+      <key>marker1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>style1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Time Offset</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
+      <key>alpha10</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>0.99</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>1.01</value>
+      <key>color10</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.0001</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>marker10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>style10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>1,0,1,1</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(264, 627)</value>
+      <key>marker2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style2</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_tab_widget</key>
     <param>
-      <key>id</key>
-      <value>tab0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>num_tabs</key>
-      <value>2</value>
+      <key>color3</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>label0</key>
-      <value>Freq.</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>label1</key>
-      <value>Const.</value>
+      <key>marker3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label2</key>
-      <value>Tab 2</value>
+      <key>style3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label3</key>
-      <value>Tab 3</value>
+      <key>width3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha4</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color4</key>
+      <value>"red"</value>
     </param>
     <param>
       <key>label4</key>
-      <value>Tab 4</value>
+      <value></value>
+    </param>
+    <param>
+      <key>marker4</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style4</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>width4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha5</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color5</key>
+      <value>"red"</value>
     </param>
     <param>
       <key>label5</key>
-      <value>Tab 5</value>
+      <value></value>
+    </param>
+    <param>
+      <key>marker5</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style5</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>width5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha6</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color6</key>
+      <value>"red"</value>
     </param>
     <param>
       <key>label6</key>
-      <value>Tab 6</value>
+      <value></value>
+    </param>
+    <param>
+      <key>marker6</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style6</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>width6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"red"</value>
     </param>
     <param>
       <key>label7</key>
-      <value>Tab 7</value>
+      <value></value>
+    </param>
+    <param>
+      <key>marker7</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style7</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>width7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha8</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color8</key>
+      <value>"red"</value>
     </param>
     <param>
       <key>label8</key>
-      <value>Tab 8</value>
+      <value></value>
+    </param>
+    <param>
+      <key>marker8</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style8</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>width8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha9</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color9</key>
+      <value>"red"</value>
     </param>
     <param>
       <key>label9</key>
-      <value>Tab 9</value>
+      <value></value>
     </param>
     <param>
-      <key>label10</key>
-      <value>Tab 10</value>
+      <key>marker9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label11</key>
-      <value>Tab 11</value>
+      <key>style9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label12</key>
-      <value>Tab 12</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label13</key>
-      <value>Tab 13</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label14</key>
-      <value>Tab 14</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label15</key>
-      <value>Tab 15</value>
+      <key>size</key>
+      <value>512</value>
     </param>
     <param>
-      <key>label16</key>
-      <value>Tab 16</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label17</key>
-      <value>Tab 17</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>label18</key>
-      <value>Tab 18</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>label19</key>
-      <value>Tab 19</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>2,1,1,1</value>
+      <key>tr_tag</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>update_time</key>
+      <value>0.10</value>
+    </param>
+    <param>
+      <key>xmax</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>xmin</key>
+      <value>-2</value>
+    </param>
+    <param>
+      <key>ymax</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-2</value>
+    </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
       <key>alias</key>
@@ -1977,1321 +2089,1385 @@
       <value></value>
     </param>
     <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>entags</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(40, 755)</value>
+      <value>(1000, 211)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
+    <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
     <param>
       <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>yunit</key>
-      <value>""</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>size</key>
-      <value>2500</value>
+      <key>style1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>srate</key>
+      <key>width1</key>
       <value>1</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>style10</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>width10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha2</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color2</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker2</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha3</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>label3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker3</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha4</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color4</key>
+      <value>"black"</value>
+    </param>
+    <param>
+      <key>label4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker4</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha5</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>entags</key>
-      <value>True</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>2,0,1,1</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style1</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style2</key>
+      <key>width8</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style3</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>size</key>
+      <value>200</value>
     </param>
     <param>
-      <key>width4</key>
+      <key>srate</key>
       <value>1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>tr_delay</key>
+      <value>15</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>tr_tag</key>
+      <value>corr_start</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>ymax</key>
+      <value>1.5</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>ymin</key>
+      <value>-1.5</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label7</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
+      <key>entags</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_enabled</key>
       <value>1</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>_coordinate</key>
+      <value>(528, 363)</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha7</key>
+      <key>grid</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0_0</value>
+    </param>
+    <param>
+      <key>legend</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>alpha1</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style8</key>
+      <key>style1</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha8</key>
+      <key>alpha10</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style9</key>
+      <key>style10</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha9</key>
+      <key>alpha2</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style10</key>
+      <key>style2</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha10</key>
+      <key>alpha3</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 339)</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>digital_burst_shaper_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_burst_shaper_xx_0</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>window</key>
-      <value>firdes.window(firdes.WIN_HANN, 20, 0)</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>pre_padding</key>
-      <value>20</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>post_padding</key>
-      <value>20</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>insert_phasing</key>
-      <value>True</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>length_tag_name</key>
-      <value>"packet_len"</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(448, 379)</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
     <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>type</key>
-      <value>ccf</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>rrate</key>
-      <value>sps</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>taps</key>
-      <value>tx_rrc_taps</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>atten</key>
-      <value>100</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>samp_delay</key>
-      <value>0</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(680, 387)</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>channels_channel_model</key>
     <param>
-      <key>id</key>
-      <value>channels_channel_model_0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>noise_voltage</key>
-      <value>noise</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>freq_offset</key>
-      <value>freq_offset</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>epsilon</key>
-      <value>time_offset</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>taps</key>
-      <value>1.0</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>seed</key>
-      <value>0</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>block_tags</key>
-      <value>False</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>size</key>
+      <value>512</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>srate</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>tr_delay</key>
+      <value>15</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(936, 379)</value>
+      <key>tr_level</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_tag</key>
+      <value>corr_est</value>
     </param>
     <param>
       <key>type</key>
       <value>complex</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>fftsize</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>freqhalf</key>
-      <value>True</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>fc</key>
-      <value>0</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>1</value>
+      <key>ymax</key>
+      <value>100</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>ymin</key>
+      <value>-100</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
       <key>autoscale</key>
       <value>False</value>
     </param>
     <param>
-      <key>average</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>showports</key>
-      <value>True</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>_coordinate</key>
+      <value>(720, 435)</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0_0_0</value>
     </param>
     <param>
       <key>legend</key>
       <value>False</value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color1</key>
       <value>"blue"</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>width2</key>
+      <key>style1</key>
       <value>1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha2</key>
+      <key>alpha10</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width4</key>
+      <key>width10</key>
       <value>1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>label5</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width7</key>
+      <key>width3</key>
       <value>1</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>label8</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>width8</key>
+      <key>marker4</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style4</key>
       <value>1</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha8</key>
+      <key>alpha5</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label9</key>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
+      <key>marker5</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style5</key>
       <value>1</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha9</key>
+      <key>alpha6</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label10</key>
+      <key>color6</key>
+      <value>"magenta"</value>
+    </param>
+    <param>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>width10</key>
+      <key>marker6</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style6</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha10</key>
+      <key>alpha7</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 419)</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>size</key>
-      <value>1024</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>xmin</key>
-      <value>-2</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>xmax</key>
-      <value>2</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
       <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>size</key>
+      <value>512</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>srate</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>tr_delay</key>
+      <value>15</value>
     </param>
     <param>
       <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
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-      <key>width1</key>
-      <value>1</value>
+      <key>tr_tag</key>
+      <value>corr_est</value>
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-      <key>color1</key>
-      <value>"blue"</value>
+      <key>type</key>
+      <value>float</value>
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-      <key>style1</key>
-      <value>0</value>
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-      <key>alpha1</key>
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+      <value>""</value>
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+      <key>ymax</key>
+      <value>4000</value>
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-      <key>width2</key>
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+      <value>-100</value>
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-      <key>color2</key>
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+      <value></value>
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+      <value></value>
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+      <value>(296, 435)</value>
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+      <key>gui_hint</key>
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+      <value>0</value>
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+      <value>|Corr|^2</value>
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+      <value>Tab 12</value>
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-      <key>color4</key>
-      <value>"red"</value>
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+      <value>Tab 13</value>
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-      <key>style4</key>
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+      <value>Tab 14</value>
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+      <value>Tab 15</value>
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+      <value>Tab 3</value>
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-      <key>alpha5</key>
-      <value>1.0</value>
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+      <value>Tab 4</value>
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-      <key>label6</key>
-      <value></value>
+      <key>label5</key>
+      <value>Tab 5</value>
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-      <key>width6</key>
-      <value>1</value>
+      <key>label6</key>
+      <value>Tab 6</value>
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-      <key>color6</key>
-      <value>"red"</value>
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+      <value>Tab 7</value>
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-      <key>style6</key>
-      <value>0</value>
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+      <value>Tab 8</value>
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-      <key>marker6</key>
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+      <value>Tab 9</value>
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-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>num_tabs</key>
+      <value>2</value>
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+  </block>
+  <block>
+    <key>qtgui_tab_widget</key>
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-      <key>label7</key>
+      <key>alias</key>
       <value></value>
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-      <key>width7</key>
-      <value>1</value>
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-    <param>
-      <key>color7</key>
-      <value>"red"</value>
+      <key>comment</key>
+      <value></value>
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-      <key>style7</key>
-      <value>0</value>
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+      <value>True</value>
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-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(296, 515)</value>
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-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>gui_hint</key>
+      <value>2,0,1,2</value>
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-      <key>label8</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
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-      <key>width8</key>
-      <value>1</value>
+      <key>id</key>
+      <value>tab1</value>
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     <param>
-      <key>color8</key>
-      <value>"red"</value>
+      <key>label0</key>
+      <value>Time</value>
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-      <key>style8</key>
-      <value>0</value>
+      <key>label1</key>
+      <value>Const.</value>
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-      <key>marker8</key>
-      <value>0</value>
+      <key>label10</key>
+      <value>Tab 10</value>
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-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>label11</key>
+      <value>Tab 11</value>
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-      <key>label9</key>
-      <value></value>
+      <key>label12</key>
+      <value>Tab 12</value>
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-      <key>width9</key>
-      <value>1</value>
+      <key>label13</key>
+      <value>Tab 13</value>
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-      <key>color9</key>
-      <value>"red"</value>
+      <key>label14</key>
+      <value>Tab 14</value>
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-      <key>style9</key>
-      <value>0</value>
+      <key>label15</key>
+      <value>Tab 15</value>
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-      <key>marker9</key>
-      <value>0</value>
+      <key>label16</key>
+      <value>Tab 16</value>
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-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>label17</key>
+      <value>Tab 17</value>
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-      <key>label10</key>
-      <value></value>
+      <key>label18</key>
+      <value>Tab 18</value>
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-      <key>width10</key>
-      <value>1</value>
+      <key>label19</key>
+      <value>Tab 19</value>
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     <param>
-      <key>color10</key>
-      <value>"red"</value>
+      <key>label2</key>
+      <value>Tab 2</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>0</value>
+      <key>label3</key>
+      <value>Tab 3</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>0</value>
+      <key>label4</key>
+      <value>Tab 4</value>
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     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>label5</key>
+      <value>Tab 5</value>
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     <param>
-      <key>alias</key>
-      <value></value>
+      <key>label6</key>
+      <value>Tab 6</value>
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     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>label7</key>
+      <value>Tab 7</value>
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-      <key>comment</key>
-      <value></value>
+      <key>label8</key>
+      <value>Tab 8</value>
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     <param>
-      <key>_coordinate</key>
-      <value>(1192, 499)</value>
+      <key>label9</key>
+      <value>Tab 9</value>
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     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>num_tabs</key>
+      <value>2</value>
     </param>
   </block>
   <connection>
-    <source_block_id>rx_mod_header</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
+    <source_block_id>blocks_add_const_vxx_0</source_block_id>
+    <sink_block_id>blocks_throttle_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>rx_mod_payload</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>1</sink_key>
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-  <connection>
-    <source_block_id>digital_crc32_async_bb_1</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>fec_async_encoder_0</source_block_id>
-    <sink_block_id>digital_packet_format_async_1</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
-    <source_key>header</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
-    <source_key>payload</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
+    <source_block_id>blocks_complex_to_mag_squared_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>channels_channel_model_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>blocks_add_const_vxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_tagged_stream_mux_0</source_block_id>
-    <sink_block_id>digital_burst_shaper_xx_0</sink_block_id>
+    <source_block_id>blocks_stream_to_tagged_stream_0</source_block_id>
+    <sink_block_id>interp_fir_filter_xxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_burst_shaper_xx_0</source_block_id>
-    <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
+    <source_block_id>blocks_throttle_0</source_block_id>
+    <sink_block_id>blocks_stream_to_tagged_stream_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <source_block_id>blocks_vector_source_x_0</source_block_id>
+    <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
+    <sink_block_id>digital_corr_est_cc_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_random_pdu_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
-    <source_key>pdus</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_message_strobe_0</source_block_id>
-    <sink_block_id>blocks_random_pdu_0</sink_block_id>
-    <source_key>strobe</source_key>
-    <sink_key>generate</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_map_bb_1_0</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0_0</sink_block_id>
-    <source_key>0</source_key>
+    <source_block_id>digital_corr_est_cc_0</source_block_id>
+    <sink_block_id>blocks_complex_to_mag_squared_0</sink_block_id>
+    <source_key>1</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
-    <source_key>0</source_key>
+    <source_block_id>digital_corr_est_cc_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0_0</sink_block_id>
+    <source_key>1</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
+    <source_block_id>digital_corr_est_cc_0</source_block_id>
+    <sink_block_id>digital_pfb_clock_sync_xxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>digital_map_bb_1_0</sink_block_id>
+    <source_block_id>digital_costas_loop_cc_0_0</source_block_id>
+    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>digital_map_bb_1</sink_block_id>
+    <source_block_id>digital_costas_loop_cc_0_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_map_bb_1</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
+    <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
+    <sink_block_id>digital_costas_loop_cc_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0</source_block_id>
-    <sink_block_id>mod_header</sink_block_id>
+    <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
+    <sink_block_id>qtgui_const_sink_x_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0_0</source_block_id>
-    <sink_block_id>mod_payload</sink_block_id>
+    <source_block_id>interp_fir_filter_xxx_0</source_block_id>
+    <sink_block_id>channels_channel_model_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-digital/examples/packet/packet_loopback.grc 
b/gr-digital/examples/packet/packet_loopback.grc
deleted file mode 100644
index 7394c76..0000000
--- a/gr-digital/examples/packet/packet_loopback.grc
+++ /dev/null
@@ -1,6151 +0,0 @@
-<?xml version='1.0' encoding='utf-8'?>
-<?grc format='1' created='3.7.10'?>
-<flow_graph>
-  <timestamp>Thu Dec  4 14:34:25 2014</timestamp>
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-      <value></value>
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-      <key>window_size</key>
-      <value>2000,2000</value>
-    </param>
-    <param>
-      <key>category</key>
-      <value>Custom</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>description</key>
-      <value></value>
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-    <param>
-      <key>_enabled</key>
-      <value>True</value>
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-    <param>
-      <key>_coordinate</key>
-      <value>(8, 11)</value>
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-    <param>
-      <key>_rotation</key>
-      <value>0</value>
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-    <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
-    </param>
-    <param>
-      <key>hier_block_src_path</key>
-      <value>.:</value>
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-    <param>
-      <key>id</key>
-      <value>frame_demux</value>
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-    <param>
-      <key>max_nouts</key>
-      <value>0</value>
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-    <param>
-      <key>qt_qss_theme</key>
-      <value></value>
-    </param>
-    <param>
-      <key>realtime_scheduling</key>
-      <value></value>
-    </param>
-    <param>
-      <key>run_command</key>
-      <value>{python} -u {filename}</value>
-    </param>
-    <param>
-      <key>run_options</key>
-      <value>prompt</value>
-    </param>
-    <param>
-      <key>run</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>thread_safe_setters</key>
-      <value></value>
-    </param>
-    <param>
-      <key>title</key>
-      <value></value>
-    </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
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-    <param>
-      <key>_enabled</key>
-      <value>True</value>
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-      <value>(576, 3)</value>
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-      <value>0</value>
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-      <key>id</key>
-      <value>Const_HDR</value>
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-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(736, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>Const_PLD</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_4()[0]</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>Const_PLD</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>4</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_4()[1]</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_cc_decoder_def</key>
-    <param>
-      <key>padding</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>k</key>
-      <value>k</value>
-    </param>
-    <param>
-      <key>dim1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>dim2</key>
-      <value>4</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>state_end</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>framebits</key>
-      <value>8000</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1416, 1067)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>dec</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>"ok"</value>
-    </param>
-    <param>
-      <key>ndim</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>polys</key>
-      <value>polys</value>
-    </param>
-    <param>
-      <key>rate</key>
-      <value>rate</value>
-    </param>
-    <param>
-      <key>state_start</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_dummy_decoder_def</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>dim1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>dim2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>framebits</key>
-      <value>8000</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1024, 971)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>dec</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>"ok"</value>
-    </param>
-    <param>
-      <key>ndim</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_repetition_decoder_def</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>dim1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>dim2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>framebits</key>
-      <value>8000</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1216, 987)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>dec</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>"ok"</value>
-    </param>
-    <param>
-      <key>ndim</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>rep</key>
-      <value>rep</value>
-    </param>
-    <param>
-      <key>prob</key>
-      <value>0.5</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1208, 67)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>eb</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>0.22</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_cc_encoder_def</key>
-    <param>
-      <key>padding</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>k</key>
-      <value>k</value>
-    </param>
-    <param>
-      <key>dim1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>dim2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>framebits</key>
-      <value>8000</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1416, 891)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>enc</value>
-    </param>
-    <param>
-      <key>ndim</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>polys</key>
-      <value>polys</value>
-    </param>
-    <param>
-      <key>rate</key>
-      <value>rate</value>
-    </param>
-    <param>
-      <key>state_start</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_dummy_encoder_def</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>dim1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>dim2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>framebits</key>
-      <value>8000</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1024, 891)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>enc</value>
-    </param>
-    <param>
-      <key>ndim</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_repetition_encoder_def</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>dim1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>dim2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>framebits</key>
-      <value>8000</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1216, 891)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>enc</value>
-    </param>
-    <param>
-      <key>ndim</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>rep</key>
-      <value>rep</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_packet_formatter_default</key>
-    <param>
-      <key>access_code</key>
-      <value>digital.packet_utils.default_access_code</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1064, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>formatter</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 131)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>formatter</value>
-    </param>
-    <param>
-      <key>value</key>
-      
<value>digital.packet_formatter_counter(digital.packet_utils.default_access_code,
 Const_PLD.bits_per_symbol())</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(136, 843)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>0,1,1,1</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>freq_offset</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Freq. Offset</value>
-    </param>
-    <param>
-      <key>min_len</key>
-      <value>200</value>
-    </param>
-    <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
-    </param>
-    <param>
-      <key>start</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>step</key>
-      <value>0.001</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>rangeType</key>
-      <value>float</value>
-    </param>
-    <param>
-      <key>widget</key>
-      <value>counter_slider</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1272, 1107)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>k</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>7</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>33</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(360, 843)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>2,2,1,1</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>mark_delay</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Mark Delay</value>
-    </param>
-    <param>
-      <key>min_len</key>
-      <value>200</value>
-    </param>
-    <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
-    </param>
-    <param>
-      <key>start</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>step</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>200</value>
-    </param>
-    <param>
-      <key>rangeType</key>
-      <value>int</value>
-    </param>
-    <param>
-      <key>widget</key>
-      <value>counter</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_modulate_vector</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>data</key>
-      <value>preamble</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>[1]</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1432, 131)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>modulated_sync_word</value>
-    </param>
-    <param>
-      <key>mod</key>
-      <value>rxmod</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1136, 67)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>32</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(24, 843)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>0,0,1,1</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>noise</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Noise Amp</value>
-    </param>
-    <param>
-      <key>min_len</key>
-      <value>200</value>
-    </param>
-    <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
-    </param>
-    <param>
-      <key>start</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>step</key>
-      <value>0.001</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>5</value>
-    </param>
-    <param>
-      <key>rangeType</key>
-      <value>float</value>
-    </param>
-    <param>
-      <key>widget</key>
-      <value>counter_slider</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1320, 1171)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>polys</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>[109, 79]</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1432, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>preamble</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>[0xac, 0xdd, 0xa4, 0xe2, 0xf2, 0x8c, 0x20, 0xfc]</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1344, 1107)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>rate</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>2</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1248, 1171)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>rep</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>3</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_rrc_filter_taps</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>alpha</key>
-      <value>eb</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1296, 131)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>gain</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>rx_rrc_taps</value>
-    </param>
-    <param>
-      <key>ntaps</key>
-      <value>5*sps*nfilts</value>
-    </param>
-    <param>
-      <key>samp_rate</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>sym_rate</key>
-      <value>1.0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1432, 67)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>rxmod</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>digital.generic_mod(Const_HDR, False, sps, True, eb, False, 
False)</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1064, 67)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>2</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(248, 843)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>0,2,1,1</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>time_offset</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Time Offset</value>
-    </param>
-    <param>
-      <key>min_len</key>
-      <value>200</value>
-    </param>
-    <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
-    </param>
-    <param>
-      <key>start</key>
-      <value>0.99</value>
-    </param>
-    <param>
-      <key>step</key>
-      <value>0.00001</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>1.01</value>
-    </param>
-    <param>
-      <key>rangeType</key>
-      <value>float</value>
-    </param>
-    <param>
-      <key>widget</key>
-      <value>counter_slider</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_rrc_filter_taps</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>alpha</key>
-      <value>eb</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1296, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>gain</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>tx_rrc_taps</value>
-    </param>
-    <param>
-      <key>ntaps</key>
-      <value>5*sps*nfilts</value>
-    </param>
-    <param>
-      <key>samp_rate</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>sym_rate</key>
-      <value>1.0</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_message_debug</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1640, 729)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_message_debug_0_0_0</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_message_strobe</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(24, 83)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_message_strobe_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>msg</key>
-      <value>pmt.intern("TEST")</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>period</key>
-      <value>1000</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(336, 299)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(336, 227)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_random_pdu</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>mask</key>
-      <value>0xFF</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(208, 67)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_random_pdu_0</value>
-    </param>
-    <param>
-      <key>length_modulo</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>maxsize</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minsize</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
-    <param>
-      <key>k</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>l</key>
-      <value>Const_HDR.bits_per_symbol()</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(560, 219)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
-    </param>
-    <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>align_output</key>
-      <value>False</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
-    <param>
-      <key>k</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>l</key>
-      <value>Const_PLD.bits_per_symbol()</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(560, 291)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
-    </param>
-    <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>align_output</key>
-      <value>False</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_tag_debug</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>display</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(728, 491)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_tag_debug_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>filter</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value></value>
-    </param>
-    <param>
-      <key>num_inputs</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_multiply_length</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(936, 417)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_multiply_length_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>c</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_mux</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(216, 401)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_mux_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>ninputs</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>tag_preserve_head_pos</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_to_pdu</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(976, 811)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_to_pdu_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>float</value>
-    </param>
-    <param>
-      <key>tag</key>
-      <value>"payload bits"</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1224, 515)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>chan_data</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Chan Data</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(48, 571)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>chan_rx_data</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Chan Data</value>
-    </param>
-  </block>
-  <block>
-    <key>channels_channel_model</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>block_tags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>epsilon</key>
-      <value>time_offset</value>
-    </param>
-    <param>
-      <key>freq_offset</key>
-      <value>freq_offset</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1224, 387)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>channels_channel_model_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>noise_voltage</key>
-      <value>noise</value>
-    </param>
-    <param>
-      <key>seed</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>1.0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_burst_shaper_xx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(448, 379)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_burst_shaper_xx_0</value>
-    </param>
-    <param>
-      <key>insert_phasing</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>length_tag_name</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>post_padding</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>pre_padding</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>window</key>
-      <value>firdes.window(firdes.WIN_HANN, 20, 0)</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>dimension</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 219)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0</value>
-    </param>
-    <param>
-      <key>in_type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>num_ports</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>out_type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>symbol_table</key>
-      <value>Const_HDR.points()</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>dimension</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 291)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0_0</value>
-    </param>
-    <param>
-      <key>in_type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>num_ports</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>out_type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>symbol_table</key>
-      <value>Const_PLD.points()</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_constellation_decoder_cb</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>constellation</key>
-      <value>Const_HDR</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1072, 603)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_constellation_decoder_cb_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_constellation_soft_decoder_cf</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>constellation</key>
-      <value>Const_PLD</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(984, 723)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_constellation_soft_decoder_cf_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_corr_est_cc</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(48, 619)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_corr_est_cc_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>sps</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>symbols</key>
-      <value>modulated_sync_word</value>
-    </param>
-    <param>
-      <key>mark_delay</key>
-      <value>mark_delay</value>
-    </param>
-    <param>
-      <key>threshold</key>
-      <value>0.9</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_costas_loop_cc</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(504, 585)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_costas_loop_cc_0_0</value>
-    </param>
-    <param>
-      <key>w</key>
-      <value>6.28/100.0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>order</key>
-      <value>Const_HDR.arity()</value>
-    </param>
-    <param>
-      <key>use_snr</key>
-      <value>False</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_crc32_async_bb</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1448, 811)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_crc32_async_bb_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>check</key>
-      <value>True</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_crc32_async_bb</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(424, 91)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_crc32_async_bb_1</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>check</key>
-      <value>False</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_header_payload_demux</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(712, 571)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>guard_interval</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>header_len</key>
-      <value>formatter.header_nbits()</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_header_payload_demux_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>items_per_symbol</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>length_tag_key</key>
-      <value>"payload bits"</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>output_symbols</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>samp_rate</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>special_tags</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>timing_tag_key</key>
-      <value>"rx_time"</value>
-    </param>
-    <param>
-      <key>trigger_tag_key</key>
-      <value>"time_est"</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(760, 227)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_map_bb_1</value>
-    </param>
-    <param>
-      <key>map</key>
-      <value>Const_HDR.pre_diff_code()</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(760, 299)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_map_bb_1_0</value>
-    </param>
-    <param>
-      <key>map</key>
-      <value>Const_PLD.pre_diff_code()</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_packet_format_async</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>formatter</key>
-      <value>formatter</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(80, 241)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_packet_format_async_1</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_packet_parse_x</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>formatter</key>
-      <value>formatter</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1360, 715)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_packet_parse_x_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>threshold</key>
-      <value>3</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>b</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_pfb_clock_sync_xxx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>filter_size</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(280, 579)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_pfb_clock_sync_xxx_0</value>
-    </param>
-    <param>
-      <key>init_phase</key>
-      <value>nfilts/2</value>
-    </param>
-    <param>
-      <key>loop_bw</key>
-      <value>6.28/100.0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>max_dev</key>
-      <value>1.5</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>osps</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>sps</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>rx_rrc_taps</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>ccf</value>
-    </param>
-  </block>
-  <block>
-    <key>fec_async_decoder</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>decoder</key>
-      <value>dec</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1208, 803)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>fec_async_decoder_0</value>
-    </param>
-    <param>
-      <key>mtu</key>
-      <value>1500</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>packed</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>rev_pack</key>
-      <value>False</value>
-    </param>
-  </block>
-  <block>
-    <key>fec_async_encoder</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>encoder</key>
-      <value>enc</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(80, 171)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>fec_async_encoder_0</value>
-    </param>
-    <param>
-      <key>mtu</key>
-      <value>1500</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>packed</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>rev_pack</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>rev_unpack</key>
-      <value>False</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1120, 227)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>mod_header</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1120, 299)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>mod_payload</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
-    </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(680, 387)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>rrate</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>samp_delay</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>atten</key>
-      <value>100</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>tx_rrc_taps</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>ccf</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1480, 515)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>xmax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>xmin</key>
-      <value>-2</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(600, 763)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0_0_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>800</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>xmax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>xmin</key>
-      <value>-2</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>average</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>bw</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>fc</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>fftsize</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1480, 435)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>showports</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>freqhalf</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Relative Gain</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>10</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-140</value>
-    </param>
-    <param>
-      <key>units</key>
-      <value>dB</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>average</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>bw</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>fc</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>fftsize</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(632, 827)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>showports</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>freqhalf</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Relative Gain</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>10</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-140</value>
-    </param>
-    <param>
-      <key>units</key>
-      <value>dB</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1480, 355)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>2500</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_delay</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
-    </param>
-    <param>
-      <key>yunit</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(664, 907)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1_0_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>125</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_delay</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>"payload bits"</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
-    </param>
-    <param>
-      <key>yunit</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(48, 715)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>1,0,1,1</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1_0_0_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>1250</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_delay</key>
-      <value>50</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>"corr_est"</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>ylabel</key>
-      <value>Correlation</value>
-    </param>
-    <param>
-      <key>yunit</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>150</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-150</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(360, 731)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
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-      <value>Tab 13</value>
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-      <value>Tab 14</value>
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-      <value>Tab 15</value>
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-      <value>Tab 19</value>
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-      <value>Tab 3</value>
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-      <key>label4</key>
-      <value>Tab 4</value>
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-      <value>Tab 6</value>
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-      <value>Tab 9</value>
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-      <value>Tab 14</value>
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-      <key>label4</key>
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-      <key>label5</key>
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-      <key>label7</key>
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-      <key>label8</key>
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-      <key>label9</key>
-      <value>Tab 9</value>
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-    <param>
-      <key>num_tabs</key>
-      <value>3</value>
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-  </block>
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-    <source_block_id>digital_crc32_async_bb_0</source_block_id>
-    <sink_block_id>blocks_message_debug_0_0_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>print_pdu</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_crc32_async_bb_1</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_header_payload_demux_0</source_block_id>
-    <sink_block_id>digital_constellation_decoder_cb_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_header_payload_demux_0</source_block_id>
-    <sink_block_id>digital_constellation_soft_decoder_cf_0</sink_block_id>
-    <source_key>1</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_header_payload_demux_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0_0_0</sink_block_id>
-    <source_key>1</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_header_payload_demux_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0_0</sink_block_id>
-    <source_key>1</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_header_payload_demux_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1_0_0</sink_block_id>
-    <source_key>1</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_map_bb_1</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_map_bb_1_0</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
-    <source_key>header</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
-    <source_key>payload</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_parse_x_0</source_block_id>
-    <sink_block_id>digital_header_payload_demux_0</sink_block_id>
-    <source_key>info</source_key>
-    <sink_key>header_data</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
-    <sink_block_id>digital_costas_loop_cc_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>fec_async_decoder_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>fec_async_encoder_0</source_block_id>
-    <sink_block_id>digital_packet_format_async_1</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>blocks_tagged_stream_multiply_length_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>rx_mod_header</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>rx_mod_payload</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>1</sink_key>
-  </connection>
-</flow_graph>
diff --git a/gr-digital/examples/packet/packet_loopback_hier.grc 
b/gr-digital/examples/packet/packet_loopback_hier.grc
index d5ce95e..1ea8308 100644
--- a/gr-digital/examples/packet/packet_loopback_hier.grc
+++ b/gr-digital/examples/packet/packet_loopback_hier.grc
@@ -144,7 +144,7 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -191,7 +191,7 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>0</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -223,6 +223,69 @@
     </param>
   </block>
   <block>
+    <key>variable_qtgui_range</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(72, 547)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>amp</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Amplitude</value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>0.01</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
     <key>variable_cc_decoder_def</key>
     <param>
       <key>padding</key>
@@ -246,7 +309,7 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>state_end</key>
@@ -258,7 +321,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1328, 667)</value>
+      <value>(1152, 635)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -309,7 +372,7 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>1</value>
+      <value>0</value>
     </param>
     <param>
       <key>framebits</key>
@@ -317,7 +380,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(936, 571)</value>
+      <value>(760, 539)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -360,7 +423,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1128, 587)</value>
+      <value>(952, 555)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -388,6 +451,100 @@
     </param>
   </block>
   <block>
+    <key>variable_dummy_decoder_def</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>dim1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>dim2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>formatter.header_nbits()</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1376, 539)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>dec_hdr</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>"ok"</value>
+    </param>
+    <param>
+      <key>ndim</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_repetition_decoder_def</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>dim1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>dim2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>formatter.header_nbits()</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1560, 555)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>dec_hdr</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>"ok"</value>
+    </param>
+    <param>
+      <key>ndim</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>rep</key>
+      <value>rep</value>
+    </param>
+    <param>
+      <key>prob</key>
+      <value>0.5</value>
+    </param>
+  </block>
+  <block>
     <key>variable</key>
     <param>
       <key>comment</key>
@@ -438,7 +595,7 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>framebits</key>
@@ -446,7 +603,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1328, 491)</value>
+      <value>(1152, 459)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -493,7 +650,7 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>1</value>
+      <value>0</value>
     </param>
     <param>
       <key>framebits</key>
@@ -501,7 +658,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(936, 491)</value>
+      <value>(760, 459)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -540,7 +697,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1128, 491)</value>
+      <value>(952, 459)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -560,6 +717,88 @@
     </param>
   </block>
   <block>
+    <key>variable_dummy_encoder_def</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>dim1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>dim2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>8000</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1376, 459)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>enc_hdr</value>
+    </param>
+    <param>
+      <key>ndim</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_repetition_encoder_def</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>dim1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>dim2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>8000</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1560, 459)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>enc_hdr</value>
+    </param>
+    <param>
+      <key>ndim</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>rep</key>
+      <value>rep</value>
+    </param>
+  </block>
+  <block>
     <key>variable_packet_formatter_default</key>
     <param>
       <key>access_code</key>
@@ -571,7 +810,7 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>0</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -585,6 +824,10 @@
       <key>id</key>
       <value>formatter</value>
     </param>
+    <param>
+      <key>threshold</key>
+      <value>3</value>
+    </param>
   </block>
   <block>
     <key>variable</key>
@@ -594,11 +837,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(728, 75)</value>
+      <value>(728, 91)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -610,7 +853,7 @@
     </param>
     <param>
       <key>value</key>
-      
<value>digital.packet_formatter_counter(digital.packet_utils.default_access_code,
 Const_PLD.bits_per_symbol())</value>
+      
<value>digital.packet_formatter_counter(digital.packet_utils.default_access_code,
 3, Const_PLD.bits_per_symbol())</value>
     </param>
   </block>
   <block>
@@ -629,7 +872,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1000, 307)</value>
+      <value>(984, 275)</value>
     </param>
     <param>
       <key>gui_hint</key>
@@ -657,15 +900,15 @@
     </param>
     <param>
       <key>start</key>
-      <value>-1</value>
+      <value>-0.5</value>
     </param>
     <param>
       <key>step</key>
-      <value>0.001</value>
+      <value>0.0001</value>
     </param>
     <param>
       <key>stop</key>
-      <value>1</value>
+      <value>0.5</value>
     </param>
     <param>
       <key>rangeType</key>
@@ -688,7 +931,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1184, 707)</value>
+      <value>(1008, 675)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -746,7 +989,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(888, 307)</value>
+      <value>(872, 275)</value>
     </param>
     <param>
       <key>gui_hint</key>
@@ -778,7 +1021,7 @@
     </param>
     <param>
       <key>step</key>
-      <value>0.001</value>
+      <value>0.01</value>
     </param>
     <param>
       <key>stop</key>
@@ -805,7 +1048,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1232, 771)</value>
+      <value>(1056, 739)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -832,7 +1075,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1256, 707)</value>
+      <value>(1080, 675)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -859,7 +1102,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1160, 771)</value>
+      <value>(984, 739)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -906,11 +1149,11 @@
     </param>
     <param>
       <key>ntaps</key>
-      <value>5*sps*nfilts</value>
+      <value>11*sps*nfilts</value>
     </param>
     <param>
       <key>samp_rate</key>
-      <value>nfilts</value>
+      <value>nfilts*sps</value>
     </param>
     <param>
       <key>sym_rate</key>
@@ -960,7 +1203,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1112, 307)</value>
+      <value>(1096, 275)</value>
     </param>
     <param>
       <key>gui_hint</key>
@@ -1070,7 +1313,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(472, 337)</value>
+      <value>(544, 321)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1101,7 +1344,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(32, 211)</value>
+      <value>(32, 195)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1129,21 +1372,21 @@
     </param>
   </block>
   <block>
-    <key>blocks_random_pdu</key>
+    <key>blocks_multiply_const_vxx</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>mask</key>
-      <value>0xFF</value>
-    </param>
-    <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>const</key>
+      <value>amp</value>
+    </param>
+    <param>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
@@ -1152,7 +1395,58 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(216, 195)</value>
+      <value>(72, 499)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_multiply_const_vxx_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_random_pdu</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>mask</key>
+      <value>0xFF</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(240, 179)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1168,7 +1462,7 @@
     </param>
     <param>
       <key>maxsize</key>
-      <value>20</value>
+      <value>200</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -1242,7 +1536,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(976, 179)</value>
+      <value>(952, 147)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1292,22 +1586,22 @@
       <value>True</value>
     </param>
     <param>
-      <key>dec</key>
-      <value>dec</value>
-    </param>
-    <param>
       <key>eb</key>
       <value>eb</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(208, 337)</value>
+      <value>(232, 409)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
+      <key>hdr_dec</key>
+      <value>dec_hdr</value>
+    </param>
+    <param>
       <key>hdr_const</key>
       <value>Const_HDR</value>
     </param>
@@ -1328,6 +1622,10 @@
       <value>formatter</value>
     </param>
     <param>
+      <key>pld_dec</key>
+      <value>dec</value>
+    </param>
+    <param>
       <key>pld_const</key>
       <value>Const_PLD</value>
     </param>
@@ -1359,18 +1657,18 @@
       <value>True</value>
     </param>
     <param>
-      <key>enc</key>
-      <value>enc</value>
-    </param>
-    <param>
       <key>_coordinate</key>
-      <value>(432, 179)</value>
+      <value>(496, 163)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
+      <key>hdr_enc</key>
+      <value>enc_hdr</value>
+    </param>
+    <param>
       <key>hdr_const</key>
       <value>Const_HDR</value>
     </param>
@@ -1391,6 +1689,10 @@
       <value>formatter</value>
     </param>
     <param>
+      <key>pld_enc</key>
+      <value>enc</value>
+    </param>
+    <param>
       <key>pld_const</key>
       <value>Const_PLD</value>
     </param>
@@ -1766,11 +2068,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(640, 419)</value>
+      <value>(544, 419)</value>
     </param>
     <param>
       <key>gui_hint</key>
@@ -1925,329 +2227,14 @@
       <value></value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>800</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>xmax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>xmin</key>
-      <value>-2</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>average</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>bw</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>fc</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>fftsize</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1352, 283)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
+      <key>marker5</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style5</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>width5</key>
       <value>1</value>
     </param>
@@ -2257,13 +2244,21 @@
     </param>
     <param>
       <key>color6</key>
-      <value>"magenta"</value>
+      <value>"red"</value>
     </param>
     <param>
       <key>label6</key>
       <value></value>
     </param>
     <param>
+      <key>marker6</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style6</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>width6</key>
       <value>1</value>
     </param>
@@ -2273,13 +2268,21 @@
     </param>
     <param>
       <key>color7</key>
-      <value>"yellow"</value>
+      <value>"red"</value>
     </param>
     <param>
       <key>label7</key>
       <value></value>
     </param>
     <param>
+      <key>marker7</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style7</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>width7</key>
       <value>1</value>
     </param>
@@ -2289,13 +2292,21 @@
     </param>
     <param>
       <key>color8</key>
-      <value>"dark red"</value>
+      <value>"red"</value>
     </param>
     <param>
       <key>label8</key>
       <value></value>
     </param>
     <param>
+      <key>marker8</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style8</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>width8</key>
       <value>1</value>
     </param>
@@ -2305,23 +2316,23 @@
     </param>
     <param>
       <key>color9</key>
-      <value>"dark green"</value>
+      <value>"red"</value>
     </param>
     <param>
       <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>marker9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style9</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
       <key>name</key>
@@ -2332,12 +2343,8 @@
       <value>1</value>
     </param>
     <param>
-      <key>showports</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>freqhalf</key>
-      <value>True</value>
+      <key>size</key>
+      <value>800</value>
     </param>
     <param>
       <key>tr_chan</key>
@@ -2352,6 +2359,10 @@
       <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
+    </param>
+    <param>
       <key>tr_tag</key>
       <value>""</value>
     </param>
@@ -2364,24 +2375,20 @@
       <value>0.10</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>xmax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Relative Gain</value>
+      <key>xmin</key>
+      <value>-2</value>
     </param>
     <param>
       <key>ymax</key>
-      <value>10</value>
+      <value>2</value>
     </param>
     <param>
       <key>ymin</key>
-      <value>-140</value>
-    </param>
-    <param>
-      <key>units</key>
-      <value>dB</value>
+      <value>-2</value>
     </param>
   </block>
   <block>
@@ -2428,11 +2435,11 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(632, 491)</value>
+      <value>(1352, 283)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>address@hidden</value>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -2444,7 +2451,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>qtgui_freq_sink_x_0_0</value>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
       <key>legend</key>
@@ -2680,16 +2687,28 @@
     </param>
   </block>
   <block>
-    <key>qtgui_time_sink_x</key>
+    <key>qtgui_freq_sink_x</key>
     <param>
       <key>autoscale</key>
       <value>False</value>
     </param>
     <param>
+      <key>average</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>bw</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>fc</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>comment</key>
       <value></value>
     </param>
@@ -2702,20 +2721,20 @@
       <value></value>
     </param>
     <param>
-      <key>entags</key>
-      <value>True</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1352, 203)</value>
+      <value>(544, 483)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>address@hidden</value>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -2727,7 +2746,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
+      <value>qtgui_freq_sink_x_0_0</value>
     </param>
     <param>
       <key>legend</key>
@@ -2746,14 +2765,6 @@
       <value></value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>width1</key>
       <value>1</value>
     </param>
@@ -2763,21 +2774,13 @@
     </param>
     <param>
       <key>color10</key>
-      <value>"blue"</value>
+      <value>"dark blue"</value>
     </param>
     <param>
       <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>width10</key>
       <value>1</value>
     </param>
@@ -2794,14 +2797,6 @@
       <value></value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>width2</key>
       <value>1</value>
     </param>
@@ -2818,14 +2813,6 @@
       <value></value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>width3</key>
       <value>1</value>
     </param>
@@ -2842,14 +2829,6 @@
       <value></value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>width4</key>
       <value>1</value>
     </param>
@@ -2866,14 +2845,6 @@
       <value></value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>width5</key>
       <value>1</value>
     </param>
@@ -2890,14 +2861,6 @@
       <value></value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>width6</key>
       <value>1</value>
     </param>
@@ -2914,14 +2877,6 @@
       <value></value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>width7</key>
       <value>1</value>
     </param>
@@ -2938,14 +2893,6 @@
       <value></value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>width8</key>
       <value>1</value>
     </param>
@@ -2962,16 +2909,16 @@
       <value></value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
       <key>name</key>
@@ -2982,22 +2929,18 @@
       <value>1</value>
     </param>
     <param>
-      <key>size</key>
-      <value>2500</value>
+      <key>showports</key>
+      <value>True</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>1</value>
+      <key>freqhalf</key>
+      <value>True</value>
     </param>
     <param>
       <key>tr_chan</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
-    </param>
-    <param>
       <key>tr_level</key>
       <value>0.0</value>
     </param>
@@ -3006,12 +2949,8 @@
       <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
       <key>tr_tag</key>
-      <value>packet_len</value>
+      <value>""</value>
     </param>
     <param>
       <key>type</key>
@@ -3022,20 +2961,24 @@
       <value>0.10</value>
     </param>
     <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
-      <key>yunit</key>
-      <value>""</value>
+      <key>label</key>
+      <value>Relative Gain</value>
     </param>
     <param>
       <key>ymax</key>
-      <value>2</value>
+      <value>10</value>
     </param>
     <param>
       <key>ymin</key>
-      <value>-2</value>
+      <value>-140</value>
+    </param>
+    <param>
+      <key>units</key>
+      <value>dB</value>
     </param>
   </block>
   <block>
@@ -3066,15 +3009,15 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>0</value>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(608, 571)</value>
+      <value>(1352, 203)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>address@hidden</value>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -3086,7 +3029,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>qtgui_time_sink_x_1_0_0</value>
+      <value>qtgui_time_sink_x_1</value>
     </param>
     <param>
       <key>legend</key>
@@ -3342,7 +3285,7 @@
     </param>
     <param>
       <key>size</key>
-      <value>125</value>
+      <value>2500</value>
     </param>
     <param>
       <key>srate</key>
@@ -3362,7 +3305,7 @@
     </param>
     <param>
       <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
       <key>tr_slope</key>
@@ -3370,7 +3313,7 @@
     </param>
     <param>
       <key>tr_tag</key>
-      <value>"payload bits"</value>
+      <value>packet_len</value>
     </param>
     <param>
       <key>type</key>
@@ -3425,11 +3368,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(528, 739)</value>
+      <value>(544, 643)</value>
     </param>
     <param>
       <key>gui_hint</key>
@@ -3788,7 +3731,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(576, 659)</value>
+      <value>(544, 563)</value>
     </param>
     <param>
       <key>gui_hint</key>
@@ -4072,7 +4015,7 @@
     </param>
     <param>
       <key>tr_delay</key>
-      <value>5</value>
+      <value>25</value>
     </param>
     <param>
       <key>tr_level</key>
@@ -4088,7 +4031,7 @@
     </param>
     <param>
       <key>tr_tag</key>
-      <value>"time_est"</value>
+      <value>"payload symbols"</value>
     </param>
     <param>
       <key>type</key>
@@ -4357,7 +4300,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(16, 443)</value>
+      <value>(24, 427)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -4379,6 +4322,12 @@
     <sink_key>generate</sink_key>
   </connection>
   <connection>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>packet_rx_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
     <source_block_id>blocks_random_pdu_0</source_block_id>
     <sink_block_id>packet_tx_0</sink_block_id>
     <source_key>pdus</source_key>
@@ -4411,13 +4360,7 @@
   <connection>
     <source_block_id>packet_rx_0</source_block_id>
     <sink_block_id>qtgui_time_sink_x_1_0_0_0</sink_block_id>
-    <source_key>5</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>packet_rx_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1_0_0_1</sink_block_id>
-    <source_key>2</source_key>
+    <source_key>4</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
@@ -4440,7 +4383,7 @@
   </connection>
   <connection>
     <source_block_id>packet_rx_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1_0_0</sink_block_id>
+    <sink_block_id>qtgui_time_sink_x_1_0_0_1</sink_block_id>
     <source_key>1</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -4452,7 +4395,7 @@
   </connection>
   <connection>
     <source_block_id>virtual_source_0</source_block_id>
-    <sink_block_id>packet_rx_0</sink_block_id>
+    <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-digital/examples/packet/packet_rx.grc 
b/gr-digital/examples/packet/packet_rx.grc
index e2369c6..9e0d365 100644
--- a/gr-digital/examples/packet/packet_rx.grc
+++ b/gr-digital/examples/packet/packet_rx.grc
@@ -93,7 +93,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(152, 323)</value>
+      <value>(32, 355)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -105,7 +105,38 @@
     </param>
     <param>
       <key>value</key>
-      <value>33</value>
+      <value>mark_delays[sps]</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value>Tag Marking Delay for 
+Corr Est block, indexed
+by sps.
+
+Found empirically.</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(32, 419)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>mark_delays</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>[0, 0, 34, 56, 87, 119]</value>
     </param>
   </block>
   <block>
@@ -128,7 +159,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(56, 539)</value>
+      <value>(744, 363)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -155,7 +186,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(400, 331)</value>
+      <value>(8, 91)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -178,11 +209,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(56, 411)</value>
+      <value>(728, 579)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -194,22 +225,23 @@
     </param>
     <param>
       <key>value</key>
-      <value>[0xac, 0xdd, 0xa4, 0xe2, 0xf2, 0x8c, 0x20, 0xfc]</value>
+      <value>preamble_select[int(1.0/hdr_dec.rate())]</value>
     </param>
   </block>
   <block>
     <key>variable</key>
     <param>
       <key>comment</key>
-      <value></value>
+      <value>use when header
+FEC is Dummy</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(56, 475)</value>
+      <value>(560, 467)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -217,38 +249,27 @@
     </param>
     <param>
       <key>id</key>
-      <value>rxmod</value>
+      <value>preamble_dummy</value>
     </param>
     <param>
       <key>value</key>
-      <value>digital.generic_mod(hdr_const, False, sps, True, eb, False, 
False)</value>
+      <value>[0xac, 0xdd, 0xa4, 0xe2, 0xf2, 0x8c, 0x20, 0xfc]</value>
     </param>
   </block>
   <block>
-    <key>blocks_null_sink</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>bus_conns</key>
-      <value>[[0,],]</value>
-    </param>
+    <key>variable</key>
     <param>
       <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
+      <value>use when header
+FEC is Repetition (x3)</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1184, 121)</value>
+      <value>(728, 467)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -256,46 +277,26 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_null_sink_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>num_inputs</key>
-      <value>1</value>
+      <value>preamble_rep</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>value</key>
+      <value>[0xe3, 0x8f, 0xc0, 0xfc, 0x7f, 0xc7, 0xe3, 0x81, 0xc0, 0xff, 
0x80, 0x38, 0xff, 0xf0, 0x38, 0xe0, 0x0f, 0xc0, 0x03, 0x80, 0x00, 0xff, 0xff, 
0xc0]</value>
     </param>
   </block>
   <block>
-    <key>blocks_null_sink</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>bus_conns</key>
-      <value>[[0,],]</value>
-    </param>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1184, 265)</value>
+      <value>(560, 579)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -303,46 +304,26 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_null_sink_0_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>num_inputs</key>
-      <value>1</value>
+      <value>preamble_select</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>value</key>
+      <value>{1: preamble_dummy, 3: preamble_rep}</value>
     </param>
   </block>
   <block>
-    <key>blocks_null_sink</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>bus_conns</key>
-      <value>[[0,],]</value>
-    </param>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(864, 329)</value>
+      <value>(560, 395)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -350,32 +331,20 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_null_sink_0_0_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>num_inputs</key>
-      <value>1</value>
+      <value>rxmod</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>value</key>
+      <value>digital.generic_mod(hdr_const, False, sps, True, eb, False, 
False)</value>
     </param>
   </block>
   <block>
-    <key>blocks_null_sink</key>
+    <key>blocks_multiply_by_tag_value_cc</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>bus_conns</key>
-      <value>[[0,],]</value>
-    </param>
-    <param>
       <key>comment</key>
       <value></value>
     </param>
@@ -389,7 +358,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(664, 273)</value>
+      <value>(384, 227)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -397,62 +366,19 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_null_sink_0_0_0_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>num_inputs</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_null_sink</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>bus_conns</key>
-      <value>[[0,],]</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(232, 145)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <value>blocks_multiply_by_tag_value_cc_0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>blocks_null_sink_0_0_0_1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>num_inputs</key>
-      <value>1</value>
+      <key>tagname</key>
+      <value>"amp_est"</value>
     </param>
     <param>
       <key>vlen</key>
@@ -460,16 +386,12 @@
     </param>
   </block>
   <block>
-    <key>blocks_null_sink</key>
+    <key>blocks_tagged_stream_multiply_length</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>bus_conns</key>
-      <value>[[0,],]</value>
-    </param>
-    <param>
       <key>comment</key>
       <value></value>
     </param>
@@ -483,7 +405,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(416, 441)</value>
+      <value>(1600, 345)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -491,72 +413,29 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_null_sink_0_0_0_1_0</value>
+      <value>blocks_tagged_stream_multiply_length_0</value>
     </param>
     <param>
       <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>num_inputs</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_tag_debug</key>
-    <param>
-      <key>alias</key>
-      <value></value>
+      <value>float</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>c</key>
+      <value>pld_const.bits_per_symbol()</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>lengthtagname</key>
+      <value>"payload symbols"</value>
     </param>
     <param>
-      <key>display</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_enabled</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(864, 427)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>blocks_tag_debug_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>filter</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value></value>
-    </param>
-    <param>
-      <key>num_inputs</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>vlen</key>
       <value>1</value>
     </param>
@@ -581,7 +460,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1016, 419)</value>
+      <value>(1136, 451)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -597,7 +476,7 @@
     </param>
     <param>
       <key>tag</key>
-      <value>"payload bits"</value>
+      <value>"payload symbols"</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -609,7 +488,7 @@
     </param>
   </block>
   <block>
-    <key>parameter</key>
+    <key>digital_constellation_soft_decoder_cf</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -619,12 +498,20 @@
       <value></value>
     </param>
     <param>
+      <key>constellation</key>
+      <value>pld_const</value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(192, 11)</value>
+      <value>(1368, 339)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -632,27 +519,19 @@
     </param>
     <param>
       <key>id</key>
-      <value>dec</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>FEC Decoder</value>
-    </param>
-    <param>
-      <key>short_id</key>
-      <value></value>
+      <value>digital_constellation_soft_decoder_cf_0</value>
     </param>
     <param>
-      <key>type</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>value</key>
-      <value> fec.dummy_decoder.make(8000)</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
   </block>
   <block>
-    <key>digital_constellation_decoder_cb</key>
+    <key>digital_constellation_soft_decoder_cf</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -671,11 +550,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1312, 195)</value>
+      <value>(1368, 219)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -683,7 +562,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>digital_constellation_decoder_cb_0</value>
+      <value>digital_constellation_soft_decoder_cf_0_0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -695,7 +574,7 @@
     </param>
   </block>
   <block>
-    <key>digital_constellation_soft_decoder_cf</key>
+    <key>digital_corr_est_cc</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -705,10 +584,6 @@
       <value></value>
     </param>
     <param>
-      <key>constellation</key>
-      <value>pld_const</value>
-    </param>
-    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -718,7 +593,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1440, 267)</value>
+      <value>(144, 227)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -726,7 +601,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>digital_constellation_soft_decoder_cf_0</value>
+      <value>digital_corr_est_cc_0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -736,9 +611,25 @@
       <key>minoutbuf</key>
       <value>0</value>
     </param>
+    <param>
+      <key>sps</key>
+      <value>sps</value>
+    </param>
+    <param>
+      <key>symbols</key>
+      <value>modulated_sync_word</value>
+    </param>
+    <param>
+      <key>mark_delay</key>
+      <value>mark_delay</value>
+    </param>
+    <param>
+      <key>threshold</key>
+      <value>0.999</value>
+    </param>
   </block>
   <block>
-    <key>digital_corr_est_cc</key>
+    <key>digital_costas_loop_cc</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -757,7 +648,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(152, 227)</value>
+      <value>(1160, 225)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -765,7 +656,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>digital_corr_est_cc_0</value>
+      <value>digital_costas_loop_cc_0_0</value>
+    </param>
+    <param>
+      <key>w</key>
+      <value>6.28/200.0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -776,20 +671,12 @@
       <value>0</value>
     </param>
     <param>
-      <key>sps</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>symbols</key>
-      <value>modulated_sync_word</value>
-    </param>
-    <param>
-      <key>mark_delay</key>
-      <value>mark_delay</value>
+      <key>order</key>
+      <value>hdr_const.arity()</value>
     </param>
     <param>
-      <key>threshold</key>
-      <value>0.9</value>
+      <key>use_snr</key>
+      <value>False</value>
     </param>
   </block>
   <block>
@@ -808,11 +695,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(656, 193)</value>
+      <value>(1144, 345)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -820,11 +707,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>digital_costas_loop_cc_0_0</value>
+      <value>digital_costas_loop_cc_0_0_0</value>
     </param>
     <param>
       <key>w</key>
-      <value>6.28/100.0</value>
+      <value>6.28/200.0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -836,7 +723,7 @@
     </param>
     <param>
       <key>order</key>
-      <value>hdr_const.arity()</value>
+      <value>pld_const.arity()</value>
     </param>
     <param>
       <key>use_snr</key>
@@ -863,7 +750,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1440, 419)</value>
+      <value>(1608, 451)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -906,7 +793,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(936, 179)</value>
+      <value>(888, 227)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -918,7 +805,7 @@
     </param>
     <param>
       <key>header_len</key>
-      <value>formatter.header_nbits()</value>
+      <value>(formatter.header_nbits() * int(1.0/hdr_dec.rate())) /  
hdr_const.bits_per_symbol()</value>
     </param>
     <param>
       <key>id</key>
@@ -934,7 +821,7 @@
     </param>
     <param>
       <key>length_tag_key</key>
-      <value>"payload bits"</value>
+      <value>"payload symbols"</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -966,7 +853,7 @@
     </param>
   </block>
   <block>
-    <key>digital_packet_parse_x</key>
+    <key>digital_packet_parse_b</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -989,15 +876,15 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1576, 187)</value>
+      <value>(1056, 123)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>0</value>
+      <value>180</value>
     </param>
     <param>
       <key>id</key>
-      <value>digital_packet_parse_x_0</value>
+      <value>digital_packet_parse_b_0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -1007,14 +894,6 @@
       <key>minoutbuf</key>
       <value>0</value>
     </param>
-    <param>
-      <key>threshold</key>
-      <value>3</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>b</value>
-    </param>
   </block>
   <block>
     <key>digital_pfb_clock_sync_xxx</key>
@@ -1040,7 +919,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(392, 187)</value>
+      <value>(592, 187)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1056,7 +935,7 @@
     </param>
     <param>
       <key>loop_bw</key>
-      <value>6.28/100.0</value>
+      <value>6.28/400.0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -1103,7 +982,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1224, 11)</value>
+      <value>(1408, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1146,7 +1025,7 @@
     </param>
     <param>
       <key>decoder</key>
-      <value>dec</value>
+      <value>pld_dec</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -1154,7 +1033,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1248, 411)</value>
+      <value>(1368, 443)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1166,7 +1045,7 @@
     </param>
     <param>
       <key>mtu</key>
-      <value>1500</value>
+      <value>1500*8</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -1186,6 +1065,57 @@
     </param>
   </block>
   <block>
+    <key>fec_generic_decoder</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>decoder</key>
+      <value>hdr_dec</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1352, 123)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>180</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>fec_generic_decoder_0</value>
+    </param>
+    <param>
+      <key>itype</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>otype</key>
+      <value>byte</value>
+    </param>
+  </block>
+  <block>
     <key>parameter</key>
     <param>
       <key>alias</key>
@@ -1201,7 +1131,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(736, 11)</value>
+      <value>(904, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1225,7 +1155,7 @@
     </param>
     <param>
       <key>value</key>
-      
<value>digital.packet_formatter_default(digital.packet_utils.default_access_code)</value>
+      
<value>digital.packet_formatter_default(digital.packet_utils.default_access_code,
 0)</value>
     </param>
   </block>
   <block>
@@ -1244,7 +1174,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(376, 11)</value>
+      <value>(544, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1272,7 +1202,11 @@
     </param>
   </block>
   <block>
-    <key>pad_sink</key>
+    <key>parameter</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
     <param>
       <key>comment</key>
       <value></value>
@@ -1283,7 +1217,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1616, 419)</value>
+      <value>(192, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1291,27 +1225,23 @@
     </param>
     <param>
       <key>id</key>
-      <value>pad_sink_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>message</value>
+      <value>hdr_dec</value>
     </param>
     <param>
       <key>label</key>
-      <value>pkt out</value>
+      <value>Header FEC Decoder</value>
     </param>
     <param>
-      <key>num_streams</key>
-      <value>1</value>
+      <key>short_id</key>
+      <value></value>
     </param>
     <param>
-      <key>optional</key>
-      <value>True</value>
+      <key>type</key>
+      <value></value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>value</key>
+      <value> fec.dummy_decoder.make(8000)</value>
     </param>
   </block>
   <block>
@@ -1326,7 +1256,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1440, 467)</value>
+      <value>(1768, 451)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1334,7 +1264,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>pad_sink_1</value>
+      <value>pad_sink_0</value>
     </param>
     <param>
       <key>type</key>
@@ -1342,7 +1272,7 @@
     </param>
     <param>
       <key>label</key>
-      <value>precrc</value>
+      <value>pkt out</value>
     </param>
     <param>
       <key>num_streams</key>
@@ -1369,7 +1299,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1184, 155)</value>
+      <value>(1608, 499)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1377,15 +1307,15 @@
     </param>
     <param>
       <key>id</key>
-      <value>pad_sink_2</value>
+      <value>pad_sink_1</value>
     </param>
     <param>
       <key>type</key>
-      <value>complex</value>
+      <value>message</value>
     </param>
     <param>
       <key>label</key>
-      <value>hdr_out</value>
+      <value>precrc</value>
     </param>
     <param>
       <key>num_streams</key>
@@ -1412,15 +1342,15 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1184, 299)</value>
+      <value>(976, 179)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>0</value>
+      <value>180</value>
     </param>
     <param>
       <key>id</key>
-      <value>pad_sink_3</value>
+      <value>pad_sink_2</value>
     </param>
     <param>
       <key>type</key>
@@ -1428,7 +1358,7 @@
     </param>
     <param>
       <key>label</key>
-      <value>pld_out</value>
+      <value>hdr_out</value>
     </param>
     <param>
       <key>num_streams</key>
@@ -1455,15 +1385,15 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(864, 363)</value>
+      <value>(968, 355)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>0</value>
+      <value>180</value>
     </param>
     <param>
       <key>id</key>
-      <value>pad_sink_4</value>
+      <value>pad_sink_3</value>
     </param>
     <param>
       <key>type</key>
@@ -1471,7 +1401,7 @@
     </param>
     <param>
       <key>label</key>
-      <value>phase</value>
+      <value>pld_out</value>
     </param>
     <param>
       <key>num_streams</key>
@@ -1498,7 +1428,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(664, 307)</value>
+      <value>(1368, 291)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1506,7 +1436,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>pad_sink_5</value>
+      <value>pad_sink_3_0</value>
     </param>
     <param>
       <key>type</key>
@@ -1514,7 +1444,7 @@
     </param>
     <param>
       <key>label</key>
-      <value>timing</value>
+      <value>pld_phs</value>
     </param>
     <param>
       <key>num_streams</key>
@@ -1541,7 +1471,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(216, 179)</value>
+      <value>(680, 139)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1549,7 +1479,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>pad_sink_6</value>
+      <value>pad_sink_5</value>
     </param>
     <param>
       <key>type</key>
@@ -1557,7 +1487,7 @@
     </param>
     <param>
       <key>label</key>
-      <value>corr out</value>
+      <value>timing</value>
     </param>
     <param>
       <key>num_streams</key>
@@ -1584,11 +1514,11 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(416, 475)</value>
+      <value>(224, 323)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>0</value>
+      <value>180</value>
     </param>
     <param>
       <key>id</key>
@@ -1674,7 +1604,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(552, 11)</value>
+      <value>(720, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1717,7 +1647,50 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1072, 11)</value>
+      <value>(368, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>pld_dec</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Payload FEC Decoder</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value></value>
+    </param>
+    <param>
+      <key>type</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value> fec.dummy_decoder.make(8000)</value>
+    </param>
+  </block>
+  <block>
+    <key>parameter</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1256, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1760,7 +1733,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(912, 11)</value>
+      <value>(1096, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1788,74 +1761,62 @@
     </param>
   </block>
   <connection>
-    <source_block_id>blocks_tagged_stream_to_pdu_0</source_block_id>
-    <sink_block_id>fec_async_decoder_0</sink_block_id>
-    <source_key>pdus</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_constellation_decoder_cb_0</source_block_id>
-    <sink_block_id>digital_packet_parse_x_0</sink_block_id>
+    <source_block_id>blocks_multiply_by_tag_value_cc_0</source_block_id>
+    <sink_block_id>digital_pfb_clock_sync_xxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_constellation_soft_decoder_cf_0</source_block_id>
+    <source_block_id>blocks_tagged_stream_multiply_length_0</source_block_id>
     <sink_block_id>blocks_tagged_stream_to_pdu_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_corr_est_cc_0</source_block_id>
-    <sink_block_id>blocks_null_sink_0_0_0_1_0</sink_block_id>
-    <source_key>1</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_corr_est_cc_0</source_block_id>
-    <sink_block_id>pad_sink_7</sink_block_id>
-    <source_key>1</source_key>
-    <sink_key>0</sink_key>
+    <source_block_id>blocks_tagged_stream_to_pdu_0</source_block_id>
+    <sink_block_id>fec_async_decoder_0</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_corr_est_cc_0</source_block_id>
-    <sink_block_id>blocks_null_sink_0_0_0_1</sink_block_id>
+    <source_block_id>digital_constellation_soft_decoder_cf_0</source_block_id>
+    <sink_block_id>blocks_tagged_stream_multiply_length_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_corr_est_cc_0</source_block_id>
-    <sink_block_id>digital_pfb_clock_sync_xxx_0</sink_block_id>
+    
<source_block_id>digital_constellation_soft_decoder_cf_0_0</source_block_id>
+    <sink_block_id>fec_generic_decoder_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>digital_corr_est_cc_0</source_block_id>
-    <sink_block_id>pad_sink_6</sink_block_id>
-    <source_key>0</source_key>
+    <sink_block_id>pad_sink_7</sink_block_id>
+    <source_key>1</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_costas_loop_cc_0_0</source_block_id>
-    <sink_block_id>blocks_null_sink_0_0_0</sink_block_id>
+    <source_block_id>digital_corr_est_cc_0</source_block_id>
+    <sink_block_id>blocks_multiply_by_tag_value_cc_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>digital_costas_loop_cc_0_0</source_block_id>
-    <sink_block_id>blocks_tag_debug_0</sink_block_id>
+    <sink_block_id>digital_constellation_soft_decoder_cf_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_costas_loop_cc_0_0</source_block_id>
-    <sink_block_id>digital_header_payload_demux_0</sink_block_id>
+    <source_block_id>digital_costas_loop_cc_0_0_0</source_block_id>
+    <sink_block_id>digital_constellation_soft_decoder_cf_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_costas_loop_cc_0_0</source_block_id>
-    <sink_block_id>pad_sink_4</sink_block_id>
+    <source_block_id>digital_costas_loop_cc_0_0_0</source_block_id>
+    <sink_block_id>pad_sink_3_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -1867,13 +1828,7 @@
   </connection>
   <connection>
     <source_block_id>digital_header_payload_demux_0</source_block_id>
-    <sink_block_id>blocks_null_sink_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_header_payload_demux_0</source_block_id>
-    <sink_block_id>digital_constellation_decoder_cb_0</sink_block_id>
+    <sink_block_id>digital_costas_loop_cc_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -1885,13 +1840,7 @@
   </connection>
   <connection>
     <source_block_id>digital_header_payload_demux_0</source_block_id>
-    <sink_block_id>blocks_null_sink_0_0</sink_block_id>
-    <source_key>1</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_header_payload_demux_0</source_block_id>
-    <sink_block_id>digital_constellation_soft_decoder_cf_0</sink_block_id>
+    <sink_block_id>digital_costas_loop_cc_0_0_0</sink_block_id>
     <source_key>1</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -1902,20 +1851,14 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_packet_parse_x_0</source_block_id>
+    <source_block_id>digital_packet_parse_b_0</source_block_id>
     <sink_block_id>digital_header_payload_demux_0</sink_block_id>
     <source_key>info</source_key>
     <sink_key>header_data</sink_key>
   </connection>
   <connection>
     <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
-    <sink_block_id>blocks_null_sink_0_0_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
-    <sink_block_id>digital_costas_loop_cc_0_0</sink_block_id>
+    <sink_block_id>digital_header_payload_demux_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -1938,6 +1881,12 @@
     <sink_key>in</sink_key>
   </connection>
   <connection>
+    <source_block_id>fec_generic_decoder_0</source_block_id>
+    <sink_block_id>digital_packet_parse_b_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
     <source_block_id>pad_source_0</source_block_id>
     <sink_block_id>digital_corr_est_cc_0</sink_block_id>
     <source_key>0</source_key>
diff --git a/gr-digital/examples/packet/packet_tx.grc 
b/gr-digital/examples/packet/packet_tx.grc
index a03df91..08fd9ea 100644
--- a/gr-digital/examples/packet/packet_tx.grc
+++ b/gr-digital/examples/packet/packet_tx.grc
@@ -89,11 +89,38 @@
     </param>
     <param>
       <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(784, 435)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>filt_delay</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>1+(taps_per_filt-1)/2</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(680, 435)</value>
+      <value>(1240, 91)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -109,6 +136,33 @@
     </param>
   </block>
   <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(688, 435)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>taps_per_filt</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>len(psf_taps)/nfilts</value>
+    </param>
+  </block>
+  <block>
     <key>blocks_pdu_to_tagged_stream</key>
     <param>
       <key>alias</key>
@@ -128,7 +182,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(320, 251)</value>
+      <value>(536, 251)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -175,7 +229,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(320, 179)</value>
+      <value>(536, 179)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -234,7 +288,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(544, 171)</value>
+      <value>(760, 171)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -293,7 +347,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(544, 243)</value>
+      <value>(760, 243)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -336,11 +390,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(936, 369)</value>
+      <value>(952, 369)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -438,7 +492,7 @@
     <key>digital_burst_shaper_xx</key>
     <param>
       <key>alias</key>
-      <value></value>
+      <value>burst_shaper0</value>
     </param>
     <param>
       <key>comment</key>
@@ -450,7 +504,7 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -482,11 +536,11 @@
     </param>
     <param>
       <key>post_padding</key>
-      <value>20</value>
+      <value>filt_delay</value>
     </param>
     <param>
       <key>pre_padding</key>
-      <value>20</value>
+      <value>0</value>
     </param>
     <param>
       <key>type</key>
@@ -521,7 +575,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(872, 171)</value>
+      <value>(1088, 171)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -580,7 +634,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(872, 243)</value>
+      <value>(1088, 243)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -678,7 +732,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(744, 179)</value>
+      <value>(960, 179)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -721,7 +775,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(744, 251)</value>
+      <value>(960, 251)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -768,7 +822,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(64, 201)</value>
+      <value>(64, 225)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -788,7 +842,7 @@
     </param>
   </block>
   <block>
-    <key>parameter</key>
+    <key>fec_async_encoder</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -798,36 +852,52 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
+      <key>encoder</key>
+      <value>pld_enc</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(192, 11)</value>
+      <value>(64, 99)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>0</value>
+      <value>180</value>
     </param>
     <param>
       <key>id</key>
-      <value>enc</value>
+      <value>fec_async_encoder_0</value>
     </param>
     <param>
-      <key>label</key>
-      <value>FEC encoder</value>
+      <key>mtu</key>
+      <value>1500</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>value</key>
-      <value> fec.dummy_encoder_make(8000)</value>
+      <key>packed</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>rev_pack</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>rev_unpack</key>
+      <value>False</value>
     </param>
   </block>
   <block>
@@ -846,23 +916,23 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>encoder</key>
-      <value>enc</value>
+      <value>hdr_enc</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(64, 99)</value>
+      <value>(304, 171)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
     <param>
       <key>id</key>
-      <value>fec_async_encoder_0</value>
+      <value>fec_async_encoder_0_0</value>
     </param>
     <param>
       <key>mtu</key>
@@ -905,7 +975,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(728, 11)</value>
+      <value>(904, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -929,7 +999,7 @@
     </param>
     <param>
       <key>value</key>
-      
<value>digital.packet_formatter_default(digital.packet_utils.default_access_code)</value>
+      
<value>digital.packet_formatter_default(digital.packet_utils.default_access_code,
 0)</value>
     </param>
   </block>
   <block>
@@ -948,7 +1018,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(376, 11)</value>
+      <value>(552, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -976,6 +1046,49 @@
     </param>
   </block>
   <block>
+    <key>parameter</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(192, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>hdr_enc</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Header FEC encoder</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value></value>
+    </param>
+    <param>
+      <key>type</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value> fec.dummy_encoder_make(8000)</value>
+    </param>
+  </block>
+  <block>
     <key>virtual_sink</key>
     <param>
       <key>comment</key>
@@ -987,7 +1100,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1080, 179)</value>
+      <value>(1272, 179)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1014,7 +1127,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1080, 251)</value>
+      <value>(1272, 251)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1041,7 +1154,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1224, 379)</value>
+      <value>(1240, 379)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1073,6 +1186,135 @@
     </param>
   </block>
   <block>
+    <key>pad_sink</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(144, 163)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>180</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>pad_sink_1</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>message</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>postcrc</value>
+    </param>
+    <param>
+      <key>num_streams</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>optional</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>pad_sink</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(368, 507)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>pad_sink_2</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>mux</value>
+    </param>
+    <param>
+      <key>num_streams</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>optional</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
+    <key>pad_sink</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(504, 507)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>pad_sink_3</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>burst</value>
+    </param>
+    <param>
+      <key>num_streams</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>optional</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
+  </block>
+  <block>
     <key>pad_source</key>
     <param>
       <key>comment</key>
@@ -1131,11 +1373,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(680, 339)</value>
+      <value>(688, 339)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1163,7 +1405,7 @@
     </param>
     <param>
       <key>samp_delay</key>
-      <value>0</value>
+      <value>filt_delay</value>
     </param>
     <param>
       <key>atten</key>
@@ -1194,7 +1436,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(552, 11)</value>
+      <value>(728, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1237,7 +1479,50 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1064, 11)</value>
+      <value>(368, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>pld_enc</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Payload FEC encoder</value>
+    </param>
+    <param>
+      <key>short_id</key>
+      <value></value>
+    </param>
+    <param>
+      <key>type</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value> fec.dummy_encoder_make(8000)</value>
+    </param>
+  </block>
+  <block>
+    <key>parameter</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1240, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1334,7 +1619,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(904, 11)</value>
+      <value>(1080, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1398,6 +1683,18 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
+    <source_block_id>blocks_tagged_stream_mux_0</source_block_id>
+    <sink_block_id>pad_sink_2</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>digital_burst_shaper_xx_0</source_block_id>
+    <sink_block_id>pad_sink_3</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
+  </connection>
+  <connection>
     <source_block_id>digital_burst_shaper_xx_0</source_block_id>
     <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
     <source_key>0</source_key>
@@ -1422,6 +1719,12 @@
     <sink_key>in</sink_key>
   </connection>
   <connection>
+    <source_block_id>digital_crc32_async_bb_1</source_block_id>
+    <sink_block_id>pad_sink_1</sink_block_id>
+    <source_key>out</source_key>
+    <sink_key>in</sink_key>
+  </connection>
+  <connection>
     <source_block_id>digital_map_bb_1</source_block_id>
     <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
     <source_key>0</source_key>
@@ -1435,9 +1738,9 @@
   </connection>
   <connection>
     <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
+    <sink_block_id>fec_async_encoder_0_0</sink_block_id>
     <source_key>header</source_key>
-    <sink_key>pdus</sink_key>
+    <sink_key>in</sink_key>
   </connection>
   <connection>
     <source_block_id>digital_packet_format_async_1</source_block_id>
@@ -1452,6 +1755,12 @@
     <sink_key>in</sink_key>
   </connection>
   <connection>
+    <source_block_id>fec_async_encoder_0_0</source_block_id>
+    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
+    <source_key>out</source_key>
+    <sink_key>pdus</sink_key>
+  </connection>
+  <connection>
     <source_block_id>pad_source_0</source_block_id>
     <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
     <source_key>out</source_key>
diff --git a/gr-digital/examples/packet/parse_packet_header.grc 
b/gr-digital/examples/packet/parse_packet_header.grc
deleted file mode 100644
index f37c69f..0000000
--- a/gr-digital/examples/packet/parse_packet_header.grc
+++ /dev/null
@@ -1,5483 +0,0 @@
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-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(488, 875)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>0,0,1,1</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>noise</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Noise Amp</value>
-    </param>
-    <param>
-      <key>min_len</key>
-      <value>200</value>
-    </param>
-    <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
-    </param>
-    <param>
-      <key>start</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>step</key>
-      <value>0.001</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>5</value>
-    </param>
-    <param>
-      <key>rangeType</key>
-      <value>float</value>
-    </param>
-    <param>
-      <key>widget</key>
-      <value>counter_slider</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1320, 1059)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>polys</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>[109, 79]</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1432, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>preamble</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>[0xac, 0xdd, 0xa4, 0xe2, 0xf2, 0x8c, 0x20, 0xfc]</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1344, 995)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>rate</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>2</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1248, 1059)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>rep</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>3</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_rrc_filter_taps</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>alpha</key>
-      <value>eb</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1296, 131)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>gain</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>rx_rrc_taps</value>
-    </param>
-    <param>
-      <key>ntaps</key>
-      <value>5*sps*nfilts</value>
-    </param>
-    <param>
-      <key>samp_rate</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>sym_rate</key>
-      <value>1.0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1432, 67)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>rxmod</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>digital.generic_mod(Const_HDR, False, sps, True, eb, False, 
False)</value>
-    </param>
-  </block>
-  <block>
-    <key>variable</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1064, 67)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>2</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(712, 875)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>0,2,1,1</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>time_offset</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Time Offset</value>
-    </param>
-    <param>
-      <key>min_len</key>
-      <value>200</value>
-    </param>
-    <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
-    </param>
-    <param>
-      <key>start</key>
-      <value>0.99</value>
-    </param>
-    <param>
-      <key>step</key>
-      <value>0.00001</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>1.01</value>
-    </param>
-    <param>
-      <key>rangeType</key>
-      <value>float</value>
-    </param>
-    <param>
-      <key>widget</key>
-      <value>counter_slider</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_rrc_filter_taps</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>alpha</key>
-      <value>eb</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1296, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>gain</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>tx_rrc_taps</value>
-    </param>
-    <param>
-      <key>ntaps</key>
-      <value>5*sps*nfilts</value>
-    </param>
-    <param>
-      <key>samp_rate</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>sym_rate</key>
-      <value>1.0</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_message_debug</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1184, 585)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_message_debug_0_0_0</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_message_strobe</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(24, 83)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_message_strobe_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>msg</key>
-      <value>pmt.intern("TEST")</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>period</key>
-      <value>1000</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(336, 283)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(336, 211)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_random_pdu</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>mask</key>
-      <value>0xFF</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(208, 67)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_random_pdu_0</value>
-    </param>
-    <param>
-      <key>length_modulo</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>maxsize</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minsize</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
-    <param>
-      <key>k</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>l</key>
-      <value>Const_HDR.bits_per_symbol()</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(560, 203)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
-    </param>
-    <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>align_output</key>
-      <value>False</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
-    <param>
-      <key>k</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>l</key>
-      <value>Const_PLD.bits_per_symbol()</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(560, 275)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
-    </param>
-    <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>align_output</key>
-      <value>False</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_tag_debug</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>display</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(520, 667)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_tag_debug_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>filter</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value></value>
-    </param>
-    <param>
-      <key>num_inputs</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_multiply_length</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(936, 417)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_multiply_length_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>c</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_mux</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(216, 401)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_mux_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>ninputs</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>tag_preserve_head_pos</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1216, 523)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>chan_data</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Chan Data</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(48, 571)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>chan_rx_data</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Chan Data</value>
-    </param>
-  </block>
-  <block>
-    <key>channels_channel_model</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>block_tags</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>epsilon</key>
-      <value>time_offset</value>
-    </param>
-    <param>
-      <key>freq_offset</key>
-      <value>freq_offset</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1224, 395)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>channels_channel_model_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>noise_voltage</key>
-      <value>noise</value>
-    </param>
-    <param>
-      <key>seed</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>1.0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_burst_shaper_xx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(448, 379)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_burst_shaper_xx_0</value>
-    </param>
-    <param>
-      <key>insert_phasing</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>length_tag_name</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>post_padding</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>pre_padding</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>window</key>
-      <value>firdes.window(firdes.WIN_HANN, 20, 0)</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>dimension</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 203)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0</value>
-    </param>
-    <param>
-      <key>in_type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>num_ports</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>out_type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>symbol_table</key>
-      <value>Const_HDR.points()</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>dimension</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 275)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0_0</value>
-    </param>
-    <param>
-      <key>in_type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>num_ports</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>out_type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>symbol_table</key>
-      <value>Const_PLD.points()</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_constellation_decoder_cb</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>constellation</key>
-      <value>Const_HDR</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(728, 579)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_constellation_decoder_cb_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_corr_est_cc</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(48, 619)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_corr_est_cc_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>sps</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>symbols</key>
-      <value>modulated_sync_word</value>
-    </param>
-    <param>
-      <key>mark_delay</key>
-      <value>mark_delay</value>
-    </param>
-    <param>
-      <key>threshold</key>
-      <value>0.9</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_costas_loop_cc</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(512, 585)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_costas_loop_cc_0_0</value>
-    </param>
-    <param>
-      <key>w</key>
-      <value>6.28/100.0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>order</key>
-      <value>Const_HDR.arity()</value>
-    </param>
-    <param>
-      <key>use_snr</key>
-      <value>False</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_crc32_async_bb</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(424, 91)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_crc32_async_bb_1</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>check</key>
-      <value>False</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(760, 211)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_map_bb_1</value>
-    </param>
-    <param>
-      <key>map</key>
-      <value>Const_HDR.pre_diff_code()</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(760, 283)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_map_bb_1_0</value>
-    </param>
-    <param>
-      <key>map</key>
-      <value>Const_PLD.pre_diff_code()</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_packet_format_async</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>formatter</key>
-      <value>formatter</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(80, 232)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_packet_format_async_1</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_packet_parse_x</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>formatter</key>
-      <value>formatter</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(952, 571)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_packet_parse_x_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>threshold</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>b</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_pfb_clock_sync_xxx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>filter_size</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(280, 579)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_pfb_clock_sync_xxx_0</value>
-    </param>
-    <param>
-      <key>init_phase</key>
-      <value>nfilts/2</value>
-    </param>
-    <param>
-      <key>loop_bw</key>
-      <value>6.28/100.0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>max_dev</key>
-      <value>1.5</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>osps</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>sps</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>rx_rrc_taps</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>ccf</value>
-    </param>
-  </block>
-  <block>
-    <key>fec_async_encoder</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>encoder</key>
-      <value>enc</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(80, 171)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>fec_async_encoder_0</value>
-    </param>
-    <param>
-      <key>mtu</key>
-      <value>1500</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>packed</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>rev_pack</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>rev_unpack</key>
-      <value>False</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1120, 211)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>mod_header</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1120, 283)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>mod_payload</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
-    </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(680, 387)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>rrate</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>samp_delay</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>atten</key>
-      <value>100</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>tx_rrc_taps</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>ccf</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1480, 515)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>xmax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>xmin</key>
-      <value>-2</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(728, 787)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0_0_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>800</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>xmax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>xmin</key>
-      <value>-2</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>average</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>bw</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>fc</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>fftsize</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1480, 435)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>showports</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>freqhalf</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Relative Gain</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>10</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-140</value>
-    </param>
-    <param>
-      <key>units</key>
-      <value>dB</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>average</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>bw</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>fc</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>fftsize</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(728, 707)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>showports</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>freqhalf</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Relative Gain</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>10</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-140</value>
-    </param>
-    <param>
-      <key>units</key>
-      <value>dB</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1480, 355)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>2500</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_delay</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
-    </param>
-    <param>
-      <key>yunit</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(728, 627)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1_0_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>1250</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_delay</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
-    </param>
-    <param>
-      <key>yunit</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(48, 715)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>1,0,1,1</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1_0_0_0</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>1250</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_delay</key>
-      <value>50</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>ylabel</key>
-      <value>Correlation</value>
-    </param>
-    <param>
-      <key>yunit</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>150</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-150</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(16, 379)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>rx_mod_header</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(16, 427)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>rx_mod_payload</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_tab_widget</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(488, 1003)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>1,1,1,1</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>tab0</value>
-    </param>
-    <param>
-      <key>label0</key>
-      <value>Time</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value>Freq.</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value>Tab 10</value>
-    </param>
-    <param>
-      <key>label11</key>
-      <value>Tab 11</value>
-    </param>
-    <param>
-      <key>label12</key>
-      <value>Tab 12</value>
-    </param>
-    <param>
-      <key>label13</key>
-      <value>Tab 13</value>
-    </param>
-    <param>
-      <key>label14</key>
-      <value>Tab 14</value>
-    </param>
-    <param>
-      <key>label15</key>
-      <value>Tab 15</value>
-    </param>
-    <param>
-      <key>label16</key>
-      <value>Tab 16</value>
-    </param>
-    <param>
-      <key>label17</key>
-      <value>Tab 17</value>
-    </param>
-    <param>
-      <key>label18</key>
-      <value>Tab 18</value>
-    </param>
-    <param>
-      <key>label19</key>
-      <value>Tab 19</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value>Const.</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value>Tab 3</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value>Tab 4</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value>Tab 5</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value>Tab 6</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value>Tab 7</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value>Tab 8</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value>Tab 9</value>
-    </param>
-    <param>
-      <key>num_tabs</key>
-      <value>3</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_tab_widget</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
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-      <key>_coordinate</key>
-      <value>(624, 1003)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>1,2,1,1</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
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-      <key>id</key>
-      <value>tab1</value>
-    </param>
-    <param>
-      <key>label0</key>
-      <value>Time</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value>Freq.</value>
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-    <param>
-      <key>label10</key>
-      <value>Tab 10</value>
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-    <param>
-      <key>label11</key>
-      <value>Tab 11</value>
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-    <param>
-      <key>label12</key>
-      <value>Tab 12</value>
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-    <param>
-      <key>label13</key>
-      <value>Tab 13</value>
-    </param>
-    <param>
-      <key>label14</key>
-      <value>Tab 14</value>
-    </param>
-    <param>
-      <key>label15</key>
-      <value>Tab 15</value>
-    </param>
-    <param>
-      <key>label16</key>
-      <value>Tab 16</value>
-    </param>
-    <param>
-      <key>label17</key>
-      <value>Tab 17</value>
-    </param>
-    <param>
-      <key>label18</key>
-      <value>Tab 18</value>
-    </param>
-    <param>
-      <key>label19</key>
-      <value>Tab 19</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value>Const.</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value>Tab 3</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value>Tab 4</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value>Tab 5</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value>Tab 6</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value>Tab 7</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value>Tab 8</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value>Tab 9</value>
-    </param>
-    <param>
-      <key>num_tabs</key>
-      <value>3</value>
-    </param>
-  </block>
-  <connection>
-    <source_block_id>blocks_message_strobe_0</source_block_id>
-    <sink_block_id>blocks_random_pdu_0</sink_block_id>
-    <source_key>strobe</source_key>
-    <sink_key>generate</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_random_pdu_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
-    <source_key>pdus</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>digital_map_bb_1</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>digital_map_bb_1_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_tagged_stream_multiply_length_0</source_block_id>
-    <sink_block_id>channels_channel_model_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_tagged_stream_mux_0</source_block_id>
-    <sink_block_id>digital_burst_shaper_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>chan_rx_data</source_block_id>
-    <sink_block_id>digital_corr_est_cc_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>chan_data</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_burst_shaper_xx_0</source_block_id>
-    <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0</source_block_id>
-    <sink_block_id>mod_header</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0_0</source_block_id>
-    <sink_block_id>mod_payload</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_constellation_decoder_cb_0</source_block_id>
-    <sink_block_id>digital_packet_parse_x_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_corr_est_cc_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1_0_0_0</sink_block_id>
-    <source_key>1</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_corr_est_cc_0</source_block_id>
-    <sink_block_id>digital_pfb_clock_sync_xxx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_costas_loop_cc_0_0</source_block_id>
-    <sink_block_id>digital_constellation_decoder_cb_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_costas_loop_cc_0_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_costas_loop_cc_0_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_costas_loop_cc_0_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_crc32_async_bb_1</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_map_bb_1</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_map_bb_1_0</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
-    <source_key>header</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
-    <source_key>payload</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_parse_x_0</source_block_id>
-    <sink_block_id>blocks_message_debug_0_0_0</sink_block_id>
-    <source_key>info</source_key>
-    <sink_key>print</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
-    <sink_block_id>blocks_tag_debug_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
-    <sink_block_id>digital_costas_loop_cc_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>fec_async_encoder_0</source_block_id>
-    <sink_block_id>digital_packet_format_async_1</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>blocks_tagged_stream_multiply_length_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>rx_mod_header</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>rx_mod_payload</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>1</sink_key>
-  </connection>
-</flow_graph>
diff --git a/gr-digital/examples/packet/transmitter_sim.grc 
b/gr-digital/examples/packet/simple_bpsk_tx.grc
similarity index 72%
copy from gr-digital/examples/packet/transmitter_sim.grc
copy to gr-digital/examples/packet/simple_bpsk_tx.grc
index 8917396..3a2dd3d 100644
--- a/gr-digital/examples/packet/transmitter_sim.grc
+++ b/gr-digital/examples/packet/simple_bpsk_tx.grc
@@ -1,23 +1,23 @@
-<?xml version='1.0' encoding='ASCII'?>
-<?grc format='1' created='3.7.8'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.10'?>
 <flow_graph>
-  <timestamp>Thu Dec  4 14:34:25 2014</timestamp>
+  <timestamp>Thu Apr  7 13:34:29 2016</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>parse_packet_header_soft</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>window_size</key>
+      <value></value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
+      <key>category</key>
+      <value>Custom</value>
     </param>
     <param>
-      <key>author</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -25,764 +25,769 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>2000,2000</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_coordinate</key>
+      <value>(8, 8)</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>simple_bpsk_tx</value>
     </param>
     <param>
       <key>max_nouts</key>
       <value>0</value>
     </param>
     <param>
-      <key>realtime_scheduling</key>
+      <key>qt_qss_theme</key>
       <value></value>
     </param>
     <param>
-      <key>thread_safe_setters</key>
+      <key>realtime_scheduling</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(8, 11)</value>
+      <key>run</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>thread_safe_setters</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>rate</value>
+      <key>title</key>
+      <value></value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>value</key>
-      <value>2</value>
+      <value>0.7</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(136, 547)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1312, 819)</value>
+      <key>gui_hint</key>
+      <value>1,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>k</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>7</value>
+      <value>amp</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>label</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1240, 819)</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>start</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>rep</value>
+      <key>step</key>
+      <value>0.005</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>stop</key>
+      <value>0.9</value>
     </param>
     <param>
-      <key>value</key>
-      <value>3</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1216, 883)</value>
+      <value>(80, 75)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>polys</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>eb</value>
     </param>
     <param>
       <key>value</key>
-      <value>[109, 79]</value>
+      <value>0.22</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>value</key>
+      <value>483e6-300</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1288, 883)</value>
+      <value>(136, 419)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>0,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>eb</value>
+      <value>freq</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Frequency</value>
     </param>
     <param>
-      <key>value</key>
-      <value>0.22</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>start</key>
+      <value>50e6</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1216, 67)</value>
+      <key>step</key>
+      <value>500e3</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>stop</key>
+      <value>3e9</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>nfilts</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>value</key>
-      <value>32</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>value</key>
+      <value>56</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1144, 67)</value>
+      <value>(8, 547)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1,0,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>sps</value>
+      <value>gain</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Gain</value>
     </param>
     <param>
-      <key>value</key>
-      <value>2</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1072, 67)</value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>stop</key>
+      <value>83</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>virtual_source</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>rx_mod_header</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>_coordinate</key>
+      <value>(496, 11)</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(16, 379)</value>
+      <key>id</key>
+      <value>pkt_len</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>value</key>
+      <value>1000</value>
     </param>
   </block>
   <block>
-    <key>virtual_source</key>
+    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>id</key>
-      <value>rx_mod_payload</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha</key>
+      <value>eb</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(16, 427)</value>
+      <value>(960, 531)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_mux</key>
+    <param>
+      <key>gain</key>
+      <value>1</value>
+    </param>
     <param>
       <key>id</key>
-      <value>blocks_tagged_stream_mux_0</value>
+      <value>rx_rrc_taps</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ntaps</key>
+      <value>15*sps</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>samp_rate</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>ninputs</key>
-      <value>2</value>
+      <key>sym_rate</key>
+      <value>1.0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>value</key>
+      <value>200e3</value>
     </param>
     <param>
-      <key>tag_preserve_head_pos</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(8, 419)</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>gui_hint</key>
+      <value>0,0,1,1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>id</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>label</key>
+      <value>Sample Rate</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(216, 400)</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_message_strobe</key>
     <param>
-      <key>id</key>
-      <value>blocks_message_strobe_0</value>
+      <key>start</key>
+      <value>200e3</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>step</key>
+      <value>200e3</value>
     </param>
     <param>
-      <key>msg</key>
-      <value>pmt.intern("TEST")</value>
+      <key>stop</key>
+      <value>10e6</value>
     </param>
     <param>
-      <key>period</key>
-      <value>100</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(8, 75)</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(24, 83)</value>
+      <key>id</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>value</key>
+      <value>2</value>
     </param>
   </block>
   <block>
-    <key>fec_async_encoder</key>
+    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>id</key>
-      <value>fec_async_encoder_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>encoder</key>
-      <value>enc</value>
+      <key>alpha</key>
+      <value>eb</value>
     </param>
     <param>
-      <key>packed</key>
-      <value>True</value>
+      <key>_coordinate</key>
+      <value>(184, 11)</value>
     </param>
     <param>
-      <key>rev_unpack</key>
-      <value>False</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rev_pack</key>
-      <value>False</value>
+      <key>gain</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>id</key>
+      <value>tx_rrc_taps</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>ntaps</key>
+      <value>15*sps</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>samp_rate</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>sym_rate</key>
+      <value>1.0</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_message_debug</key>
+    <param>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(80, 171)</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
-  </block>
-  <block>
-    <key>digital_crc32_async_bb</key>
     <param>
-      <key>id</key>
-      <value>digital_crc32_async_bb_1</value>
+      <key>_coordinate</key>
+      <value>(440, 113)</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>check</key>
-      <value>False</value>
+      <key>id</key>
+      <value>blocks_message_debug_0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_message_strobe</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(424, 91)</value>
+      <value>(16, 163)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_random_pdu</key>
     <param>
       <key>id</key>
-      <value>blocks_random_pdu_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>blocks_message_strobe_0</value>
     </param>
     <param>
-      <key>minsize</key>
-      <value>50</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>maxsize</key>
-      <value>100</value>
+      <key>msg</key>
+      <value>pmt.intern("TEST")</value>
     </param>
     <param>
-      <key>mask</key>
-      <value>0xFF</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>length_modulo</key>
-      <value>2</value>
+      <key>period</key>
+      <value>4000</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_multiply_const_vxx</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>const</key>
+      <value>amp</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(208, 67)</value>
+      <value>(1344, 467)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
+      <value>blocks_multiply_const_vxx_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_pdu_to_tagged_stream</key>
     <param>
-      <key>dim2</key>
-      <value>4</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>_coordinate</key>
+      <value>(440, 219)</value>
     </param>
     <param>
-      <key>state_start</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>state_end</key>
-      <value>-1</value>
+      <key>id</key>
+      <value>blocks_pdu_to_tagged_stream_0</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_random_pdu</key>
+    <param>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1384, 779)</value>
+      <key>mask</key>
+      <value>0x0F</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_decoder_def</key>
     <param>
-      <key>id</key>
-      <value>dec</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
+      <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>_coordinate</key>
+      <value>(200, 147)</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>id</key>
+      <value>blocks_random_pdu_0</value>
     </param>
     <param>
-      <key>dim2</key>
+      <key>length_modulo</key>
       <value>1</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>maxsize</key>
+      <value>6</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>prob</key>
-      <value>0.5</value>
+      <key>minsize</key>
+      <value>6</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
-    <param>
-      <key>comment</key>
+  </block>
+  <block>
+    <key>blocks_tag_debug</key>
+    <param>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1184, 699)</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc</value>
+      <key>display</key>
+      <value>True</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>ndim</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(1600, 595)</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>id</key>
+      <value>blocks_tag_debug_0</value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>filter</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>name</key>
+      <value></value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>num_inputs</key>
+      <value>1</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_tagged_stream_multiply_length</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -792,40 +797,52 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1384, 603)</value>
+      <value>(616, 321)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc</value>
+      <value>blocks_tagged_stream_multiply_length_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>c</key>
+      <value>sps*8</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>lengthtagname</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_unpack_k_bits_bb</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -835,91 +852,99 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(992, 603)</value>
+      <value>(48, 315)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
+      <value>blocks_unpack_k_bits_bb_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>k</key>
+      <value>8</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>dimension</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(992, 683)</value>
+      <value>(216, 307)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc</value>
+      <value>digital_chunks_to_symbols_xx_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>in_type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
+      <key>num_ports</key>
       <value>1</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>out_type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>symbol_table</key>
+      <value>[-1,1]</value>
     </param>
+  </block>
+  <block>
+    <key>fir_filter_xxx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -929,60 +954,52 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1184, 603)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>noise</value>
+      <key>decim</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Noise Amp</value>
+      <value>2</value>
     </param>
     <param>
-      <key>value</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(952, 459)</value>
     </param>
     <param>
-      <key>start</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>0.5</value>
+      <key>id</key>
+      <value>fir_filter_xxx_0</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>samp_delay</key>
+      <value>1 + (len(rx_rrc_taps)-1)/2</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>taps</key>
+      <value>rx_rrc_taps</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,0,1,1</value>
+      <key>type</key>
+      <value>ccc</value>
     </param>
+  </block>
+  <block>
+    <key>interp_fir_filter_xxx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -992,705 +1009,693 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(40, 627)</value>
+      <value>(408, 307)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
       <key>id</key>
-      <value>freq_offset</value>
+      <value>interp_fir_filter_xxx_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Freq. Offset</value>
+      <key>interp</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>value</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>-1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>1</value>
+      <key>samp_delay</key>
+      <value>(len(tx_rrc_taps)-1)/(2*sps)</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>taps</key>
+      <value>tx_rrc_taps</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>type</key>
+      <value>ccc</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_const_sink_x</key>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,1,1,1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(152, 627)</value>
+      <value>(1600, 531)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0_0</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>id</key>
+      <value>qtgui_const_sink_x_0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker1</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style1</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(336, 211)</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color10</key>
+      <value>"red"</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>style10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>color2</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker2</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style2</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(336, 283)</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>color3</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker3</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
-      <key>id</key>
-      <value>digital_map_bb_1_0</value>
+      <key>style3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_PLD.pre_diff_code()</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color4</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker4</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style4</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(760, 283)</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
+      <key>color5</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>marker5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_PLD.bits_per_symbol()</value>
+      <key>style5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>color6</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>marker6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>style6</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(560, 275)</value>
+      <key>color7</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>label7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker7</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
-      <key>id</key>
-      <value>digital_map_bb_1</value>
+      <key>style7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_HDR.pre_diff_code()</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color8</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker8</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style8</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>width8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha9</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color9</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 211)</value>
+      <key>marker9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style9</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_HDR.bits_per_symbol()</value>
+      <key>size</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>tr_tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>xmax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(560, 203)</value>
+      <key>xmin</key>
+      <value>-2</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>ymax</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
   </block>
   <block>
-    <key>digital_packet_format_async</key>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>digital_packet_format_async_1</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>formatter</key>
-      <value>formatter</value>
+      <key>bw</key>
+      <value>1</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>fc</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(80, 232)</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0_0</value>
+      <key>_coordinate</key>
+      <value>(1600, 451)</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_PLD.points()</value>
+      <key>id</key>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>dimension</key>
-      <value>1</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>num_ports</key>
-      <value>1</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 275)</value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>label10</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>id</key>
-      <value>mod_header</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1120, 211)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
-    <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_HDR.points()</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>dimension</key>
-      <value>1</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>num_ports</key>
-      <value>1</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 203)</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>id</key>
-      <value>mod_payload</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1120, 283)</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>label7</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_packet_formatter_default</key>
     <param>
-      <key>id</key>
-      <value>formatter</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>access_code</key>
-      <value>0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1072, 3)</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
-      <key>id</key>
-      <value>Const_PLD</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_4()[1]</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_4()[0]</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rot_sym</key>
-      <value>4</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>dims</key>
+      <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
+      <key>showports</key>
+      <value>True</value>
     </param>
     <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>freqhalf</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 3)</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
-      <key>id</key>
-      <value>Const_PLD</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
+      <key>label</key>
+      <value>Relative Gain</value>
     </param>
     <param>
-      <key>rot_sym</key>
-      <value>2</value>
+      <key>ymax</key>
+      <value>10</value>
     </param>
     <param>
-      <key>dims</key>
-      <value>1</value>
+      <key>ymin</key>
+      <value>-140</value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
+      <key>units</key>
+      <value>dB</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
       <key>alias</key>
@@ -1701,1597 +1706,1365 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(736, 3)</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
-      <key>id</key>
-      <value>Const_HDR</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
+      <key>_coordinate</key>
+      <value>(1600, 371)</value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
-      <key>rot_sym</key>
-      <value>2</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(576, 3)</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_rrc_filter_taps</key>
-    <param>
       <key>id</key>
-      <value>tx_rrc_taps</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gain</key>
-      <value>nfilts</value>
+      <value>qtgui_time_sink_x_1</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>nfilts</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>sym_rate</key>
+      <key>alpha1</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>alpha</key>
-      <value>eb</value>
-    </param>
-    <param>
-      <key>ntaps</key>
-      <value>5*sps*nfilts</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1304, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
-    <param>
-      <key>id</key>
-      <value>time_offset</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>style1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Time Offset</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
+      <key>alpha10</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>0.99</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>1.01</value>
-    </param>
-    <param>
-      <key>step</key>
-      <value>0.0001</value>
-    </param>
-    <param>
-      <key>widget</key>
-      <value>counter_slider</value>
-    </param>
-    <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
-    </param>
-    <param>
-      <key>min_len</key>
-      <value>200</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>1,0,1,1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(264, 627)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_tab_widget</key>
-    <param>
-      <key>id</key>
-      <value>tab0</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>num_tabs</key>
-      <value>2</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label0</key>
-      <value>Freq.</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>label1</key>
-      <value>Const.</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
       <key>label2</key>
-      <value>Tab 2</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value>Tab 3</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value>Tab 4</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value>Tab 5</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value>Tab 6</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value>Tab 7</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value>Tab 8</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value>Tab 9</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value>Tab 10</value>
-    </param>
-    <param>
-      <key>label11</key>
-      <value>Tab 11</value>
-    </param>
-    <param>
-      <key>label12</key>
-      <value>Tab 12</value>
-    </param>
-    <param>
-      <key>label13</key>
-      <value>Tab 13</value>
-    </param>
-    <param>
-      <key>label14</key>
-      <value>Tab 14</value>
-    </param>
-    <param>
-      <key>label15</key>
-      <value>Tab 15</value>
-    </param>
-    <param>
-      <key>label16</key>
-      <value>Tab 16</value>
-    </param>
-    <param>
-      <key>label17</key>
-      <value>Tab 17</value>
-    </param>
-    <param>
-      <key>label18</key>
-      <value>Tab 18</value>
-    </param>
-    <param>
-      <key>label19</key>
-      <value>Tab 19</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>2,1,1,1</value>
-    </param>
-    <param>
-      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(40, 755)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
-    </param>
-    <param>
-      <key>yunit</key>
-      <value>""</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>size</key>
-      <value>2500</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>srate</key>
+      <key>width2</key>
       <value>1</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>style3</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>2,0,1,1</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style1</key>
+      <key>width5</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style2</key>
+      <key>width6</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style3</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>label4</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style4</key>
+      <key>width8</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>label5</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style5</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>size</key>
+      <value>600</value>
     </param>
     <param>
-      <key>width6</key>
+      <key>srate</key>
       <value>1</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>tr_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>tr_tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_tab_widget</key>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(336, 11)</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>gui_hint</key>
+      <value>2,0,1,2</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>id</key>
+      <value>tab0</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>label0</key>
+      <value>Time</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>label1</key>
+      <value>Freq.</value>
     </param>
     <param>
       <key>label10</key>
-      <value></value>
+      <value>Tab 10</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>label11</key>
+      <value>Tab 11</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>label12</key>
+      <value>Tab 12</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>1</value>
+      <key>label13</key>
+      <value>Tab 13</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>label14</key>
+      <value>Tab 14</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>label15</key>
+      <value>Tab 15</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>label16</key>
+      <value>Tab 16</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>label17</key>
+      <value>Tab 17</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>label18</key>
+      <value>Tab 18</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 339)</value>
+      <key>label19</key>
+      <value>Tab 19</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>label2</key>
+      <value>Const.</value>
     </param>
-  </block>
-  <block>
-    <key>digital_burst_shaper_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_burst_shaper_xx_0</value>
+      <key>label3</key>
+      <value>Tab 3</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label4</key>
+      <value>Tab 4</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>label5</key>
+      <value>Tab 5</value>
     </param>
     <param>
-      <key>window</key>
-      <value>firdes.window(firdes.WIN_HANN, 20, 0)</value>
+      <key>label6</key>
+      <value>Tab 6</value>
     </param>
     <param>
-      <key>pre_padding</key>
-      <value>20</value>
+      <key>label7</key>
+      <value>Tab 7</value>
     </param>
     <param>
-      <key>post_padding</key>
-      <value>20</value>
+      <key>label8</key>
+      <value>Tab 8</value>
     </param>
     <param>
-      <key>insert_phasing</key>
-      <value>True</value>
+      <key>label9</key>
+      <value>Tab 9</value>
     </param>
     <param>
-      <key>length_tag_name</key>
-      <value>"packet_len"</value>
+      <key>num_tabs</key>
+      <value>3</value>
     </param>
+  </block>
+  <block>
+    <key>uhd_usrp_sink</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>ant0</key>
+      <value>TX/RX</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw0</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>center_freq0</key>
+      <value>uhd.tune_request(freq, samp_rate/2.0)</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>norm_gain0</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(448, 379)</value>
+      <key>gain0</key>
+      <value>gain</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>ant10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw10</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
     <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
+      <key>center_freq10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>norm_gain10</key>
+      <value>False</value>
     </param>
     <param>
-      <key>type</key>
-      <value>ccf</value>
+      <key>gain10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rrate</key>
-      <value>sps</value>
+      <key>ant11</key>
+      <value></value>
     </param>
     <param>
-      <key>taps</key>
-      <value>tx_rrc_taps</value>
+      <key>bw11</key>
+      <value>0</value>
     </param>
     <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
+      <key>center_freq11</key>
+      <value>0</value>
     </param>
     <param>
-      <key>atten</key>
-      <value>100</value>
+      <key>norm_gain11</key>
+      <value>False</value>
     </param>
     <param>
-      <key>samp_delay</key>
+      <key>gain11</key>
       <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant12</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw12</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>center_freq12</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>norm_gain12</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain12</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>ant13</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(680, 387)</value>
+      <key>bw13</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>center_freq13</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>channels_channel_model</key>
     <param>
-      <key>id</key>
-      <value>channels_channel_model_0</value>
+      <key>norm_gain13</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain13</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant14</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw14</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>center_freq14</key>
+      <value>0</value>
     </param>
     <param>
-      <key>noise_voltage</key>
-      <value>noise</value>
+      <key>norm_gain14</key>
+      <value>False</value>
     </param>
     <param>
-      <key>freq_offset</key>
-      <value>freq_offset</value>
+      <key>gain14</key>
+      <value>0</value>
     </param>
     <param>
-      <key>epsilon</key>
-      <value>time_offset</value>
+      <key>ant15</key>
+      <value></value>
     </param>
     <param>
-      <key>taps</key>
-      <value>1.0</value>
+      <key>bw15</key>
+      <value>0</value>
     </param>
     <param>
-      <key>seed</key>
+      <key>center_freq15</key>
       <value>0</value>
     </param>
     <param>
-      <key>block_tags</key>
+      <key>norm_gain15</key>
       <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain15</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant16</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw16</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq16</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(936, 379)</value>
+      <key>norm_gain16</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain16</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+      <key>ant17</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw17</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>center_freq17</key>
+      <value>0</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>norm_gain17</key>
+      <value>False</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>gain17</key>
+      <value>0</value>
     </param>
     <param>
-      <key>freqhalf</key>
-      <value>True</value>
+      <key>ant18</key>
+      <value></value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>bw18</key>
+      <value>0</value>
     </param>
     <param>
-      <key>fc</key>
+      <key>center_freq18</key>
       <value>0</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>1</value>
+      <key>norm_gain18</key>
+      <value>False</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>gain18</key>
+      <value>0</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>ant19</key>
+      <value></value>
     </param>
     <param>
-      <key>average</key>
-      <value>1.0</value>
+      <key>bw19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>center_freq19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>norm_gain19</key>
+      <value>False</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>gain19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>ant1</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>bw1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>showports</key>
-      <value>True</value>
+      <key>center_freq1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>norm_gain1</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>gain1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>ant20</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw20</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>center_freq20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ctrlpanel</key>
+      <key>norm_gain20</key>
       <value>False</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>gain20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>ant21</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>bw21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>center_freq21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>norm_gain21</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>gain21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>ant22</key>
+      <value></value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>bw22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>center_freq22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>norm_gain22</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>gain22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>ant23</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>bw23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>center_freq23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>norm_gain23</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>gain23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>ant24</key>
+      <value></value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>bw24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>center_freq24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>norm_gain24</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>gain24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label6</key>
+      <key>ant25</key>
       <value></value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>bw25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>center_freq25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>norm_gain25</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>gain25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>ant26</key>
+      <value></value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>bw26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>center_freq26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>norm_gain26</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>gain26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>ant27</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>bw27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>center_freq27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>norm_gain27</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>gain27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>ant28</key>
+      <value></value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>bw28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>center_freq28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>norm_gain28</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>gain28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant29</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>center_freq29</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>norm_gain29</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain29</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>ant2</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 419)</value>
+      <key>bw2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>center_freq2</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0</value>
+      <key>norm_gain2</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>gain2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>ant30</key>
+      <value></value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>bw30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>size</key>
-      <value>1024</value>
+      <key>center_freq30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>grid</key>
+      <key>norm_gain30</key>
       <value>False</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>gain30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>ant31</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>bw31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>xmin</key>
-      <value>-2</value>
+      <key>center_freq31</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>norm_gain31</key>
+      <value>False</value>
     </param>
     <param>
-      <key>xmax</key>
-      <value>2</value>
+      <key>gain31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>ant3</key>
+      <value></value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>bw3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>center_freq3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>norm_gain3</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>gain3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>ant4</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>bw4</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>center_freq4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>legend</key>
+      <key>norm_gain4</key>
       <value>False</value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
+      <key>gain4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>ant5</key>
+      <value></value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>bw5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style1</key>
+      <key>center_freq5</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>0</value>
+      <key>norm_gain5</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>gain5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>ant6</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>bw6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>center_freq6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style2</key>
+      <key>norm_gain6</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain6</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker2</key>
+      <key>ant7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw7</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>center_freq7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>norm_gain7</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>gain7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"red"</value>
+      <key>ant8</key>
+      <value></value>
     </param>
     <param>
-      <key>style3</key>
+      <key>bw8</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker3</key>
+      <key>center_freq8</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>norm_gain8</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>gain8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>ant9</key>
+      <value></value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"red"</value>
+      <key>bw9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style4</key>
+      <key>center_freq9</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker4</key>
+      <key>norm_gain9</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain9</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>clock_rate</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>label5</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"red"</value>
+      <key>dev_addr</key>
+      <value>""</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>0</value>
+      <key>dev_args</key>
+      <value>""</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>_coordinate</key>
+      <value>(1432, 139)</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>id</key>
+      <value>uhd_usrp_sink_0</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"red"</value>
+      <key>type</key>
+      <value>fc32</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>0</value>
+      <key>clock_source0</key>
+      <value>gpsdo</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>0</value>
+      <key>sd_spec0</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>time_source0</key>
+      <value>gpsdo</value>
     </param>
     <param>
-      <key>label7</key>
+      <key>clock_source1</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>sd_spec1</key>
+      <value></value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"red"</value>
+      <key>time_source1</key>
+      <value></value>
     </param>
     <param>
-      <key>style7</key>
-      <value>0</value>
+      <key>clock_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>0</value>
+      <key>sd_spec2</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>time_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
+      <key>clock_source3</key>
       <value></value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>sd_spec3</key>
+      <value></value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"red"</value>
+      <key>time_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>style8</key>
-      <value>0</value>
+      <key>clock_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>0</value>
+      <key>sd_spec4</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>time_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>label9</key>
+      <key>clock_source5</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>sd_spec5</key>
+      <value></value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"red"</value>
+      <key>time_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>style9</key>
-      <value>0</value>
+      <key>clock_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>0</value>
+      <key>sd_spec6</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>time_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>label10</key>
+      <key>clock_source7</key>
       <value></value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>sd_spec7</key>
+      <value></value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"red"</value>
+      <key>time_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>style10</key>
-      <value>0</value>
+      <key>nchan</key>
+      <value>1</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>0</value>
+      <key>num_mboards</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>hide_cmd_port</key>
+      <value>False</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>stream_args</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>stream_chans</key>
+      <value>[]</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 499)</value>
+      <key>sync</key>
+      <value>sync</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>len_tag_name</key>
+      <value>packet_len</value>
+    </param>
+    <param>
+      <key>otw</key>
+      <value></value>
     </param>
   </block>
   <connection>
-    <source_block_id>rx_mod_header</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>rx_mod_payload</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>1</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_crc32_async_bb_1</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>fec_async_encoder_0</source_block_id>
-    <sink_block_id>digital_packet_format_async_1</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
-    <source_key>header</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
-    <source_key>payload</source_key>
-    <sink_key>pdus</sink_key>
+    <source_block_id>blocks_message_strobe_0</source_block_id>
+    <sink_block_id>blocks_random_pdu_0</sink_block_id>
+    <source_key>strobe</source_key>
+    <sink_key>generate</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>blocks_tag_debug_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>channels_channel_model_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_tagged_stream_mux_0</source_block_id>
-    <sink_block_id>digital_burst_shaper_xx_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_burst_shaper_xx_0</source_block_id>
-    <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>uhd_usrp_sink_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
+    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
+    <sink_block_id>blocks_unpack_k_bits_bb_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>blocks_random_pdu_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
+    <sink_block_id>blocks_message_debug_0</sink_block_id>
     <source_key>pdus</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_message_strobe_0</source_block_id>
-    <sink_block_id>blocks_random_pdu_0</sink_block_id>
-    <source_key>strobe</source_key>
-    <sink_key>generate</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_map_bb_1_0</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <sink_key>print_pdu</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <source_block_id>blocks_random_pdu_0</source_block_id>
+    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>pdus</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>digital_map_bb_1_0</sink_block_id>
+    <source_block_id>blocks_tagged_stream_multiply_length_0</source_block_id>
+    <sink_block_id>fir_filter_xxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>digital_map_bb_1</sink_block_id>
+    <source_block_id>blocks_unpack_k_bits_bb_0</source_block_id>
+    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_map_bb_1</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
+    <source_block_id>digital_chunks_to_symbols_xx_0</source_block_id>
+    <sink_block_id>interp_fir_filter_xxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0</source_block_id>
-    <sink_block_id>mod_header</sink_block_id>
+    <source_block_id>fir_filter_xxx_0</source_block_id>
+    <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0_0</source_block_id>
-    <sink_block_id>mod_payload</sink_block_id>
+    <source_block_id>interp_fir_filter_xxx_0</source_block_id>
+    <sink_block_id>blocks_tagged_stream_multiply_length_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-digital/examples/packet/transmitter_sim.grc 
b/gr-digital/examples/packet/transmitter_sim_hier.grc
similarity index 63%
copy from gr-digital/examples/packet/transmitter_sim.grc
copy to gr-digital/examples/packet/transmitter_sim_hier.grc
index 8917396..ed19881 100644
--- a/gr-digital/examples/packet/transmitter_sim.grc
+++ b/gr-digital/examples/packet/transmitter_sim_hier.grc
@@ -1,68 +1,32 @@
-<?xml version='1.0' encoding='ASCII'?>
-<?grc format='1' created='3.7.8'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.10'?>
 <flow_graph>
   <timestamp>Thu Dec  4 14:34:25 2014</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>parse_packet_header_soft</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>title</key>
-      <value></value>
-    </param>
-    <param>
       <key>author</key>
       <value></value>
     </param>
     <param>
-      <key>description</key>
-      <value></value>
-    </param>
-    <param>
       <key>window_size</key>
       <value>2000,2000</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
-    </param>
-    <param>
       <key>category</key>
       <value>Custom</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
-    </param>
-    <param>
-      <key>run</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>max_nouts</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>realtime_scheduling</key>
-      <value></value>
-    </param>
-    <param>
-      <key>thread_safe_setters</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>description</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
@@ -72,554 +36,534 @@
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>rate</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
     </param>
     <param>
-      <key>value</key>
-      <value>2</value>
+      <key>id</key>
+      <value>parse_packet_header_soft</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>max_nouts</key>
+      <value>0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>qt_qss_theme</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1312, 819)</value>
+      <key>realtime_scheduling</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>k</value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>run</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>7</value>
+      <key>thread_safe_setters</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>title</key>
       <value></value>
     </param>
+  </block>
+  <block>
+    <key>variable_constellation</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1240, 819)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>rep</value>
+      <key>dims</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>3</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
       <key>_coordinate</key>
-      <value>(1216, 883)</value>
+      <value>(184, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>polys</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>[109, 79]</value>
+      <value>Const_HDR</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1288, 883)</value>
+      <key>precision</key>
+      <value>8</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
   </block>
   <block>
-    <key>variable</key>
-    <param>
-      <key>id</key>
-      <value>eb</value>
-    </param>
+    <key>variable_constellation</key>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>0.22</value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>dims</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1216, 67)</value>
+      <value>(344, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>nfilts</value>
+      <value>Const_PLD</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>value</key>
-      <value>32</value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>precision</key>
+      <value>8</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
+  </block>
+  <block>
+    <key>variable_constellation</key>
     <param>
-      <key>_coordinate</key>
-      <value>(1144, 67)</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>const_points</key>
+      <value>digital.psk_4()[0]</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>sps</value>
+      <key>dims</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>0</value>
     </param>
     <param>
-      <key>value</key>
-      <value>2</value>
+      <key>_coordinate</key>
+      <value>(504, 11)</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>id</key>
+      <value>Const_PLD</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1072, 67)</value>
+      <key>rot_sym</key>
+      <value>4</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
     <param>
-      <key>id</key>
-      <value>rx_mod_header</value>
+      <key>precision</key>
+      <value>8</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>sym_map</key>
+      <value>digital.psk_4()[1]</value>
     </param>
+  </block>
+  <block>
+    <key>variable_cc_decoder_def</key>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>padding</key>
+      <value>False</value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(16, 379)</value>
+      <key>k</key>
+      <value>k</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
     <param>
-      <key>id</key>
-      <value>rx_mod_payload</value>
+      <key>dim2</key>
+      <value>4</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>False</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <key>state_end</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(16, 427)</value>
+      <value>(752, 619)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_mux</key>
     <param>
       <key>id</key>
-      <value>blocks_tagged_stream_mux_0</value>
+      <value>dec</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>"ok"</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ninputs</key>
-      <value>2</value>
+      <key>polys</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
+      <key>rate</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>state_start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tag_preserve_head_pos</key>
-      <value>0</value>
+      <key>mode</key>
+      <value>fec.CC_TERMINATED</value>
     </param>
+  </block>
+  <block>
+    <key>variable_dummy_decoder_def</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(216, 400)</value>
+      <value>(360, 523)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_message_strobe</key>
     <param>
       <key>id</key>
-      <value>blocks_message_strobe_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>dec</value>
     </param>
     <param>
-      <key>msg</key>
-      <value>pmt.intern("TEST")</value>
+      <key>value</key>
+      <value>"ok"</value>
     </param>
     <param>
-      <key>period</key>
-      <value>100</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_repetition_decoder_def</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>False</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(24, 83)</value>
+      <value>(552, 539)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>fec_async_encoder</key>
     <param>
       <key>id</key>
-      <value>fec_async_encoder_0</value>
+      <value>dec</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>"ok"</value>
     </param>
     <param>
-      <key>encoder</key>
-      <value>enc</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>packed</key>
-      <value>True</value>
+      <key>rep</key>
+      <value>rep</value>
     </param>
     <param>
-      <key>rev_unpack</key>
-      <value>False</value>
+      <key>prob</key>
+      <value>0.5</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>rev_pack</key>
-      <value>False</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(824, 91)</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>id</key>
+      <value>eb</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>0.22</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_cc_encoder_def</key>
+    <param>
+      <key>padding</key>
+      <value>False</value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(80, 171)</value>
+      <key>k</key>
+      <value>k</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>digital_crc32_async_bb</key>
     <param>
-      <key>id</key>
-      <value>digital_crc32_async_bb_1</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>check</key>
       <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(752, 443)</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>id</key>
+      <value>enc</value>
+    </param>
+    <param>
+      <key>ndim</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>polys</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(424, 91)</value>
+      <key>rate</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>state_start</key>
       <value>0</value>
     </param>
+    <param>
+      <key>mode</key>
+      <value>fec.CC_TERMINATED</value>
+    </param>
   </block>
   <block>
-    <key>blocks_random_pdu</key>
+    <key>variable_dummy_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>blocks_random_pdu_0</value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>dim1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>minsize</key>
-      <value>50</value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
-      <key>maxsize</key>
-      <value>100</value>
+      <key>_coordinate</key>
+      <value>(360, 443)</value>
     </param>
     <param>
-      <key>mask</key>
-      <value>0xFF</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>length_modulo</key>
-      <value>2</value>
+      <key>id</key>
+      <value>enc</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_repetition_encoder_def</key>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(208, 67)</value>
+      <value>(552, 443)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
+      <value>enc</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>rep</key>
+      <value>rep</value>
     </param>
+  </block>
+  <block>
+    <key>variable_dummy_encoder_def</key>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>dim1</key>
@@ -627,425 +571,447 @@
     </param>
     <param>
       <key>dim2</key>
-      <value>4</value>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>framebits</key>
       <value>8000</value>
     </param>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>_coordinate</key>
+      <value>(176, 443)</value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>id</key>
+      <value>enc_hdr</value>
     </param>
     <param>
-      <key>state_start</key>
+      <key>ndim</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_packet_formatter_default</key>
     <param>
-      <key>state_end</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
-    </param>
-    <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>access_code</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1384, 779)</value>
+      <value>(680, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <value>formatter</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>threshold</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>_coordinate</key>
+      <value>(608, 659)</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>prob</key>
-      <value>0.5</value>
+      <key>id</key>
+      <value>k</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>value</key>
+      <value>7</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1184, 699)</value>
+      <value>(752, 91)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>nfilts</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>32</value>
+    </param>
   </block>
   <block>
-    <key>variable_cc_encoder_def</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>enc</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
+      <value>True</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(656, 723)</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>id</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>value</key>
+      <value>[109, 79]</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>_coordinate</key>
+      <value>(680, 659)</value>
     </param>
     <param>
-      <key>state_start</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>id</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>value</key>
+      <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1384, 603)</value>
+      <value>(584, 723)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>rep</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>3</value>
+    </param>
   </block>
   <block>
-    <key>variable_dummy_encoder_def</key>
+    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>id</key>
-      <value>enc</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>alpha</key>
+      <value>eb</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(768, 243)</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>gain</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>id</key>
+      <value>rx_rrc_taps</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>ntaps</key>
+      <value>15*sps</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(992, 603)</value>
+      <key>samp_rate</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sym_rate</key>
+      <value>1.0</value>
     </param>
   </block>
   <block>
-    <key>variable_dummy_decoder_def</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>dec</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>_coordinate</key>
+      <value>(680, 91)</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>id</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>value</key>
+      <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha</key>
+      <value>eb</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(992, 683)</value>
+      <value>(912, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc</value>
+      <key>gain</key>
+      <value>nfilts</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>id</key>
+      <value>tx_rrc_taps</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>ntaps</key>
+      <value>5*sps*nfilts</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>samp_rate</key>
+      <value>sps*nfilts</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>sym_rate</key>
+      <value>1.0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_message_debug</key>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1184, 603)</value>
+      <value>(592, 329)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>0</value>
+      <value>180</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_message_debug_0</value>
     </param>
   </block>
   <block>
-    <key>variable_qtgui_range</key>
+    <key>blocks_message_strobe</key>
     <param>
-      <key>id</key>
-      <value>noise</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>Noise Amp</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>start</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(56, 211)</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>0.5</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>id</key>
+      <value>blocks_message_strobe_0</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>msg</key>
+      <value>pmt.intern("TEST")</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,0,1,1</value>
+      <key>period</key>
+      <value>1000</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_random_pdu</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(40, 627)</value>
+      <key>mask</key>
+      <value>0x0F</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>freq_offset</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Freq. Offset</value>
+      <key>_coordinate</key>
+      <value>(264, 195)</value>
     </param>
     <param>
-      <key>value</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>1</value>
+      <key>id</key>
+      <value>blocks_random_pdu_0</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>length_modulo</key>
+      <value>2</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>maxsize</key>
+      <value>10</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>minsize</key>
+      <value>10</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,1,1,1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>fir_filter_xxx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -1055,485 +1021,480 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(152, 627)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0_0</value>
+      <key>decim</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>byte</value>
+      <value>2</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>_coordinate</key>
+      <value>(768, 171)</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>id</key>
+      <value>fir_filter_xxx_0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>samp_delay</key>
+      <value>(len(rx_rrc_taps)-1)/2</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(336, 211)</value>
+      <key>taps</key>
+      <value>rx_rrc_taps</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>type</key>
+      <value>ccc</value>
     </param>
   </block>
   <block>
-    <key>blocks_pdu_to_tagged_stream</key>
+    <key>packet_tx</key>
     <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>_coordinate</key>
+      <value>(520, 179)</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>hdr_enc</key>
+      <value>enc_hdr</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>hdr_const</key>
+      <value>Const_HDR</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>id</key>
+      <value>packet_tx_0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(336, 283)</value>
+      <key>formatter</key>
+      <value>formatter</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>pld_enc</key>
+      <value>enc</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
-      <key>id</key>
-      <value>digital_map_bb_1_0</value>
+      <key>pld_const</key>
+      <value>Const_PLD</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>psf_taps</key>
+      <value>tx_rrc_taps</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_PLD.pre_diff_code()</value>
+      <key>sps</key>
+      <value>sps</value>
+    </param>
+  </block>
+  <block>
+    <key>qtgui_const_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(1024, 323)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 283)</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>id</key>
+      <value>qtgui_const_sink_x_0</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_PLD.bits_per_symbol()</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>marker1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>style1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>color10</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(560, 275)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
+      <key>marker10</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
-      <key>id</key>
-      <value>digital_map_bb_1</value>
+      <key>style10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_HDR.pre_diff_code()</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker2</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style2</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 211)</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color3</key>
+      <value>"red"</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>l</key>
-      <value>Const_HDR.bits_per_symbol()</value>
+      <key>style3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>color4</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>marker4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>style4</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(560, 203)</value>
+      <key>color5</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>label5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker5</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_packet_format_async</key>
     <param>
-      <key>id</key>
-      <value>digital_packet_format_async_1</value>
+      <key>style5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>formatter</key>
-      <value>formatter</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color6</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker6</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style6</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>width6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(80, 232)</value>
+      <key>marker7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style7</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0_0</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>color8</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>label8</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_PLD.points()</value>
+      <key>style8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dimension</key>
+      <key>width8</key>
       <value>1</value>
     </param>
     <param>
-      <key>num_ports</key>
-      <value>1</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color9</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker9</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style9</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 275)</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>id</key>
-      <value>mod_header</value>
+      <key>size</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1120, 211)</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>tr_tag</key>
+      <value>packet_len</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>xmax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>xmin</key>
+      <value>-2</value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_HDR.points()</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>dimension</key>
-      <value>1</value>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>num_ports</key>
-      <value>1</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>fc</key>
       <value>0</value>
     </param>
     <param>
@@ -1541,1758 +1502,788 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 203)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>id</key>
-      <value>mod_payload</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(1024, 243)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1120, 283)</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_packet_formatter_default</key>
+    <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
     <param>
       <key>id</key>
-      <value>formatter</value>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>access_code</key>
-      <value>0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1072, 3)</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
-      <key>id</key>
-      <value>Const_PLD</value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_4()[1]</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_4()[0]</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>rot_sym</key>
-      <value>4</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>dims</key>
+      <key>label2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width2</key>
       <value>1</value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 3)</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
-      <key>id</key>
-      <value>Const_PLD</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>rot_sym</key>
-      <value>2</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
-      <key>dims</key>
+      <key>width5</key>
       <value>1</value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(736, 3)</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
-      <key>id</key>
-      <value>Const_HDR</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>rot_sym</key>
-      <value>2</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>dims</key>
+      <key>width8</key>
       <value>1</value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(576, 3)</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_rrc_filter_taps</key>
-    <param>
-      <key>id</key>
-      <value>tx_rrc_taps</value>
-    </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gain</key>
-      <value>nfilts</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>nfilts</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sym_rate</key>
-      <value>1.0</value>
+      <key>showports</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha</key>
-      <value>eb</value>
+      <key>freqhalf</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ntaps</key>
-      <value>5*sps*nfilts</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1304, 3)</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>time_offset</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
       <key>label</key>
-      <value>Time Offset</value>
+      <value>Relative Gain</value>
     </param>
     <param>
-      <key>value</key>
-      <value>1.0</value>
+      <key>ymax</key>
+      <value>10</value>
     </param>
     <param>
-      <key>start</key>
-      <value>0.99</value>
+      <key>ymin</key>
+      <value>-140</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>1.01</value>
+      <key>units</key>
+      <value>dB</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>step</key>
-      <value>0.0001</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>1,0,1,1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(264, 627)</value>
+      <value>(1024, 163)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>2,0,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_tab_widget</key>
+    <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
     <param>
       <key>id</key>
-      <value>tab0</value>
+      <value>qtgui_time_sink_x_1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>num_tabs</key>
-      <value>2</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>label0</key>
-      <value>Freq.</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
       <key>label1</key>
-      <value>Const.</value>
+      <value></value>
     </param>
     <param>
-      <key>label2</key>
-      <value>Tab 2</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>label3</key>
-      <value>Tab 3</value>
+      <key>style1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label4</key>
-      <value>Tab 4</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label5</key>
-      <value>Tab 5</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>label6</key>
-      <value>Tab 6</value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>label7</key>
-      <value>Tab 7</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
-      <value>Tab 8</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>label9</key>
-      <value>Tab 9</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value>Tab 10</value>
-    </param>
-    <param>
-      <key>label11</key>
-      <value>Tab 11</value>
-    </param>
-    <param>
-      <key>label12</key>
-      <value>Tab 12</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label13</key>
-      <value>Tab 13</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label14</key>
-      <value>Tab 14</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>label15</key>
-      <value>Tab 15</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>label16</key>
-      <value>Tab 16</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>label17</key>
-      <value>Tab 17</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>label18</key>
-      <value>Tab 18</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label19</key>
-      <value>Tab 19</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>2,1,1,1</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(40, 755)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>yunit</key>
-      <value>""</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>size</key>
-      <value>2500</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>srate</key>
+      <key>width4</key>
       <value>1</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>style5</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>2,0,1,1</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style1</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style2</key>
+      <key>width8</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style3</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>size</key>
+      <value>1500</value>
     </param>
     <param>
-      <key>width4</key>
+      <key>srate</key>
       <value>1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>tr_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>tr_tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1192, 339)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_burst_shaper_xx</key>
-    <param>
-      <key>id</key>
-      <value>digital_burst_shaper_xx_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>window</key>
-      <value>firdes.window(firdes.WIN_HANN, 20, 0)</value>
-    </param>
-    <param>
-      <key>pre_padding</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>post_padding</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>insert_phasing</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>length_tag_name</key>
-      <value>"packet_len"</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(448, 379)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
-    <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>ccf</value>
-    </param>
-    <param>
-      <key>rrate</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>tx_rrc_taps</value>
-    </param>
-    <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>atten</key>
-      <value>100</value>
-    </param>
-    <param>
-      <key>samp_delay</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(680, 387)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>channels_channel_model</key>
-    <param>
-      <key>id</key>
-      <value>channels_channel_model_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>noise_voltage</key>
-      <value>noise</value>
-    </param>
-    <param>
-      <key>freq_offset</key>
-      <value>freq_offset</value>
-    </param>
-    <param>
-      <key>epsilon</key>
-      <value>time_offset</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>seed</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>block_tags</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(936, 379)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>fftsize</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>freqhalf</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
-    </param>
-    <param>
-      <key>fc</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>bw</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>average</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-140</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>10</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>showports</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1192, 419)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>xmin</key>
-      <value>-2</value>
-    </param>
-    <param>
-      <key>xmax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>0</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>0</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_tab_widget</key>
     <param>
-      <key>label6</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label7</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"red"</value>
+      <key>_coordinate</key>
+      <value>(32, 443)</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>0</value>
+      <key>gui_hint</key>
+      <value>2,1,1,1</value>
     </param>
     <param>
-      <key>marker7</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>id</key>
+      <value>tab0</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"red"</value>
+      <key>label0</key>
+      <value>Const</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>0</value>
+      <key>label1</key>
+      <value>Freq</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>0</value>
+      <key>label10</key>
+      <value>Tab 10</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>label11</key>
+      <value>Tab 11</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>label12</key>
+      <value>Tab 12</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>label13</key>
+      <value>Tab 13</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"red"</value>
+      <key>label14</key>
+      <value>Tab 14</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>0</value>
+      <key>label15</key>
+      <value>Tab 15</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>0</value>
+      <key>label16</key>
+      <value>Tab 16</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>label17</key>
+      <value>Tab 17</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>label18</key>
+      <value>Tab 18</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>label19</key>
+      <value>Tab 19</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"red"</value>
+      <key>label2</key>
+      <value>Tab 2</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>0</value>
+      <key>label3</key>
+      <value>Tab 3</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>0</value>
+      <key>label4</key>
+      <value>Tab 4</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>label5</key>
+      <value>Tab 5</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>label6</key>
+      <value>Tab 6</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>label7</key>
+      <value>Tab 7</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>label8</key>
+      <value>Tab 8</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 499)</value>
+      <key>label9</key>
+      <value>Tab 9</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>num_tabs</key>
+      <value>2</value>
     </param>
   </block>
   <connection>
-    <source_block_id>rx_mod_header</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>rx_mod_payload</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>1</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_crc32_async_bb_1</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>fec_async_encoder_0</source_block_id>
-    <sink_block_id>digital_packet_format_async_1</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
-    <source_key>header</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
-    <source_key>payload</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>channels_channel_model_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_tagged_stream_mux_0</source_block_id>
-    <sink_block_id>digital_burst_shaper_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_burst_shaper_xx_0</source_block_id>
-    <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_random_pdu_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
-    <source_key>pdus</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
     <source_block_id>blocks_message_strobe_0</source_block_id>
     <sink_block_id>blocks_random_pdu_0</sink_block_id>
     <source_key>strobe</source_key>
     <sink_key>generate</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_map_bb_1_0</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <source_block_id>blocks_random_pdu_0</source_block_id>
+    <sink_block_id>packet_tx_0</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>digital_map_bb_1_0</sink_block_id>
+    <source_block_id>fir_filter_xxx_0</source_block_id>
+    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>digital_map_bb_1</sink_block_id>
+    <source_block_id>fir_filter_xxx_0</source_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_map_bb_1</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
+    <source_block_id>fir_filter_xxx_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0</source_block_id>
-    <sink_block_id>mod_header</sink_block_id>
+    <source_block_id>packet_tx_0</source_block_id>
+    <sink_block_id>fir_filter_xxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0_0</source_block_id>
-    <sink_block_id>mod_payload</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <source_block_id>packet_tx_0</source_block_id>
+    <sink_block_id>blocks_message_debug_0</sink_block_id>
+    <source_key>postcrc</source_key>
+    <sink_key>print_pdu</sink_key>
   </connection>
 </flow_graph>
diff --git a/gr-digital/examples/packet/tx_stage0.grc 
b/gr-digital/examples/packet/tx_stage0.grc
new file mode 100644
index 0000000..e05f239
--- /dev/null
+++ b/gr-digital/examples/packet/tx_stage0.grc
@@ -0,0 +1,286 @@
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.10'?>
+<flow_graph>
+  <timestamp>Sun Apr 10 12:10:29 2016</timestamp>
+  <block>
+    <key>options</key>
+    <param>
+      <key>author</key>
+      <value></value>
+    </param>
+    <param>
+      <key>window_size</key>
+      <value></value>
+    </param>
+    <param>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>description</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>generate_options</key>
+      <value>qt_gui</value>
+    </param>
+    <param>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tx_stage0</value>
+    </param>
+    <param>
+      <key>max_nouts</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>qt_qss_theme</key>
+      <value></value>
+    </param>
+    <param>
+      <key>realtime_scheduling</key>
+      <value></value>
+    </param>
+    <param>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
+    </param>
+    <param>
+      <key>run_options</key>
+      <value>prompt</value>
+    </param>
+    <param>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value></value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_message_debug</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(536, 97)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_message_debug_0</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_message_strobe</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(32, 107)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_message_strobe_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>msg</key>
+      <value>pmt.PMT_T</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>period</key>
+      <value>2000</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_random_pdu</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>mask</key>
+      <value>0xff</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(216, 91)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_random_pdu_0</value>
+    </param>
+    <param>
+      <key>length_modulo</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>maxsize</key>
+      <value>150</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minsize</key>
+      <value>15</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_tuntap_pdu</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>istunflag</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(224, 203)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_tuntap_pdu_0</value>
+    </param>
+    <param>
+      <key>ifn</key>
+      <value>tap0</value>
+    </param>
+    <param>
+      <key>mtu</key>
+      <value>10000</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+  </block>
+  <connection>
+    <source_block_id>blocks_message_strobe_0</source_block_id>
+    <sink_block_id>blocks_random_pdu_0</sink_block_id>
+    <source_key>strobe</source_key>
+    <sink_key>generate</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_random_pdu_0</source_block_id>
+    <sink_block_id>blocks_message_debug_0</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>print_pdu</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_tuntap_pdu_0</source_block_id>
+    <sink_block_id>blocks_message_debug_0</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>print_pdu</sink_key>
+  </connection>
+</flow_graph>
diff --git a/gr-digital/examples/packet/tx_stage1.grc 
b/gr-digital/examples/packet/tx_stage1.grc
new file mode 100644
index 0000000..d897a05
--- /dev/null
+++ b/gr-digital/examples/packet/tx_stage1.grc
@@ -0,0 +1,284 @@
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.10'?>
+<flow_graph>
+  <timestamp>Sun Apr 10 12:10:29 2016</timestamp>
+  <block>
+    <key>options</key>
+    <param>
+      <key>author</key>
+      <value></value>
+    </param>
+    <param>
+      <key>window_size</key>
+      <value></value>
+    </param>
+    <param>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>description</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>generate_options</key>
+      <value>qt_gui</value>
+    </param>
+    <param>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tx_stage1</value>
+    </param>
+    <param>
+      <key>max_nouts</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>qt_qss_theme</key>
+      <value></value>
+    </param>
+    <param>
+      <key>realtime_scheduling</key>
+      <value></value>
+    </param>
+    <param>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
+    </param>
+    <param>
+      <key>run_options</key>
+      <value>prompt</value>
+    </param>
+    <param>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value></value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_message_debug</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(672, 49)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_message_debug_0</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_message_strobe</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(32, 107)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_message_strobe_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>msg</key>
+      <value>pmt.PMT_T</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>period</key>
+      <value>2000</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_random_pdu</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>mask</key>
+      <value>0xff</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(216, 91)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_random_pdu_0</value>
+    </param>
+    <param>
+      <key>length_modulo</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>maxsize</key>
+      <value>50</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minsize</key>
+      <value>15</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>digital_crc32_async_bb</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(456, 171)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>digital_crc32_async_bb_1</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>check</key>
+      <value>False</value>
+    </param>
+  </block>
+  <connection>
+    <source_block_id>blocks_message_strobe_0</source_block_id>
+    <sink_block_id>blocks_random_pdu_0</sink_block_id>
+    <source_key>strobe</source_key>
+    <sink_key>generate</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_random_pdu_0</source_block_id>
+    <sink_block_id>blocks_message_debug_0</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>print_pdu</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_random_pdu_0</source_block_id>
+    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>in</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>digital_crc32_async_bb_1</source_block_id>
+    <sink_block_id>blocks_message_debug_0</sink_block_id>
+    <source_key>out</source_key>
+    <sink_key>print_pdu</sink_key>
+  </connection>
+</flow_graph>
diff --git a/gr-digital/examples/packet/tx_stage2.grc 
b/gr-digital/examples/packet/tx_stage2.grc
new file mode 100644
index 0000000..a2b5386
--- /dev/null
+++ b/gr-digital/examples/packet/tx_stage2.grc
@@ -0,0 +1,494 @@
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.10'?>
+<flow_graph>
+  <timestamp>Sun Apr 10 12:10:29 2016</timestamp>
+  <block>
+    <key>options</key>
+    <param>
+      <key>author</key>
+      <value></value>
+    </param>
+    <param>
+      <key>window_size</key>
+      <value></value>
+    </param>
+    <param>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>description</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>generate_options</key>
+      <value>qt_gui</value>
+    </param>
+    <param>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tx_stage2</value>
+    </param>
+    <param>
+      <key>max_nouts</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>qt_qss_theme</key>
+      <value></value>
+    </param>
+    <param>
+      <key>realtime_scheduling</key>
+      <value></value>
+    </param>
+    <param>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
+    </param>
+    <param>
+      <key>run_options</key>
+      <value>prompt</value>
+    </param>
+    <param>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value></value>
+    </param>
+  </block>
+  <block>
+    <key>variable_cc_encoder_def</key>
+    <param>
+      <key>padding</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>k</key>
+      <value>7</value>
+    </param>
+    <param>
+      <key>dim1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>dim2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>1500*8</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(216, 211)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>enc</value>
+    </param>
+    <param>
+      <key>ndim</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>polys</key>
+      <value>[109,79]</value>
+    </param>
+    <param>
+      <key>rate</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>state_start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>mode</key>
+      <value>fec.CC_TERMINATED</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_dummy_encoder_def</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>dim1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>dim2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>8000</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(16, 211)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>enc</value>
+    </param>
+    <param>
+      <key>ndim</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_repetition_encoder_def</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>dim1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>dim2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>8000</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(16, 291)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>enc</value>
+    </param>
+    <param>
+      <key>ndim</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>rep</key>
+      <value>3</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_message_debug</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(920, 57)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_message_debug_0</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_message_strobe</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(32, 107)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_message_strobe_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>msg</key>
+      <value>pmt.PMT_T</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>period</key>
+      <value>2000</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_random_pdu</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>mask</key>
+      <value>0xff</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(216, 91)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_random_pdu_0</value>
+    </param>
+    <param>
+      <key>length_modulo</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>maxsize</key>
+      <value>50</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minsize</key>
+      <value>15</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>digital_crc32_async_bb</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(432, 115)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>digital_crc32_async_bb_1</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>check</key>
+      <value>False</value>
+    </param>
+  </block>
+  <block>
+    <key>fec_async_encoder</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>encoder</key>
+      <value>enc</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(624, 171)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>fec_async_encoder_0</value>
+    </param>
+    <param>
+      <key>mtu</key>
+      <value>1500</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>packed</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>rev_pack</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>rev_unpack</key>
+      <value>False</value>
+    </param>
+  </block>
+  <connection>
+    <source_block_id>blocks_message_strobe_0</source_block_id>
+    <sink_block_id>blocks_random_pdu_0</sink_block_id>
+    <source_key>strobe</source_key>
+    <sink_key>generate</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_random_pdu_0</source_block_id>
+    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>in</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>digital_crc32_async_bb_1</source_block_id>
+    <sink_block_id>blocks_message_debug_0</sink_block_id>
+    <source_key>out</source_key>
+    <sink_key>print_pdu</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>digital_crc32_async_bb_1</source_block_id>
+    <sink_block_id>fec_async_encoder_0</sink_block_id>
+    <source_key>out</source_key>
+    <sink_key>in</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>fec_async_encoder_0</source_block_id>
+    <sink_block_id>blocks_message_debug_0</sink_block_id>
+    <source_key>out</source_key>
+    <sink_key>print_pdu</sink_key>
+  </connection>
+</flow_graph>
diff --git a/gr-digital/examples/packet/tx_stage3.grc 
b/gr-digital/examples/packet/tx_stage3.grc
new file mode 100644
index 0000000..5f7c161
--- /dev/null
+++ b/gr-digital/examples/packet/tx_stage3.grc
@@ -0,0 +1,445 @@
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.10'?>
+<flow_graph>
+  <timestamp>Sun Apr 10 12:10:29 2016</timestamp>
+  <block>
+    <key>options</key>
+    <param>
+      <key>author</key>
+      <value></value>
+    </param>
+    <param>
+      <key>window_size</key>
+      <value></value>
+    </param>
+    <param>
+      <key>category</key>
+      <value>Custom</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>description</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(8, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>generate_options</key>
+      <value>qt_gui</value>
+    </param>
+    <param>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tx_stage3</value>
+    </param>
+    <param>
+      <key>max_nouts</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>qt_qss_theme</key>
+      <value></value>
+    </param>
+    <param>
+      <key>realtime_scheduling</key>
+      <value></value>
+    </param>
+    <param>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
+    </param>
+    <param>
+      <key>run_options</key>
+      <value>prompt</value>
+    </param>
+    <param>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>thread_safe_setters</key>
+      <value></value>
+    </param>
+    <param>
+      <key>title</key>
+      <value></value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(256, 275)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>bps</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>2</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_packet_formatter_default</key>
+    <param>
+      <key>access_code</key>
+      <value>digital.packet_utils.default_access_code</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(32, 211)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>formatter</value>
+    </param>
+    <param>
+      <key>threshold</key>
+      <value>thresh</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(256, 211)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>formatter</value>
+    </param>
+    <param>
+      <key>value</key>
+      
<value>digital.packet_formatter_counter(digital.packet_utils.default_access_code,
 thresh, bps)</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(32, 291)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>thresh</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>3</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_message_debug</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(920, 57)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_message_debug_0</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_message_strobe</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(32, 107)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_message_strobe_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>msg</key>
+      <value>pmt.PMT_T</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>period</key>
+      <value>2000</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_random_pdu</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>mask</key>
+      <value>0xff</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(216, 91)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_random_pdu_0</value>
+    </param>
+    <param>
+      <key>length_modulo</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>maxsize</key>
+      <value>50</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minsize</key>
+      <value>15</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>digital_crc32_async_bb</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(432, 115)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>digital_crc32_async_bb_1</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>check</key>
+      <value>False</value>
+    </param>
+  </block>
+  <block>
+    <key>digital_packet_format_async</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>formatter</key>
+      <value>formatter</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(624, 105)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>digital_packet_format_async_1</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+  </block>
+  <connection>
+    <source_block_id>blocks_message_strobe_0</source_block_id>
+    <sink_block_id>blocks_random_pdu_0</sink_block_id>
+    <source_key>strobe</source_key>
+    <sink_key>generate</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>blocks_random_pdu_0</source_block_id>
+    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>in</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>digital_crc32_async_bb_1</source_block_id>
+    <sink_block_id>digital_packet_format_async_1</sink_block_id>
+    <source_key>out</source_key>
+    <sink_key>in</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>digital_packet_format_async_1</source_block_id>
+    <sink_block_id>blocks_message_debug_0</sink_block_id>
+    <source_key>header</source_key>
+    <sink_key>print_pdu</sink_key>
+  </connection>
+  <connection>
+    <source_block_id>digital_packet_format_async_1</source_block_id>
+    <sink_block_id>blocks_message_debug_0</sink_block_id>
+    <source_key>payload</source_key>
+    <sink_key>print_pdu</sink_key>
+  </connection>
+</flow_graph>
diff --git a/gr-digital/examples/packet/packet_tx.grc 
b/gr-digital/examples/packet/tx_stage4.grc
similarity index 64%
copy from gr-digital/examples/packet/packet_tx.grc
copy to gr-digital/examples/packet/tx_stage4.grc
index a03df91..fc56f47 100644
--- a/gr-digital/examples/packet/packet_tx.grc
+++ b/gr-digital/examples/packet/tx_stage4.grc
@@ -1,7 +1,7 @@
 <?xml version='1.0' encoding='utf-8'?>
 <?grc format='1' created='3.7.10'?>
 <flow_graph>
-  <timestamp>Thu Mar 10 17:16:22 2016</timestamp>
+  <timestamp>Sun Apr 10 12:10:29 2016</timestamp>
   <block>
     <key>options</key>
     <param>
@@ -14,7 +14,7 @@
     </param>
     <param>
       <key>category</key>
-      <value>Packet Operators</value>
+      <value>Custom</value>
     </param>
     <param>
       <key>comment</key>
@@ -38,7 +38,7 @@
     </param>
     <param>
       <key>generate_options</key>
-      <value>hb</value>
+      <value>qt_gui</value>
     </param>
     <param>
       <key>hier_block_src_path</key>
@@ -46,7 +46,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>packet_tx</value>
+      <value>tx_stage4</value>
     </param>
     <param>
       <key>max_nouts</key>
@@ -89,11 +89,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(680, 435)</value>
+      <value>(272, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -101,34 +101,30 @@
     </param>
     <param>
       <key>id</key>
-      <value>nfilts</value>
+      <value>bps</value>
     </param>
     <param>
       <key>value</key>
-      <value>32</value>
+      <value>pld_const.bits_per_symbol()</value>
     </param>
   </block>
   <block>
-    <key>blocks_pdu_to_tagged_stream</key>
+    <key>variable_packet_formatter_default</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>access_code</key>
+      <value>digital.packet_utils.default_access_code</value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(320, 251)</value>
+      <value>(400, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -136,38 +132,53 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
+      <value>formatter</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>threshold</key>
+      <value>thresh</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>_enabled</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_coordinate</key>
+      <value>(624, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>formatter</value>
+    </param>
+    <param>
+      <key>value</key>
+      
<value>digital.packet_formatter_counter(digital.packet_utils.default_access_code,
 thresh, bps)</value>
+    </param>
   </block>
   <block>
-    <key>blocks_pdu_to_tagged_stream</key>
+    <key>variable_constellation</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>dims</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -175,7 +186,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(320, 179)</value>
+      <value>(816, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -183,58 +194,46 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0_0</value>
+      <value>hdr_const</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>precision</key>
+      <value>8</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
   </block>
   <block>
-    <key>blocks_repack_bits_bb</key>
-    <param>
-      <key>k</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>l</key>
-      <value>hdr_const.bits_per_symbol()</value>
-    </param>
+    <key>variable_constellation</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>dims</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
-    </param>
-    <param>
       <key>_coordinate</key>
-      <value>(544, 171)</value>
+      <value>(976, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -242,35 +241,54 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
+      <value>pld_const</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>precision</key>
+      <value>8</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
   </block>
   <block>
-    <key>blocks_repack_bits_bb</key>
+    <key>variable</key>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>l</key>
-      <value>pld_const.bits_per_symbol()</value>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(192, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>thresh</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>3</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_message_strobe</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -288,12 +306,8 @@
       <value>True</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
-    </param>
-    <param>
       <key>_coordinate</key>
-      <value>(544, 243)</value>
+      <value>(24, 99)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -301,27 +315,27 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
-    </param>
-    <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <value>blocks_message_strobe_0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
+      <key>msg</key>
+      <value>pmt.PMT_T</value>
+    </param>
+    <param>
       <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>period</key>
+      <value>1000</value>
     </param>
   </block>
   <block>
-    <key>blocks_tagged_stream_multiply_length</key>
+    <key>blocks_pdu_to_tagged_stream</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -340,7 +354,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(936, 369)</value>
+      <value>(312, 291)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -348,18 +362,14 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_tagged_stream_multiply_length_0</value>
+      <value>blocks_pdu_to_tagged_stream_0</value>
     </param>
     <param>
       <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>c</key>
-      <value>sps</value>
+      <value>byte</value>
     </param>
     <param>
-      <key>lengthtagname</key>
+      <key>tag</key>
       <value>packet_len</value>
     </param>
     <param>
@@ -370,13 +380,9 @@
       <key>minoutbuf</key>
       <value>0</value>
     </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
   </block>
   <block>
-    <key>blocks_tagged_stream_mux</key>
+    <key>blocks_pdu_to_tagged_stream</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -395,7 +401,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(216, 353)</value>
+      <value>(312, 219)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -403,14 +409,14 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_tagged_stream_mux_0</value>
+      <value>blocks_pdu_to_tagged_stream_0_0</value>
     </param>
     <param>
       <key>type</key>
-      <value>complex</value>
+      <value>byte</value>
     </param>
     <param>
-      <key>lengthtagname</key>
+      <key>tag</key>
       <value>packet_len</value>
     </param>
     <param>
@@ -421,26 +427,18 @@
       <key>minoutbuf</key>
       <value>0</value>
     </param>
-    <param>
-      <key>ninputs</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>tag_preserve_head_pos</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
   </block>
   <block>
-    <key>digital_burst_shaper_xx</key>
+    <key>blocks_random_pdu</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>mask</key>
+      <value>0xff</value>
+    </param>
+    <param>
       <key>comment</key>
       <value></value>
     </param>
@@ -454,7 +452,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(448, 331)</value>
+      <value>(208, 83)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -462,43 +460,39 @@
     </param>
     <param>
       <key>id</key>
-      <value>digital_burst_shaper_xx_0</value>
+      <value>blocks_random_pdu_0</value>
     </param>
     <param>
-      <key>insert_phasing</key>
-      <value>True</value>
+      <key>length_modulo</key>
+      <value>1</value>
     </param>
     <param>
-      <key>length_tag_name</key>
-      <value>packet_len</value>
+      <key>maxsize</key>
+      <value>50</value>
     </param>
     <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>post_padding</key>
-      <value>20</value>
+      <key>minsize</key>
+      <value>15</value>
     </param>
     <param>
-      <key>pre_padding</key>
-      <value>20</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>k</key>
+      <value>8</value>
     </param>
     <param>
-      <key>window</key>
-      <value>firdes.window(firdes.WIN_HANN, 20, 0)</value>
+      <key>l</key>
+      <value>hdr_const.bits_per_symbol()</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -512,16 +506,16 @@
       <value></value>
     </param>
     <param>
-      <key>dimension</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
+      <key>endianness</key>
+      <value>gr.GR_MSB_FIRST</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(872, 171)</value>
+      <value>(536, 211)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -529,11 +523,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0</value>
+      <value>blocks_repack_bits_bb_0</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>len_tag_key</key>
+      <value>packet_len</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -544,20 +538,20 @@
       <value>0</value>
     </param>
     <param>
-      <key>num_ports</key>
-      <value>1</value>
+      <key>align_output</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>k</key>
+      <value>8</value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>hdr_const.points()</value>
+      <key>l</key>
+      <value>pld_const.bits_per_symbol()</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -571,16 +565,16 @@
       <value></value>
     </param>
     <param>
-      <key>dimension</key>
-      <value>1</value>
-    </param>
-    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
+      <key>endianness</key>
+      <value>gr.GR_MSB_FIRST</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(872, 243)</value>
+      <value>(536, 283)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -588,11 +582,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0_0</value>
+      <value>blocks_repack_bits_bb_0_0</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>len_tag_key</key>
+      <value>packet_len</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -603,20 +597,12 @@
       <value>0</value>
     </param>
     <param>
-      <key>num_ports</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>out_type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>symbol_table</key>
-      <value>pld_const.points()</value>
+      <key>align_output</key>
+      <value>False</value>
     </param>
   </block>
   <block>
-    <key>digital_crc32_async_bb</key>
+    <key>blocks_tagged_stream_mux</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -635,15 +621,23 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(312, 107)</value>
+      <value>(224, 401)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
     <param>
       <key>id</key>
-      <value>digital_crc32_async_bb_1</value>
+      <value>blocks_tagged_stream_mux_0</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>lengthtagname</key>
+      <value>packet_len</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -654,12 +648,20 @@
       <value>0</value>
     </param>
     <param>
-      <key>check</key>
-      <value>False</value>
+      <key>ninputs</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>tag_preserve_head_pos</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
     </param>
   </block>
   <block>
-    <key>digital_map_bb</key>
+    <key>digital_chunks_to_symbols_xx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -673,12 +675,16 @@
       <value></value>
     </param>
     <param>
+      <key>dimension</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(744, 179)</value>
+      <value>(864, 211)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -686,11 +692,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>digital_map_bb_1</value>
+      <value>digital_chunks_to_symbols_xx_0</value>
     </param>
     <param>
-      <key>map</key>
-      <value>hdr_const.pre_diff_code()</value>
+      <key>in_type</key>
+      <value>byte</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -700,9 +706,21 @@
       <key>minoutbuf</key>
       <value>0</value>
     </param>
+    <param>
+      <key>num_ports</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>out_type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>symbol_table</key>
+      <value>hdr_const.points()</value>
+    </param>
   </block>
   <block>
-    <key>digital_map_bb</key>
+    <key>digital_chunks_to_symbols_xx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -716,12 +734,16 @@
       <value></value>
     </param>
     <param>
+      <key>dimension</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(744, 251)</value>
+      <value>(864, 283)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -729,11 +751,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>digital_map_bb_1_0</value>
+      <value>digital_chunks_to_symbols_xx_0_0</value>
     </param>
     <param>
-      <key>map</key>
-      <value>pld_const.pre_diff_code()</value>
+      <key>in_type</key>
+      <value>byte</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -743,9 +765,21 @@
       <key>minoutbuf</key>
       <value>0</value>
     </param>
+    <param>
+      <key>num_ports</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>out_type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>symbol_table</key>
+      <value>pld_const.points()</value>
+    </param>
   </block>
   <block>
-    <key>digital_packet_format_async</key>
+    <key>digital_crc32_async_bb</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -763,12 +797,8 @@
       <value>True</value>
     </param>
     <param>
-      <key>formatter</key>
-      <value>formatter</value>
-    </param>
-    <param>
       <key>_coordinate</key>
-      <value>(64, 201)</value>
+      <value>(424, 107)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -776,7 +806,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>digital_packet_format_async_1</value>
+      <value>digital_crc32_async_bb_1</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -786,9 +816,13 @@
       <key>minoutbuf</key>
       <value>0</value>
     </param>
+    <param>
+      <key>check</key>
+      <value>False</value>
+    </param>
   </block>
   <block>
-    <key>parameter</key>
+    <key>digital_map_bb</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -798,12 +832,16 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(192, 11)</value>
+      <value>(736, 219)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -811,27 +849,23 @@
     </param>
     <param>
       <key>id</key>
-      <value>enc</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>FEC encoder</value>
+      <value>digital_map_bb_1</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>map</key>
+      <value>hdr_const.pre_diff_code()</value>
     </param>
     <param>
-      <key>type</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>value</key>
-      <value> fec.dummy_encoder_make(8000)</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
   </block>
   <block>
-    <key>fec_async_encoder</key>
+    <key>digital_map_bb</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -849,24 +883,20 @@
       <value>True</value>
     </param>
     <param>
-      <key>encoder</key>
-      <value>enc</value>
-    </param>
-    <param>
       <key>_coordinate</key>
-      <value>(64, 99)</value>
+      <value>(736, 291)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
     <param>
       <key>id</key>
-      <value>fec_async_encoder_0</value>
+      <value>digital_map_bb_1_0</value>
     </param>
     <param>
-      <key>mtu</key>
-      <value>1500</value>
+      <key>map</key>
+      <value>pld_const.pre_diff_code()</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -876,21 +906,9 @@
       <key>minoutbuf</key>
       <value>0</value>
     </param>
-    <param>
-      <key>packed</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>rev_pack</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>rev_unpack</key>
-      <value>False</value>
-    </param>
   </block>
   <block>
-    <key>parameter</key>
+    <key>digital_packet_format_async</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -900,12 +918,20 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
+      <key>formatter</key>
+      <value>formatter</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(728, 11)</value>
+      <value>(64, 249)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -913,31 +939,19 @@
     </param>
     <param>
       <key>id</key>
-      <value>formatter</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Packet Formatter</value>
-    </param>
-    <param>
-      <key>short_id</key>
-      <value></value>
+      <value>digital_packet_format_async_1</value>
     </param>
     <param>
-      <key>type</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>value</key>
-      
<value>digital.packet_formatter_default(digital.packet_utils.default_access_code)</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
   </block>
   <block>
-    <key>parameter</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
+    <key>virtual_sink</key>
     <param>
       <key>comment</key>
       <value></value>
@@ -948,7 +962,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(376, 11)</value>
+      <value>(1048, 219)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -956,23 +970,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>hdr_const</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Header constellation</value>
-    </param>
-    <param>
-      <key>short_id</key>
-      <value></value>
-    </param>
-    <param>
-      <key>type</key>
-      <value></value>
+      <value>mod_header</value>
     </param>
     <param>
-      <key>value</key>
-      <value>digital.constellation_calcdist((digital.psk_2()[0]), 
(digital.psk_2()[1]), 2, 1).base()</value>
+      <key>stream_id</key>
+      <value>Mod Header</value>
     </param>
   </block>
   <block>
@@ -987,7 +989,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1080, 179)</value>
+      <value>(1048, 291)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -995,44 +997,45 @@
     </param>
     <param>
       <key>id</key>
-      <value>mod_header</value>
+      <value>mod_payload</value>
     </param>
     <param>
       <key>stream_id</key>
-      <value>Mod Header</value>
+      <value>Mod Payload</value>
     </param>
   </block>
   <block>
-    <key>virtual_sink</key>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1080, 251)</value>
+      <key>bw</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>fc</key>
       <value>0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>mod_payload</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
-  </block>
-  <block>
-    <key>pad_sink</key>
     <param>
-      <key>comment</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
@@ -1040,189 +1043,268 @@
       <value>True</value>
     </param>
     <param>
+      <key>fftsize</key>
+      <value>1024</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1224, 379)</value>
+      <value>(1056, 443)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>id</key>
-      <value>pad_sink_0</value>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label</key>
-      <value>out</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>num_streams</key>
-      <value>1</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>optional</key>
-      <value>False</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>vlen</key>
+      <key>width1</key>
       <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>pad_source</key>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(504, 107)</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>id</key>
-      <value>pad_source_0</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>label</key>
-      <value>in</value>
+      <key>color2</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>num_streams</key>
+      <key>width2</key>
       <value>1</value>
     </param>
     <param>
-      <key>optional</key>
-      <value>False</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>message</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>vlen</key>
+      <key>label3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width3</key>
       <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(680, 339)</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>rrate</key>
-      <value>sps</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>samp_delay</key>
-      <value>0</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>atten</key>
-      <value>100</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>taps</key>
-      <value>psf_taps</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>type</key>
-      <value>ccf</value>
+      <key>label7</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(552, 11)</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>id</key>
-      <value>pld_const</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Payload constellation</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>short_id</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
+      <key>width9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>name</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>nconnections</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>showports</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>freqhalf</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_level</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>""</value>
+    </param>
+    <param>
       <key>type</key>
-      <value></value>
+      <value>complex</value>
     </param>
     <param>
-      <key>value</key>
-      <value>digital.constellation_calcdist((digital.psk_2()[0]), 
(digital.psk_2()[1]), 2, 1).base()</value>
+      <key>update_time</key>
+      <value>0.10</value>
+    </param>
+    <param>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+    </param>
+    <param>
+      <key>label</key>
+      <value>Relative Gain</value>
+    </param>
+    <param>
+      <key>ymax</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-140</value>
+    </param>
+    <param>
+      <key>units</key>
+      <value>dB</value>
     </param>
   </block>
   <block>
-    <key>parameter</key>
+    <key>qtgui_time_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
+    </param>
     <param>
       <key>alias</key>
       <value></value>
@@ -1232,36 +1314,348 @@
       <value></value>
     </param>
     <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>entags</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1064, 11)</value>
+      <value>(1056, 363)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>id</key>
-      <value>psf_taps</value>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Pulse Shape Filter</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>short_id</key>
+      <key>alpha1</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color1</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>type</key>
+      <key>marker1</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha10</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color10</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>[0,]</value>
+      <key>marker10</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha2</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color2</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label2</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker2</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha3</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>label3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker3</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha4</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color4</key>
+      <value>"black"</value>
+    </param>
+    <param>
+      <key>label4</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker4</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha5</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker5</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width5</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha6</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color6</key>
+      <value>"magenta"</value>
+    </param>
+    <param>
+      <key>label6</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker6</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"yellow"</value>
+    </param>
+    <param>
+      <key>label7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker7</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha8</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color8</key>
+      <value>"dark red"</value>
+    </param>
+    <param>
+      <key>label8</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker8</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha9</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
+      <key>label9</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker9</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>name</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>nconnections</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>size</key>
+      <value>400</value>
+    </param>
+    <param>
+      <key>srate</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>tr_delay</key>
+      <value>15</value>
+    </param>
+    <param>
+      <key>tr_level</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
+    </param>
+    <param>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>packet_len</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>update_time</key>
+      <value>0.10</value>
+    </param>
+    <param>
+      <key>ylabel</key>
+      <value>Amplitude</value>
+    </param>
+    <param>
+      <key>yunit</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>ymax</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
   </block>
   <block>
@@ -1276,7 +1670,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(16, 331)</value>
+      <value>(24, 379)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1303,7 +1697,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(16, 379)</value>
+      <value>(24, 427)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1319,7 +1713,7 @@
     </param>
   </block>
   <block>
-    <key>parameter</key>
+    <key>qtgui_tab_widget</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -1334,7 +1728,11 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(904, 11)</value>
+      <value>(1056, 531)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1342,26 +1740,100 @@
     </param>
     <param>
       <key>id</key>
-      <value>sps</value>
+      <value>tab</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Samples per Symbol</value>
+      <key>label0</key>
+      <value>Time</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>label1</key>
+      <value>Freq</value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>label10</key>
+      <value>Tab 10</value>
     </param>
     <param>
-      <key>value</key>
+      <key>label11</key>
+      <value>Tab 11</value>
+    </param>
+    <param>
+      <key>label12</key>
+      <value>Tab 12</value>
+    </param>
+    <param>
+      <key>label13</key>
+      <value>Tab 13</value>
+    </param>
+    <param>
+      <key>label14</key>
+      <value>Tab 14</value>
+    </param>
+    <param>
+      <key>label15</key>
+      <value>Tab 15</value>
+    </param>
+    <param>
+      <key>label16</key>
+      <value>Tab 16</value>
+    </param>
+    <param>
+      <key>label17</key>
+      <value>Tab 17</value>
+    </param>
+    <param>
+      <key>label18</key>
+      <value>Tab 18</value>
+    </param>
+    <param>
+      <key>label19</key>
+      <value>Tab 19</value>
+    </param>
+    <param>
+      <key>label2</key>
+      <value>Tab 2</value>
+    </param>
+    <param>
+      <key>label3</key>
+      <value>Tab 3</value>
+    </param>
+    <param>
+      <key>label4</key>
+      <value>Tab 4</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value>Tab 5</value>
+    </param>
+    <param>
+      <key>label6</key>
+      <value>Tab 6</value>
+    </param>
+    <param>
+      <key>label7</key>
+      <value>Tab 7</value>
+    </param>
+    <param>
+      <key>label8</key>
+      <value>Tab 8</value>
+    </param>
+    <param>
+      <key>label9</key>
+      <value>Tab 9</value>
+    </param>
+    <param>
+      <key>num_tabs</key>
       <value>2</value>
     </param>
   </block>
   <connection>
+    <source_block_id>blocks_message_strobe_0</source_block_id>
+    <sink_block_id>blocks_random_pdu_0</sink_block_id>
+    <source_key>strobe</source_key>
+    <sink_key>generate</sink_key>
+  </connection>
+  <connection>
     <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
     <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
     <source_key>0</source_key>
@@ -1374,6 +1846,12 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
+    <source_block_id>blocks_random_pdu_0</source_block_id>
+    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>in</sink_key>
+  </connection>
+  <connection>
     <source_block_id>blocks_repack_bits_bb_0</source_block_id>
     <sink_block_id>digital_map_bb_1</sink_block_id>
     <source_key>0</source_key>
@@ -1386,20 +1864,14 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_tagged_stream_multiply_length_0</source_block_id>
-    <sink_block_id>pad_sink_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
     <source_block_id>blocks_tagged_stream_mux_0</source_block_id>
-    <sink_block_id>digital_burst_shaper_xx_0</sink_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_burst_shaper_xx_0</source_block_id>
-    <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
+    <source_block_id>blocks_tagged_stream_mux_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -1417,7 +1889,7 @@
   </connection>
   <connection>
     <source_block_id>digital_crc32_async_bb_1</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
+    <sink_block_id>digital_packet_format_async_1</sink_block_id>
     <source_key>out</source_key>
     <sink_key>in</sink_key>
   </connection>
@@ -1446,24 +1918,6 @@
     <sink_key>pdus</sink_key>
   </connection>
   <connection>
-    <source_block_id>fec_async_encoder_0</source_block_id>
-    <sink_block_id>digital_packet_format_async_1</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>pad_source_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>blocks_tagged_stream_multiply_length_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
     <source_block_id>rx_mod_header</source_block_id>
     <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
     <source_key>0</source_key>
diff --git a/gr-digital/examples/packet/packet_tx.grc 
b/gr-digital/examples/packet/tx_stage5.grc
similarity index 64%
copy from gr-digital/examples/packet/packet_tx.grc
copy to gr-digital/examples/packet/tx_stage5.grc
index a03df91..5efd4ee 100644
--- a/gr-digital/examples/packet/packet_tx.grc
+++ b/gr-digital/examples/packet/tx_stage5.grc
@@ -1,7 +1,7 @@
 <?xml version='1.0' encoding='utf-8'?>
 <?grc format='1' created='3.7.10'?>
 <flow_graph>
-  <timestamp>Thu Mar 10 17:16:22 2016</timestamp>
+  <timestamp>Sun Apr 10 12:10:29 2016</timestamp>
   <block>
     <key>options</key>
     <param>
@@ -14,7 +14,7 @@
     </param>
     <param>
       <key>category</key>
-      <value>Packet Operators</value>
+      <value>Custom</value>
     </param>
     <param>
       <key>comment</key>
@@ -38,7 +38,7 @@
     </param>
     <param>
       <key>generate_options</key>
-      <value>hb</value>
+      <value>qt_gui</value>
     </param>
     <param>
       <key>hier_block_src_path</key>
@@ -46,7 +46,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>packet_tx</value>
+      <value>tx_stage5</value>
     </param>
     <param>
       <key>max_nouts</key>
@@ -89,11 +89,190 @@
     </param>
     <param>
       <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(272, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>bps</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>pld_const.bits_per_symbol()</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_packet_formatter_default</key>
+    <param>
+      <key>access_code</key>
+      <value>digital.packet_utils.default_access_code</value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(400, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>formatter</value>
+    </param>
+    <param>
+      <key>threshold</key>
+      <value>thresh</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(624, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>formatter</value>
+    </param>
+    <param>
+      <key>value</key>
+      
<value>digital.packet_formatter_counter(digital.packet_utils.default_access_code,
 thresh, bps)</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_constellation</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
+    </param>
+    <param>
+      <key>dims</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(816, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>hdr_const</value>
+    </param>
+    <param>
+      <key>rot_sym</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
+    </param>
+    <param>
+      <key>precision</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_constellation</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
+    </param>
+    <param>
+      <key>dims</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(680, 435)</value>
+      <value>(976, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>pld_const</value>
+    </param>
+    <param>
+      <key>rot_sym</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
+    </param>
+    <param>
+      <key>precision</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(192, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -101,11 +280,58 @@
     </param>
     <param>
       <key>id</key>
-      <value>nfilts</value>
+      <value>thresh</value>
     </param>
     <param>
       <key>value</key>
-      <value>32</value>
+      <value>3</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_message_strobe</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(24, 99)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>blocks_message_strobe_0</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>msg</key>
+      <value>pmt.PMT_T</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>period</key>
+      <value>1000</value>
     </param>
   </block>
   <block>
@@ -128,7 +354,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(320, 251)</value>
+      <value>(312, 291)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -175,7 +401,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(320, 179)</value>
+      <value>(312, 219)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -203,20 +429,16 @@
     </param>
   </block>
   <block>
-    <key>blocks_repack_bits_bb</key>
-    <param>
-      <key>k</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>l</key>
-      <value>hdr_const.bits_per_symbol()</value>
-    </param>
+    <key>blocks_random_pdu</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>mask</key>
+      <value>0xff</value>
+    </param>
+    <param>
       <key>comment</key>
       <value></value>
     </param>
@@ -229,12 +451,8 @@
       <value>True</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
-    </param>
-    <param>
       <key>_coordinate</key>
-      <value>(544, 171)</value>
+      <value>(208, 83)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -242,23 +460,27 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
+      <value>blocks_random_pdu_0</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>length_modulo</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>maxsize</key>
+      <value>50</value>
     </param>
     <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>minsize</key>
+      <value>15</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
   </block>
   <block>
@@ -269,7 +491,7 @@
     </param>
     <param>
       <key>l</key>
-      <value>pld_const.bits_per_symbol()</value>
+      <value>hdr_const.bits_per_symbol()</value>
     </param>
     <param>
       <key>alias</key>
@@ -293,7 +515,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(544, 243)</value>
+      <value>(536, 211)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -301,7 +523,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
+      <value>blocks_repack_bits_bb_0</value>
     </param>
     <param>
       <key>len_tag_key</key>
@@ -321,7 +543,15 @@
     </param>
   </block>
   <block>
-    <key>blocks_tagged_stream_multiply_length</key>
+    <key>blocks_repack_bits_bb</key>
+    <param>
+      <key>k</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>l</key>
+      <value>pld_const.bits_per_symbol()</value>
+    </param>
     <param>
       <key>alias</key>
       <value></value>
@@ -339,8 +569,12 @@
       <value>True</value>
     </param>
     <param>
+      <key>endianness</key>
+      <value>gr.GR_MSB_FIRST</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(936, 369)</value>
+      <value>(536, 283)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -348,18 +582,10 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_tagged_stream_multiply_length_0</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>c</key>
-      <value>sps</value>
+      <value>blocks_repack_bits_bb_0_0</value>
     </param>
     <param>
-      <key>lengthtagname</key>
+      <key>len_tag_key</key>
       <value>packet_len</value>
     </param>
     <param>
@@ -371,8 +597,8 @@
       <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>align_output</key>
+      <value>False</value>
     </param>
   </block>
   <block>
@@ -395,7 +621,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(216, 353)</value>
+      <value>(224, 401)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -438,7 +664,7 @@
     <key>digital_burst_shaper_xx</key>
     <param>
       <key>alias</key>
-      <value></value>
+      <value>burst_shaper0</value>
     </param>
     <param>
       <key>comment</key>
@@ -450,11 +676,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(448, 331)</value>
+      <value>(456, 379)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -482,11 +708,11 @@
     </param>
     <param>
       <key>post_padding</key>
-      <value>20</value>
+      <value>10</value>
     </param>
     <param>
       <key>pre_padding</key>
-      <value>20</value>
+      <value>10</value>
     </param>
     <param>
       <key>type</key>
@@ -494,7 +720,7 @@
     </param>
     <param>
       <key>window</key>
-      <value>firdes.window(firdes.WIN_HANN, 20, 0)</value>
+      <value>firdes.window(firdes.WIN_HANN, 50, 0)</value>
     </param>
   </block>
   <block>
@@ -521,7 +747,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(872, 171)</value>
+      <value>(864, 211)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -580,7 +806,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(872, 243)</value>
+      <value>(864, 283)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -635,11 +861,11 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(312, 107)</value>
+      <value>(424, 107)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
     <param>
       <key>id</key>
@@ -678,7 +904,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(744, 179)</value>
+      <value>(736, 219)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -721,7 +947,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(744, 251)</value>
+      <value>(736, 291)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -768,7 +994,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(64, 201)</value>
+      <value>(64, 249)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -788,11 +1014,7 @@
     </param>
   </block>
   <block>
-    <key>parameter</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
+    <key>virtual_sink</key>
     <param>
       <key>comment</key>
       <value></value>
@@ -803,7 +1025,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(192, 11)</value>
+      <value>(1048, 219)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -811,36 +1033,71 @@
     </param>
     <param>
       <key>id</key>
-      <value>enc</value>
+      <value>mod_header</value>
     </param>
     <param>
-      <key>label</key>
-      <value>FEC encoder</value>
+      <key>stream_id</key>
+      <value>Mod Header</value>
     </param>
+  </block>
+  <block>
+    <key>virtual_sink</key>
     <param>
-      <key>short_id</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value> fec.dummy_encoder_make(8000)</value>
+      <key>_coordinate</key>
+      <value>(1048, 291)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>mod_payload</value>
+    </param>
+    <param>
+      <key>stream_id</key>
+      <value>Mod Payload</value>
     </param>
   </block>
   <block>
-    <key>fec_async_encoder</key>
+    <key>qtgui_freq_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>average</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>bw</key>
+      <value>1</value>
+    </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>fc</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -849,419 +1106,619 @@
       <value>True</value>
     </param>
     <param>
-      <key>encoder</key>
-      <value>enc</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(64, 99)</value>
+      <value>(1056, 443)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
+    </param>
+    <param>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
       <key>id</key>
-      <value>fec_async_encoder_0</value>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>mtu</key>
-      <value>1500</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>packed</key>
-      <value>True</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>rev_pack</key>
-      <value>False</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>rev_unpack</key>
-      <value>False</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(728, 11)</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>id</key>
-      <value>formatter</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>Packet Formatter</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>type</key>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>value</key>
-      
<value>digital.packet_formatter_default(digital.packet_utils.default_access_code)</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>color4</key>
+      <value>"black"</value>
+    </param>
+    <param>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(376, 11)</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>id</key>
-      <value>hdr_const</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>Header constellation</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>type</key>
+      <key>color6</key>
+      <value>"magenta"</value>
+    </param>
+    <param>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>digital.constellation_calcdist((digital.psk_2()[0]), 
(digital.psk_2()[1]), 2, 1).base()</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1080, 179)</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>id</key>
-      <value>mod_header</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>comment</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1080, 251)</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
+      <key>label9</key>
+      <value></value>
+    </param>
+    <param>
+      <key>width9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>mod_payload</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <key>name</key>
+      <value>""</value>
     </param>
-  </block>
-  <block>
-    <key>pad_sink</key>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>showports</key>
       <value>True</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1224, 379)</value>
+      <key>freqhalf</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>pad_sink_0</value>
+      <key>tr_level</key>
+      <value>0.0</value>
+    </param>
+    <param>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
       <key>type</key>
       <value>complex</value>
     </param>
     <param>
+      <key>update_time</key>
+      <value>0.10</value>
+    </param>
+    <param>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+    </param>
+    <param>
       <key>label</key>
-      <value>out</value>
+      <value>Relative Gain</value>
     </param>
     <param>
-      <key>num_streams</key>
-      <value>1</value>
+      <key>ymax</key>
+      <value>10</value>
     </param>
     <param>
-      <key>optional</key>
-      <value>False</value>
+      <key>ymin</key>
+      <value>-140</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>units</key>
+      <value>dB</value>
     </param>
   </block>
   <block>
-    <key>pad_source</key>
+    <key>qtgui_time_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>entags</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(504, 107)</value>
+      <value>(1056, 363)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
+    </param>
+    <param>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
       <key>id</key>
-      <value>pad_source_0</value>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
-      <key>label</key>
-      <value>in</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>num_streams</key>
-      <value>1</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>optional</key>
-      <value>False</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>type</key>
-      <value>message</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>vlen</key>
+      <key>marker1</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style1</key>
       <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>color10</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(680, 339)</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>rrate</key>
-      <value>sps</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>samp_delay</key>
-      <value>0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>atten</key>
-      <value>100</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>taps</key>
-      <value>psf_taps</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>type</key>
-      <value>ccf</value>
+      <key>label3</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
-      <key>alias</key>
+      <key>marker3</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width3</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha4</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color4</key>
+      <value>"black"</value>
+    </param>
+    <param>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
+      <key>marker4</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width4</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha5</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(552, 11)</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>id</key>
-      <value>pld_const</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Payload constellation</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>short_id</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>type</key>
+      <key>marker6</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"yellow"</value>
+    </param>
+    <param>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>digital.constellation_calcdist((digital.psk_2()[0]), 
(digital.psk_2()[1]), 2, 1).base()</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
-  </block>
-  <block>
-    <key>parameter</key>
     <param>
-      <key>alias</key>
+      <key>style7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width7</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha8</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color8</key>
+      <value>"dark red"</value>
+    </param>
+    <param>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
+      <key>marker8</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width8</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha9</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1064, 11)</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>width9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>name</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>nconnections</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>size</key>
+      <value>400</value>
+    </param>
+    <param>
+      <key>srate</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>psf_taps</value>
+      <key>tr_delay</key>
+      <value>15</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Pulse Shape Filter</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
+    </param>
+    <param>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
+    </param>
+    <param>
+      <key>tr_tag</key>
+      <value>packet_len</value>
     </param>
     <param>
       <key>type</key>
-      <value></value>
+      <value>complex</value>
     </param>
     <param>
-      <key>value</key>
-      <value>[0,]</value>
+      <key>update_time</key>
+      <value>0.10</value>
+    </param>
+    <param>
+      <key>ylabel</key>
+      <value>Amplitude</value>
+    </param>
+    <param>
+      <key>yunit</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>ymax</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
   </block>
   <block>
@@ -1276,7 +1733,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(16, 331)</value>
+      <value>(24, 379)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1303,7 +1760,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(16, 379)</value>
+      <value>(24, 427)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1319,7 +1776,7 @@
     </param>
   </block>
   <block>
-    <key>parameter</key>
+    <key>qtgui_tab_widget</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -1334,7 +1791,11 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(904, 11)</value>
+      <value>(1056, 531)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1342,26 +1803,100 @@
     </param>
     <param>
       <key>id</key>
-      <value>sps</value>
+      <value>tab</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Samples per Symbol</value>
+      <key>label0</key>
+      <value>Time</value>
     </param>
     <param>
-      <key>short_id</key>
-      <value></value>
+      <key>label1</key>
+      <value>Freq</value>
     </param>
     <param>
-      <key>type</key>
-      <value>eng_float</value>
+      <key>label10</key>
+      <value>Tab 10</value>
     </param>
     <param>
-      <key>value</key>
+      <key>label11</key>
+      <value>Tab 11</value>
+    </param>
+    <param>
+      <key>label12</key>
+      <value>Tab 12</value>
+    </param>
+    <param>
+      <key>label13</key>
+      <value>Tab 13</value>
+    </param>
+    <param>
+      <key>label14</key>
+      <value>Tab 14</value>
+    </param>
+    <param>
+      <key>label15</key>
+      <value>Tab 15</value>
+    </param>
+    <param>
+      <key>label16</key>
+      <value>Tab 16</value>
+    </param>
+    <param>
+      <key>label17</key>
+      <value>Tab 17</value>
+    </param>
+    <param>
+      <key>label18</key>
+      <value>Tab 18</value>
+    </param>
+    <param>
+      <key>label19</key>
+      <value>Tab 19</value>
+    </param>
+    <param>
+      <key>label2</key>
+      <value>Tab 2</value>
+    </param>
+    <param>
+      <key>label3</key>
+      <value>Tab 3</value>
+    </param>
+    <param>
+      <key>label4</key>
+      <value>Tab 4</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value>Tab 5</value>
+    </param>
+    <param>
+      <key>label6</key>
+      <value>Tab 6</value>
+    </param>
+    <param>
+      <key>label7</key>
+      <value>Tab 7</value>
+    </param>
+    <param>
+      <key>label8</key>
+      <value>Tab 8</value>
+    </param>
+    <param>
+      <key>label9</key>
+      <value>Tab 9</value>
+    </param>
+    <param>
+      <key>num_tabs</key>
       <value>2</value>
     </param>
   </block>
   <connection>
+    <source_block_id>blocks_message_strobe_0</source_block_id>
+    <sink_block_id>blocks_random_pdu_0</sink_block_id>
+    <source_key>strobe</source_key>
+    <sink_key>generate</sink_key>
+  </connection>
+  <connection>
     <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
     <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
     <source_key>0</source_key>
@@ -1374,6 +1909,12 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
+    <source_block_id>blocks_random_pdu_0</source_block_id>
+    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>in</sink_key>
+  </connection>
+  <connection>
     <source_block_id>blocks_repack_bits_bb_0</source_block_id>
     <sink_block_id>digital_map_bb_1</sink_block_id>
     <source_key>0</source_key>
@@ -1386,20 +1927,20 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_tagged_stream_multiply_length_0</source_block_id>
-    <sink_block_id>pad_sink_0</sink_block_id>
+    <source_block_id>blocks_tagged_stream_mux_0</source_block_id>
+    <sink_block_id>digital_burst_shaper_xx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_tagged_stream_mux_0</source_block_id>
-    <sink_block_id>digital_burst_shaper_xx_0</sink_block_id>
+    <source_block_id>digital_burst_shaper_xx_0</source_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>digital_burst_shaper_xx_0</source_block_id>
-    <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -1417,7 +1958,7 @@
   </connection>
   <connection>
     <source_block_id>digital_crc32_async_bb_1</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
+    <sink_block_id>digital_packet_format_async_1</sink_block_id>
     <source_key>out</source_key>
     <sink_key>in</sink_key>
   </connection>
@@ -1446,24 +1987,6 @@
     <sink_key>pdus</sink_key>
   </connection>
   <connection>
-    <source_block_id>fec_async_encoder_0</source_block_id>
-    <sink_block_id>digital_packet_format_async_1</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>pad_source_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>blocks_tagged_stream_multiply_length_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
     <source_block_id>rx_mod_header</source_block_id>
     <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
     <source_key>0</source_key>
diff --git a/gr-digital/examples/packet/transmitter_sim.grc 
b/gr-digital/examples/packet/tx_stage6.grc
similarity index 64%
copy from gr-digital/examples/packet/transmitter_sim.grc
copy to gr-digital/examples/packet/tx_stage6.grc
index 8917396..af0546e 100644
--- a/gr-digital/examples/packet/transmitter_sim.grc
+++ b/gr-digital/examples/packet/tx_stage6.grc
@@ -1,23 +1,23 @@
-<?xml version='1.0' encoding='ASCII'?>
-<?grc format='1' created='3.7.8'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.10'?>
 <flow_graph>
-  <timestamp>Thu Dec  4 14:34:25 2014</timestamp>
+  <timestamp>Sun Apr 10 12:10:29 2016</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>parse_packet_header_soft</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>window_size</key>
+      <value></value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
+      <key>category</key>
+      <value>Custom</value>
     </param>
     <param>
-      <key>author</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -25,854 +25,884 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>2000,2000</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_coordinate</key>
+      <value>(8, 11)</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tx_stage6</value>
     </param>
     <param>
       <key>max_nouts</key>
       <value>0</value>
     </param>
     <param>
+      <key>qt_qss_theme</key>
+      <value></value>
+    </param>
+    <param>
       <key>realtime_scheduling</key>
       <value></value>
     </param>
     <param>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
+    </param>
+    <param>
+      <key>run_options</key>
+      <value>prompt</value>
+    </param>
+    <param>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>thread_safe_setters</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>title</key>
       <value></value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(8, 11)</value>
+      <value>(272, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>rate</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>bps</value>
     </param>
     <param>
       <key>value</key>
-      <value>2</value>
+      <value>pld_const.bits_per_symbol()</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1312, 819)</value>
+      <value>(936, 563)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>k</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>eb</value>
     </param>
     <param>
       <key>value</key>
-      <value>7</value>
+      <value>0.22</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1240, 819)</value>
+      <value>(888, 499)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>rep</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>filt_delay</value>
     </param>
     <param>
       <key>value</key>
-      <value>3</value>
+      <value>1+(taps_per_filt-1)/2</value>
     </param>
+  </block>
+  <block>
+    <key>variable_packet_formatter_default</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>access_code</key>
+      <value>digital.packet_utils.default_access_code</value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1216, 883)</value>
+      <value>(400, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>polys</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>formatter</value>
     </param>
     <param>
-      <key>value</key>
-      <value>[109, 79]</value>
+      <key>threshold</key>
+      <value>thresh</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>0</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1288, 883)</value>
+      <value>(624, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>eb</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>formatter</value>
     </param>
     <param>
       <key>value</key>
-      <value>0.22</value>
+      
<value>digital.packet_formatter_counter(digital.packet_utils.default_access_code,
 thresh, bps)</value>
     </param>
+  </block>
+  <block>
+    <key>variable_constellation</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
+    </param>
+    <param>
+      <key>dims</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1216, 67)</value>
+      <value>(816, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>nfilts</value>
+      <value>hdr_const</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>value</key>
-      <value>32</value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>precision</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1144, 67)</value>
+      <value>(864, 563)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>nfilts</value>
     </param>
     <param>
       <key>value</key>
-      <value>2</value>
+      <value>32</value>
     </param>
+  </block>
+  <block>
+    <key>variable_constellation</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
+    </param>
+    <param>
+      <key>dims</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1072, 67)</value>
+      <value>(976, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
     <param>
       <key>id</key>
-      <value>rx_mod_header</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>pld_const</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(16, 379)</value>
+      <key>precision</key>
+      <value>8</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
   </block>
   <block>
-    <key>virtual_source</key>
+    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>id</key>
-      <value>rx_mod_payload</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha</key>
+      <value>eb</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(16, 427)</value>
+      <value>(656, 499)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_mux</key>
+    <param>
+      <key>gain</key>
+      <value>nfilts</value>
+    </param>
     <param>
       <key>id</key>
-      <value>blocks_tagged_stream_mux_0</value>
+      <value>psf_taps</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>ntaps</key>
+      <value>15*sps*nfilts</value>
     </param>
     <param>
-      <key>ninputs</key>
-      <value>2</value>
+      <key>samp_rate</key>
+      <value>nfilts</value>
     </param>
     <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
+      <key>sym_rate</key>
+      <value>1.0</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>tag_preserve_head_pos</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(792, 563)</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>id</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>value</key>
+      <value>4</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(216, 400)</value>
+      <value>(792, 499)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>taps_per_filt</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>len(psf_taps)/nfilts</value>
+    </param>
   </block>
   <block>
-    <key>blocks_message_strobe</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>blocks_message_strobe_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
-      <key>msg</key>
-      <value>pmt.intern("TEST")</value>
+      <key>_coordinate</key>
+      <value>(192, 11)</value>
     </param>
     <param>
-      <key>period</key>
-      <value>100</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>id</key>
+      <value>thresh</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>value</key>
+      <value>3</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_message_strobe</key>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>comment</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(24, 83)</value>
+      <value>(24, 99)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>fec_async_encoder</key>
     <param>
       <key>id</key>
-      <value>fec_async_encoder_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>blocks_message_strobe_0</value>
     </param>
     <param>
-      <key>encoder</key>
-      <value>enc</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>packed</key>
-      <value>True</value>
+      <key>msg</key>
+      <value>pmt.PMT_T</value>
     </param>
     <param>
-      <key>rev_unpack</key>
-      <value>False</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rev_pack</key>
-      <value>False</value>
+      <key>period</key>
+      <value>1000</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_pdu_to_tagged_stream</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(80, 171)</value>
+      <value>(312, 291)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_crc32_async_bb</key>
     <param>
       <key>id</key>
-      <value>digital_crc32_async_bb_1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>blocks_pdu_to_tagged_stream_0</value>
     </param>
     <param>
-      <key>check</key>
-      <value>False</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
       <key>minoutbuf</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_pdu_to_tagged_stream</key>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(424, 91)</value>
+      <value>(312, 219)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_random_pdu</key>
     <param>
       <key>id</key>
-      <value>blocks_random_pdu_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>blocks_pdu_to_tagged_stream_0_0</value>
     </param>
     <param>
-      <key>minsize</key>
-      <value>50</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>maxsize</key>
-      <value>100</value>
+      <key>tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>mask</key>
-      <value>0xFF</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>length_modulo</key>
-      <value>2</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_random_pdu</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>mask</key>
+      <value>0xff</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(208, 67)</value>
+      <value>(208, 83)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
+      <value>blocks_random_pdu_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>length_modulo</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>maxsize</key>
+      <value>50</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>dim2</key>
-      <value>4</value>
+      <key>minsize</key>
+      <value>15</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_repack_bits_bb</key>
     <param>
       <key>k</key>
-      <value>k</value>
-    </param>
-    <param>
-      <key>rate</key>
-      <value>rate</value>
-    </param>
-    <param>
-      <key>polys</key>
-      <value>polys</value>
+      <value>8</value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>l</key>
+      <value>hdr_const.bits_per_symbol()</value>
     </param>
     <param>
-      <key>state_end</key>
-      <value>-1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>endianness</key>
+      <value>gr.GR_MSB_FIRST</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1384, 779)</value>
+      <value>(536, 211)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
+      <value>blocks_repack_bits_bb_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>len_tag_key</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>align_output</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>k</key>
+      <value>8</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>l</key>
+      <value>pld_const.bits_per_symbol()</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>prob</key>
-      <value>0.5</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>endianness</key>
+      <value>gr.GR_MSB_FIRST</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1184, 699)</value>
+      <value>(536, 283)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc</value>
+      <value>blocks_repack_bits_bb_0_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>len_tag_key</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>align_output</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_tagged_stream_mux</key>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>_coordinate</key>
+      <value>(224, 401)</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>id</key>
+      <value>blocks_tagged_stream_mux_0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1384, 603)</value>
+      <key>lengthtagname</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ninputs</key>
+      <value>2</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>tag_preserve_head_pos</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
+      <key>vlen</key>
       <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>digital_burst_shaper_xx</key>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>alias</key>
+      <value>burst_shaper0</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(992, 603)</value>
+      <value>(456, 379)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
+      <value>digital_burst_shaper_xx_0</value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>insert_phasing</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>length_tag_name</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>post_padding</key>
+      <value>10</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>pre_padding</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>complex</value>
+    </param>
+    <param>
+      <key>window</key>
+      <value>firdes.window(firdes.WIN_HANN, 50, 0)</value>
     </param>
+  </block>
+  <block>
+    <key>digital_chunks_to_symbols_xx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -882,44 +912,56 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>dimension</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(992, 683)</value>
+      <value>(864, 211)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc</value>
+      <value>digital_chunks_to_symbols_xx_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>in_type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
+      <key>num_ports</key>
       <value>1</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>out_type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>symbol_table</key>
+      <value>hdr_const.points()</value>
     </param>
+  </block>
+  <block>
+    <key>digital_chunks_to_symbols_xx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -929,60 +971,56 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1184, 603)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>noise</value>
+      <key>dimension</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Noise Amp</value>
+      <key>_coordinate</key>
+      <value>(864, 283)</value>
     </param>
     <param>
-      <key>value</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>0</value>
+      <key>id</key>
+      <value>digital_chunks_to_symbols_xx_0_0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>0.5</value>
+      <key>in_type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>num_ports</key>
+      <value>1</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>out_type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,0,1,1</value>
+      <key>symbol_table</key>
+      <value>pld_const.points()</value>
     </param>
+  </block>
+  <block>
+    <key>digital_crc32_async_bb</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -992,2222 +1030,1140 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(40, 627)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
-    <param>
-      <key>id</key>
-      <value>freq_offset</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Freq. Offset</value>
+      <key>_coordinate</key>
+      <value>(424, 107)</value>
     </param>
     <param>
-      <key>value</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>1</value>
+      <key>id</key>
+      <value>digital_crc32_async_bb_1</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>check</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>digital_map_bb</key>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,1,1,1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(152, 627)</value>
+      <value>(736, 219)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
       <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0_0</value>
+      <value>digital_map_bb_1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>map</key>
+      <value>hdr_const.pre_diff_code()</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>digital_map_bb</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(336, 211)</value>
+      <value>(736, 291)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
       <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
+      <value>digital_map_bb_1_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>map</key>
+      <value>pld_const.pre_diff_code()</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>digital_packet_format_async</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>formatter</key>
+      <value>formatter</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(336, 283)</value>
+      <value>(64, 249)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
       <key>id</key>
-      <value>digital_map_bb_1_0</value>
+      <value>digital_packet_format_async_1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_PLD.pre_diff_code()</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>virtual_sink</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(1048, 219)</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(760, 283)</value>
+      <key>id</key>
+      <value>mod_header</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>stream_id</key>
+      <value>Mod Header</value>
     </param>
   </block>
   <block>
-    <key>blocks_repack_bits_bb</key>
+    <key>virtual_sink</key>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>l</key>
-      <value>Const_PLD.bits_per_symbol()</value>
+      <key>_coordinate</key>
+      <value>(1048, 291)</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>id</key>
+      <value>mod_payload</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>stream_id</key>
+      <value>Mod Payload</value>
     </param>
+  </block>
+  <block>
+    <key>pfb_arb_resampler_xxx</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(560, 275)</value>
+      <value>(720, 387)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
       <key>id</key>
-      <value>digital_map_bb_1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>pfb_arb_resampler_xxx_0</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_HDR.pre_diff_code()</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>nfilts</key>
+      <value>nfilts</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>rrate</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>samp_delay</key>
+      <value>filt_delay</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>atten</key>
+      <value>100</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 211)</value>
+      <key>taps</key>
+      <value>psf_taps</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>type</key>
+      <value>ccf</value>
     </param>
   </block>
   <block>
-    <key>blocks_repack_bits_bb</key>
-    <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
-    </param>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_HDR.bits_per_symbol()</value>
+      <key>bw</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>fc</key>
+      <value>0</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(1056, 443)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(560, 203)</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_packet_format_async</key>
+    <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
     <param>
       <key>id</key>
-      <value>digital_packet_format_async_1</value>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>formatter</key>
-      <value>formatter</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>color10</key>
+      <value>"dark blue"</value>
+    </param>
+    <param>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(80, 232)</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0_0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>out_type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>symbol_table</key>
-      <value>Const_PLD.points()</value>
-    </param>
-    <param>
-      <key>dimension</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>num_ports</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 275)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>id</key>
-      <value>mod_header</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1120, 211)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
-    <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>in_type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>out_type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>symbol_table</key>
-      <value>Const_HDR.points()</value>
-    </param>
-    <param>
-      <key>dimension</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>num_ports</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 203)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>id</key>
-      <value>mod_payload</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1120, 283)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_packet_formatter_default</key>
-    <param>
-      <key>id</key>
-      <value>formatter</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>access_code</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1072, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
-    <param>
-      <key>id</key>
-      <value>Const_PLD</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_4()[1]</value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_4()[0]</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>4</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
-    <param>
-      <key>id</key>
-      <value>Const_PLD</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(736, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
-    <param>
-      <key>id</key>
-      <value>Const_HDR</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(576, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_rrc_filter_taps</key>
-    <param>
-      <key>id</key>
-      <value>tx_rrc_taps</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gain</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>samp_rate</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>sym_rate</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>alpha</key>
-      <value>eb</value>
-    </param>
-    <param>
-      <key>ntaps</key>
-      <value>5*sps*nfilts</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1304, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
-    <param>
-      <key>id</key>
-      <value>time_offset</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Time Offset</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>start</key>
-      <value>0.99</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>1.01</value>
-    </param>
-    <param>
-      <key>step</key>
-      <value>0.0001</value>
-    </param>
-    <param>
-      <key>widget</key>
-      <value>counter_slider</value>
-    </param>
-    <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
-    </param>
-    <param>
-      <key>min_len</key>
-      <value>200</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>1,0,1,1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(264, 627)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_tab_widget</key>
-    <param>
-      <key>id</key>
-      <value>tab0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>num_tabs</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>label0</key>
-      <value>Freq.</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value>Const.</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value>Tab 2</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value>Tab 3</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value>Tab 4</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value>Tab 5</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value>Tab 6</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value>Tab 7</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value>Tab 8</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value>Tab 9</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value>Tab 10</value>
-    </param>
-    <param>
-      <key>label11</key>
-      <value>Tab 11</value>
-    </param>
-    <param>
-      <key>label12</key>
-      <value>Tab 12</value>
-    </param>
-    <param>
-      <key>label13</key>
-      <value>Tab 13</value>
-    </param>
-    <param>
-      <key>label14</key>
-      <value>Tab 14</value>
-    </param>
-    <param>
-      <key>label15</key>
-      <value>Tab 15</value>
-    </param>
-    <param>
-      <key>label16</key>
-      <value>Tab 16</value>
-    </param>
-    <param>
-      <key>label17</key>
-      <value>Tab 17</value>
-    </param>
-    <param>
-      <key>label18</key>
-      <value>Tab 18</value>
-    </param>
-    <param>
-      <key>label19</key>
-      <value>Tab 19</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>2,1,1,1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(40, 755)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
-    </param>
-    <param>
-      <key>yunit</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>2500</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>2,0,1,1</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_delay</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1192, 339)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_burst_shaper_xx</key>
-    <param>
-      <key>id</key>
-      <value>digital_burst_shaper_xx_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>window</key>
-      <value>firdes.window(firdes.WIN_HANN, 20, 0)</value>
-    </param>
-    <param>
-      <key>pre_padding</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>post_padding</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>insert_phasing</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>length_tag_name</key>
-      <value>"packet_len"</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(448, 379)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
-    <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>ccf</value>
-    </param>
-    <param>
-      <key>rrate</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>tx_rrc_taps</value>
-    </param>
-    <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>atten</key>
-      <value>100</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>samp_delay</key>
-      <value>0</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(680, 387)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>channels_channel_model</key>
-    <param>
-      <key>id</key>
-      <value>channels_channel_model_0</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>noise_voltage</key>
-      <value>noise</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>freq_offset</key>
-      <value>freq_offset</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
-      <key>epsilon</key>
-      <value>time_offset</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>taps</key>
+      <key>alpha6</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>seed</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>block_tags</key>
-      <value>False</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(936, 379)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>freqhalf</key>
-      <value>True</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>fc</key>
-      <value>0</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>bw</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>average</key>
-      <value>1.0</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
       <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>showports</key>
+      <value>True</value>
     </param>
     <param>
-      <key>showports</key>
+      <key>freqhalf</key>
       <value>True</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
       <key>tr_level</key>
       <value>0.0</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
       <key>tr_tag</key>
       <value>""</value>
     </param>
     <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>label</key>
+      <value>Relative Gain</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>ymax</key>
+      <value>10</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>ymin</key>
+      <value>-140</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>units</key>
+      <value>dB</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label4</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>_coordinate</key>
+      <value>(1056, 363)</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>width7</key>
+      <key>style1</key>
       <value>1</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha7</key>
+      <key>alpha10</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label8</key>
+      <key>color10</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>width8</key>
+      <key>marker10</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style10</key>
       <value>1</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha8</key>
+      <key>alpha2</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label9</key>
+      <key>color2</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
+      <key>marker2</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style2</key>
       <value>1</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha9</key>
+      <key>alpha3</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label10</key>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>width10</key>
+      <key>marker3</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style3</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha10</key>
+      <key>alpha4</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 419)</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>size</key>
-      <value>1024</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>xmin</key>
-      <value>-2</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>xmax</key>
-      <value>2</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width1</key>
+      <key>width8</key>
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>0</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width2</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>0</value>
+      <key>size</key>
+      <value>400*sps</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>srate</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>tr_delay</key>
+      <value>15</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"red"</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>0</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>tr_tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"red"</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>0</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>0</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
+  </block>
+  <block>
+    <key>virtual_source</key>
     <param>
-      <key>label5</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"red"</value>
+      <key>_coordinate</key>
+      <value>(24, 379)</value>
     </param>
     <param>
-      <key>style5</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>0</value>
+      <key>id</key>
+      <value>rx_mod_header</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>stream_id</key>
+      <value>Mod Header</value>
     </param>
+  </block>
+  <block>
+    <key>virtual_source</key>
     <param>
-      <key>label6</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"red"</value>
+      <key>_coordinate</key>
+      <value>(24, 427)</value>
     </param>
     <param>
-      <key>style6</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>0</value>
+      <key>id</key>
+      <value>rx_mod_payload</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>stream_id</key>
+      <value>Mod Payload</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_tab_widget</key>
     <param>
-      <key>label7</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"red"</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>style7</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(1056, 531)</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>id</key>
+      <value>tab</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"red"</value>
+      <key>label0</key>
+      <value>Time</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>0</value>
+      <key>label1</key>
+      <value>Freq</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>0</value>
+      <key>label10</key>
+      <value>Tab 10</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>label11</key>
+      <value>Tab 11</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>label12</key>
+      <value>Tab 12</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>label13</key>
+      <value>Tab 13</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"red"</value>
+      <key>label14</key>
+      <value>Tab 14</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>0</value>
+      <key>label15</key>
+      <value>Tab 15</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>0</value>
+      <key>label16</key>
+      <value>Tab 16</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>label17</key>
+      <value>Tab 17</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>label18</key>
+      <value>Tab 18</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>label19</key>
+      <value>Tab 19</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"red"</value>
+      <key>label2</key>
+      <value>Tab 2</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>0</value>
+      <key>label3</key>
+      <value>Tab 3</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>0</value>
+      <key>label4</key>
+      <value>Tab 4</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>label5</key>
+      <value>Tab 5</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>label6</key>
+      <value>Tab 6</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>label7</key>
+      <value>Tab 7</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>label8</key>
+      <value>Tab 8</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 499)</value>
+      <key>label9</key>
+      <value>Tab 9</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>num_tabs</key>
+      <value>2</value>
     </param>
   </block>
   <connection>
-    <source_block_id>rx_mod_header</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <source_block_id>blocks_message_strobe_0</source_block_id>
+    <sink_block_id>blocks_random_pdu_0</sink_block_id>
+    <source_key>strobe</source_key>
+    <sink_key>generate</sink_key>
   </connection>
   <connection>
-    <source_block_id>rx_mod_payload</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
+    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
+    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>1</sink_key>
+    <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_crc32_async_bb_1</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
+    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
+    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>fec_async_encoder_0</source_block_id>
-    <sink_block_id>digital_packet_format_async_1</sink_block_id>
-    <source_key>out</source_key>
+    <source_block_id>blocks_random_pdu_0</source_block_id>
+    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
+    <source_key>pdus</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
-    <source_key>header</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
-    <source_key>payload</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
+    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
+    <sink_block_id>digital_map_bb_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>channels_channel_model_0</sink_block_id>
+    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
+    <sink_block_id>digital_map_bb_1_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -3224,75 +2180,69 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <source_block_id>digital_chunks_to_symbols_xx_0</source_block_id>
+    <sink_block_id>mod_header</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
+    <source_block_id>digital_chunks_to_symbols_xx_0_0</source_block_id>
+    <sink_block_id>mod_payload</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_random_pdu_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
-    <source_key>pdus</source_key>
+    <source_block_id>digital_crc32_async_bb_1</source_block_id>
+    <sink_block_id>digital_packet_format_async_1</sink_block_id>
+    <source_key>out</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_message_strobe_0</source_block_id>
-    <sink_block_id>blocks_random_pdu_0</sink_block_id>
-    <source_key>strobe</source_key>
-    <sink_key>generate</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_map_bb_1_0</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0_0</sink_block_id>
+    <source_block_id>digital_map_bb_1</source_block_id>
+    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
+    <source_block_id>digital_map_bb_1_0</source_block_id>
+    <sink_block_id>digital_chunks_to_symbols_xx_0_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <source_block_id>digital_packet_format_async_1</source_block_id>
+    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
+    <source_key>header</source_key>
+    <sink_key>pdus</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>digital_map_bb_1_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <source_block_id>digital_packet_format_async_1</source_block_id>
+    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
+    <source_key>payload</source_key>
+    <sink_key>pdus</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>digital_map_bb_1</sink_block_id>
+    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_map_bb_1</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
+    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0</source_block_id>
-    <sink_block_id>mod_header</sink_block_id>
+    <source_block_id>rx_mod_header</source_block_id>
+    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0_0</source_block_id>
-    <sink_block_id>mod_payload</sink_block_id>
+    <source_block_id>rx_mod_payload</source_block_id>
+    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <sink_key>1</sink_key>
   </connection>
 </flow_graph>
diff --git a/gr-digital/examples/packet/transmitter_sim.grc 
b/gr-digital/examples/packet/tx_stage6a.grc
similarity index 66%
copy from gr-digital/examples/packet/transmitter_sim.grc
copy to gr-digital/examples/packet/tx_stage6a.grc
index 8917396..972cedc 100644
--- a/gr-digital/examples/packet/transmitter_sim.grc
+++ b/gr-digital/examples/packet/tx_stage6a.grc
@@ -1,23 +1,23 @@
-<?xml version='1.0' encoding='ASCII'?>
-<?grc format='1' created='3.7.8'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.10'?>
 <flow_graph>
-  <timestamp>Thu Dec  4 14:34:25 2014</timestamp>
+  <timestamp>Sun Apr 10 12:10:29 2016</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>parse_packet_header_soft</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>window_size</key>
+      <value></value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
+      <key>category</key>
+      <value>Custom</value>
     </param>
     <param>
-      <key>author</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -25,807 +25,805 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>2000,2000</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_coordinate</key>
+      <value>(8, 11)</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>tx_stage6a</value>
     </param>
     <param>
       <key>max_nouts</key>
       <value>0</value>
     </param>
     <param>
+      <key>qt_qss_theme</key>
+      <value></value>
+    </param>
+    <param>
       <key>realtime_scheduling</key>
       <value></value>
     </param>
     <param>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
+    </param>
+    <param>
+      <key>run_options</key>
+      <value>prompt</value>
+    </param>
+    <param>
+      <key>run</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>thread_safe_setters</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>title</key>
       <value></value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(8, 11)</value>
+      <value>(272, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>rate</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>bps</value>
     </param>
     <param>
       <key>value</key>
-      <value>2</value>
+      <value>pld_const.bits_per_symbol()</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1312, 819)</value>
+      <value>(936, 563)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>k</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>eb</value>
     </param>
     <param>
       <key>value</key>
-      <value>7</value>
+      <value>0.22</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1240, 819)</value>
+      <value>(888, 499)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>rep</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>filt_delay</value>
     </param>
     <param>
       <key>value</key>
-      <value>3</value>
+      <value>1+(taps_per_filt-1)/2</value>
     </param>
+  </block>
+  <block>
+    <key>variable_packet_formatter_default</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>access_code</key>
+      <value>digital.packet_utils.default_access_code</value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1216, 883)</value>
+      <value>(400, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>polys</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>formatter</value>
     </param>
     <param>
-      <key>value</key>
-      <value>[109, 79]</value>
+      <key>threshold</key>
+      <value>thresh</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>0</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1288, 883)</value>
+      <value>(624, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>eb</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>formatter</value>
     </param>
     <param>
       <key>value</key>
-      <value>0.22</value>
+      
<value>digital.packet_formatter_counter(digital.packet_utils.default_access_code,
 thresh, bps)</value>
     </param>
+  </block>
+  <block>
+    <key>variable_constellation</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
+    </param>
+    <param>
+      <key>dims</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1216, 67)</value>
+      <value>(816, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>nfilts</value>
+      <value>hdr_const</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>value</key>
-      <value>32</value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>precision</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1144, 67)</value>
+      <value>(864, 563)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>nfilts</value>
     </param>
     <param>
       <key>value</key>
-      <value>2</value>
+      <value>32</value>
     </param>
+  </block>
+  <block>
+    <key>variable_constellation</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
+    </param>
+    <param>
+      <key>dims</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1072, 67)</value>
+      <value>(976, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
     <param>
       <key>id</key>
-      <value>rx_mod_header</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>pld_const</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(16, 379)</value>
+      <key>precision</key>
+      <value>8</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
   </block>
   <block>
-    <key>virtual_source</key>
+    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>id</key>
-      <value>rx_mod_payload</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha</key>
+      <value>eb</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(16, 427)</value>
+      <value>(656, 499)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_mux</key>
+    <param>
+      <key>gain</key>
+      <value>nfilts</value>
+    </param>
     <param>
       <key>id</key>
-      <value>blocks_tagged_stream_mux_0</value>
+      <value>psf_taps</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ntaps</key>
+      <value>15*sps*nfilts</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>samp_rate</key>
+      <value>nfilts</value>
     </param>
     <param>
-      <key>ninputs</key>
-      <value>2</value>
+      <key>sym_rate</key>
+      <value>1.0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>vlen</key>
+      <key>_enabled</key>
       <value>1</value>
     </param>
     <param>
-      <key>tag_preserve_head_pos</key>
-      <value>0</value>
+      <key>alpha</key>
+      <value>eb</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(1056, 467)</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>gain</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>id</key>
+      <value>rx_psf_taps</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>ntaps</key>
+      <value>15*sps</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(216, 400)</value>
+      <key>samp_rate</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sym_rate</key>
+      <value>1.0</value>
     </param>
   </block>
   <block>
-    <key>blocks_message_strobe</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>blocks_message_strobe_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>msg</key>
-      <value>pmt.intern("TEST")</value>
-    </param>
-    <param>
-      <key>period</key>
-      <value>100</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(792, 563)</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>id</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>value</key>
+      <value>4</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(24, 83)</value>
+      <value>(792, 499)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>taps_per_filt</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>len(psf_taps)/nfilts</value>
+    </param>
   </block>
   <block>
-    <key>fec_async_encoder</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>fec_async_encoder_0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
-      <key>encoder</key>
-      <value>enc</value>
+      <key>_coordinate</key>
+      <value>(192, 11)</value>
     </param>
     <param>
-      <key>packed</key>
-      <value>True</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rev_unpack</key>
-      <value>False</value>
+      <key>id</key>
+      <value>thresh</value>
     </param>
     <param>
-      <key>rev_pack</key>
-      <value>False</value>
+      <key>value</key>
+      <value>3</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_message_strobe</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(80, 171)</value>
+      <value>(24, 99)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_crc32_async_bb</key>
     <param>
       <key>id</key>
-      <value>digital_crc32_async_bb_1</value>
+      <value>blocks_message_strobe_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>check</key>
-      <value>False</value>
+      <key>msg</key>
+      <value>pmt.PMT_T</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>period</key>
+      <value>1000</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_pdu_to_tagged_stream</key>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>comment</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(424, 91)</value>
+      <value>(312, 291)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_random_pdu</key>
     <param>
       <key>id</key>
-      <value>blocks_random_pdu_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>blocks_pdu_to_tagged_stream_0</value>
     </param>
     <param>
-      <key>minsize</key>
-      <value>50</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>maxsize</key>
-      <value>100</value>
+      <key>tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>mask</key>
-      <value>0xFF</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>length_modulo</key>
-      <value>2</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_pdu_to_tagged_stream</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(208, 67)</value>
+      <value>(312, 219)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
+      <value>blocks_pdu_to_tagged_stream_0_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_random_pdu</key>
     <param>
-      <key>dim2</key>
-      <value>4</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>mask</key>
+      <value>0xff</value>
     </param>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(208, 83)</value>
     </param>
     <param>
-      <key>state_end</key>
-      <value>-1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>id</key>
+      <value>blocks_random_pdu_0</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>length_modulo</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>maxsize</key>
+      <value>50</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1384, 779)</value>
+      <key>minsize</key>
+      <value>15</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
   </block>
   <block>
-    <key>variable_repetition_decoder_def</key>
+    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>id</key>
-      <value>dec</value>
+      <key>k</key>
+      <value>8</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>l</key>
+      <value>hdr_const.bits_per_symbol()</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
-    </param>
-    <param>
-      <key>ndim</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>dim1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>dim2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>prob</key>
-      <value>0.5</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>endianness</key>
+      <value>gr.GR_MSB_FIRST</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1184, 699)</value>
+      <value>(536, 211)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc</value>
+      <value>blocks_repack_bits_bb_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>len_tag_key</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>align_output</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_repack_bits_bb</key>
     <param>
       <key>k</key>
-      <value>k</value>
-    </param>
-    <param>
-      <key>rate</key>
-      <value>rate</value>
+      <value>8</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>l</key>
+      <value>pld_const.bits_per_symbol()</value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>endianness</key>
+      <value>gr.GR_MSB_FIRST</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1384, 603)</value>
+      <value>(536, 283)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc</value>
+      <value>blocks_repack_bits_bb_0_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>len_tag_key</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>align_output</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_tagged_stream_mux</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -835,91 +833,119 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(992, 603)</value>
+      <value>(224, 401)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
+      <value>blocks_tagged_stream_mux_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>lengthtagname</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>ninputs</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>tag_preserve_head_pos</key>
+      <value>0</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>digital_burst_shaper_xx</key>
     <param>
       <key>alias</key>
-      <value></value>
+      <value>burst_shaper0</value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(992, 683)</value>
+      <value>(456, 379)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc</value>
+      <value>digital_burst_shaper_xx_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>insert_phasing</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>length_tag_name</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>post_padding</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>pre_padding</key>
+      <value>10</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>window</key>
+      <value>firdes.window(firdes.WIN_HANN, 50, 0)</value>
     </param>
+  </block>
+  <block>
+    <key>digital_chunks_to_symbols_xx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -929,60 +955,56 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1184, 603)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>noise</value>
+      <key>dimension</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Noise Amp</value>
+      <key>_coordinate</key>
+      <value>(864, 211)</value>
     </param>
     <param>
-      <key>value</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>0</value>
+      <key>id</key>
+      <value>digital_chunks_to_symbols_xx_0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>0.5</value>
+      <key>in_type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>num_ports</key>
+      <value>1</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>out_type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,0,1,1</value>
+      <key>symbol_table</key>
+      <value>hdr_const.points()</value>
     </param>
+  </block>
+  <block>
+    <key>digital_chunks_to_symbols_xx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -992,60 +1014,56 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(40, 627)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>freq_offset</value>
+      <key>dimension</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Freq. Offset</value>
+      <key>_coordinate</key>
+      <value>(864, 283)</value>
     </param>
     <param>
-      <key>value</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>-1</value>
+      <key>id</key>
+      <value>digital_chunks_to_symbols_xx_0_0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>1</value>
+      <key>in_type</key>
+      <value>byte</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>num_ports</key>
+      <value>1</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>out_type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,1,1,1</value>
+      <key>symbol_table</key>
+      <value>pld_const.points()</value>
     </param>
+  </block>
+  <block>
+    <key>digital_crc32_async_bb</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -1055,226 +1073,284 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(152, 627)</value>
+      <value>(424, 107)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
       <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0_0</value>
+      <value>digital_crc32_async_bb_1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>check</key>
+      <value>False</value>
     </param>
+  </block>
+  <block>
+    <key>digital_map_bb</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(736, 219)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
+      <key>id</key>
+      <value>digital_map_bb_1</value>
+    </param>
+    <param>
+      <key>map</key>
+      <value>hdr_const.pre_diff_code()</value>
+    </param>
+    <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>digital_map_bb</key>
+    <param>
+      <key>alias</key>
+      <value></value>
+    </param>
+    <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(336, 211)</value>
+      <value>(736, 291)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
       <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
+      <value>digital_map_bb_1_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>map</key>
+      <value>pld_const.pre_diff_code()</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>digital_packet_format_async</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>formatter</key>
+      <value>formatter</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(336, 283)</value>
+      <value>(64, 249)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
       <key>id</key>
-      <value>digital_map_bb_1_0</value>
+      <value>digital_packet_format_async_1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_PLD.pre_diff_code()</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>fir_filter_xxx</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>decim</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(760, 283)</value>
+      <value>(1056, 403)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
       <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
+      <value>fir_filter_xxx_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_PLD.bits_per_symbol()</value>
+      <key>samp_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>taps</key>
+      <value>rx_psf_taps</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>type</key>
+      <value>ccc</value>
     </param>
+  </block>
+  <block>
+    <key>virtual_sink</key>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(1048, 219)</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>id</key>
+      <value>mod_header</value>
     </param>
     <param>
+      <key>stream_id</key>
+      <value>Mod Header</value>
+    </param>
+  </block>
+  <block>
+    <key>virtual_sink</key>
+    <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(560, 275)</value>
+      <value>(1048, 291)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
       <key>id</key>
-      <value>digital_map_bb_1</value>
+      <value>mod_payload</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>stream_id</key>
+      <value>Mod Payload</value>
     </param>
+  </block>
+  <block>
+    <key>pfb_arb_resampler_xxx</key>
     <param>
-      <key>map</key>
-      <value>Const_HDR.pre_diff_code()</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -1282,70 +1358,74 @@
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>_coordinate</key>
+      <value>(720, 387)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>id</key>
+      <value>pfb_arb_resampler_xxx_0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 211)</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
+      <key>nfilts</key>
+      <value>nfilts</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>rrate</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>samp_delay</key>
+      <value>filt_delay</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_HDR.bits_per_symbol()</value>
+      <key>atten</key>
+      <value>100</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>taps</key>
+      <value>psf_taps</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>type</key>
+      <value>ccf</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>fc</key>
       <value>0</value>
     </param>
     <param>
@@ -1353,1861 +1433,835 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(560, 203)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
-  </block>
-  <block>
-    <key>digital_packet_format_async</key>
     <param>
-      <key>id</key>
-      <value>digital_packet_format_async_1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>formatter</key>
-      <value>formatter</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(1320, 443)</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(80, 232)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
-    <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>in_type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>out_type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>symbol_table</key>
-      <value>Const_PLD.points()</value>
-    </param>
-    <param>
-      <key>dimension</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>num_ports</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 275)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>id</key>
-      <value>mod_header</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1120, 211)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
-    <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>in_type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>out_type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>symbol_table</key>
-      <value>Const_HDR.points()</value>
-    </param>
-    <param>
-      <key>dimension</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>num_ports</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 203)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>id</key>
-      <value>mod_payload</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1120, 283)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_packet_formatter_default</key>
-    <param>
-      <key>id</key>
-      <value>formatter</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>access_code</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1072, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
-    <param>
-      <key>id</key>
-      <value>Const_PLD</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_4()[1]</value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_4()[0]</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>4</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(896, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
-    <param>
-      <key>id</key>
-      <value>Const_PLD</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(736, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
-    <param>
-      <key>id</key>
-      <value>Const_HDR</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(576, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_rrc_filter_taps</key>
-    <param>
-      <key>id</key>
-      <value>tx_rrc_taps</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gain</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>samp_rate</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>sym_rate</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>alpha</key>
-      <value>eb</value>
-    </param>
-    <param>
-      <key>ntaps</key>
-      <value>5*sps*nfilts</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1304, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
-    <param>
-      <key>id</key>
-      <value>time_offset</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Time Offset</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>start</key>
-      <value>0.99</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>1.01</value>
-    </param>
-    <param>
-      <key>step</key>
-      <value>0.0001</value>
-    </param>
-    <param>
-      <key>widget</key>
-      <value>counter_slider</value>
-    </param>
-    <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
-    </param>
-    <param>
-      <key>min_len</key>
-      <value>200</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>1,0,1,1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(264, 627)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_tab_widget</key>
-    <param>
-      <key>id</key>
-      <value>tab0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>num_tabs</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>label0</key>
-      <value>Freq.</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value>Const.</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value>Tab 2</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value>Tab 3</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value>Tab 4</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value>Tab 5</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value>Tab 6</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value>Tab 7</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value>Tab 8</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value>Tab 9</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value>Tab 10</value>
-    </param>
-    <param>
-      <key>label11</key>
-      <value>Tab 11</value>
-    </param>
-    <param>
-      <key>label12</key>
-      <value>Tab 12</value>
-    </param>
-    <param>
-      <key>label13</key>
-      <value>Tab 13</value>
-    </param>
-    <param>
-      <key>label14</key>
-      <value>Tab 14</value>
-    </param>
-    <param>
-      <key>label15</key>
-      <value>Tab 15</value>
-    </param>
-    <param>
-      <key>label16</key>
-      <value>Tab 16</value>
-    </param>
-    <param>
-      <key>label17</key>
-      <value>Tab 17</value>
-    </param>
-    <param>
-      <key>label18</key>
-      <value>Tab 18</value>
-    </param>
-    <param>
-      <key>label19</key>
-      <value>Tab 19</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>2,1,1,1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(40, 755)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
-    </param>
-    <param>
-      <key>yunit</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>2500</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>2,0,1,1</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_delay</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>id</key>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha9</key>
+      <key>alpha1</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color10</key>
+      <key>color1</key>
       <value>"blue"</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1192, 339)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_burst_shaper_xx</key>
-    <param>
-      <key>id</key>
-      <value>digital_burst_shaper_xx_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>window</key>
-      <value>firdes.window(firdes.WIN_HANN, 20, 0)</value>
-    </param>
-    <param>
-      <key>pre_padding</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>post_padding</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>insert_phasing</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>length_tag_name</key>
-      <value>"packet_len"</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(448, 379)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
-    <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>ccf</value>
-    </param>
-    <param>
-      <key>rrate</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>tx_rrc_taps</value>
-    </param>
-    <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>atten</key>
-      <value>100</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>samp_delay</key>
-      <value>0</value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(680, 387)</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>channels_channel_model</key>
     <param>
-      <key>id</key>
-      <value>channels_channel_model_0</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>noise_voltage</key>
-      <value>noise</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>freq_offset</key>
-      <value>freq_offset</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>epsilon</key>
-      <value>time_offset</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>taps</key>
-      <value>1.0</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>seed</key>
-      <value>0</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>block_tags</key>
-      <value>False</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>color6</key>
+      <value>"magenta"</value>
+    </param>
+    <param>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(936, 379)</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>freqhalf</key>
-      <value>True</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>fc</key>
-      <value>0</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>1</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>average</key>
-      <value>1.0</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
       <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>showports</key>
+      <value>True</value>
     </param>
     <param>
-      <key>showports</key>
+      <key>freqhalf</key>
       <value>True</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
       <key>tr_level</key>
       <value>0.0</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
       <key>tr_tag</key>
       <value>""</value>
     </param>
     <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>label</key>
+      <value>Relative Gain</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>ymax</key>
+      <value>10</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>ymin</key>
+      <value>-140</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>units</key>
+      <value>dB</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label4</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(1320, 363)</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>label7</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
+      <key>marker1</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style1</key>
       <value>1</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha7</key>
+      <key>alpha10</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label8</key>
+      <key>color10</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>width8</key>
+      <key>marker10</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style10</key>
       <value>1</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha8</key>
+      <key>alpha2</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label9</key>
+      <key>color2</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
+      <key>marker2</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style2</key>
       <value>1</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha9</key>
+      <key>alpha3</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label10</key>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>width10</key>
+      <key>marker3</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style3</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha10</key>
+      <key>alpha4</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 419)</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>size</key>
-      <value>1024</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>xmin</key>
-      <value>-2</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>xmax</key>
-      <value>2</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width1</key>
+      <key>width8</key>
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>0</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width2</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>0</value>
+      <key>size</key>
+      <value>400*sps</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>srate</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>tr_delay</key>
+      <value>15</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"red"</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>0</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>tr_tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"red"</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>0</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>0</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
+  </block>
+  <block>
+    <key>virtual_source</key>
     <param>
-      <key>label5</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"red"</value>
+      <key>_coordinate</key>
+      <value>(24, 379)</value>
     </param>
     <param>
-      <key>style5</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>0</value>
+      <key>id</key>
+      <value>rx_mod_header</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>stream_id</key>
+      <value>Mod Header</value>
     </param>
+  </block>
+  <block>
+    <key>virtual_source</key>
     <param>
-      <key>label6</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"red"</value>
+      <key>_coordinate</key>
+      <value>(24, 427)</value>
     </param>
     <param>
-      <key>style6</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>0</value>
+      <key>id</key>
+      <value>rx_mod_payload</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>stream_id</key>
+      <value>Mod Payload</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_tab_widget</key>
     <param>
-      <key>label7</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"red"</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>style7</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(1320, 531)</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>id</key>
+      <value>tab</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"red"</value>
+      <key>label0</key>
+      <value>Time</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>0</value>
+      <key>label1</key>
+      <value>Freq</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>0</value>
+      <key>label10</key>
+      <value>Tab 10</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>label11</key>
+      <value>Tab 11</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>label12</key>
+      <value>Tab 12</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>label13</key>
+      <value>Tab 13</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"red"</value>
+      <key>label14</key>
+      <value>Tab 14</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>0</value>
+      <key>label15</key>
+      <value>Tab 15</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>0</value>
+      <key>label16</key>
+      <value>Tab 16</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>label17</key>
+      <value>Tab 17</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>label18</key>
+      <value>Tab 18</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>label19</key>
+      <value>Tab 19</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"red"</value>
+      <key>label2</key>
+      <value>Const</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>0</value>
+      <key>label3</key>
+      <value>Tab 3</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>0</value>
+      <key>label4</key>
+      <value>Tab 4</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>label5</key>
+      <value>Tab 5</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>label6</key>
+      <value>Tab 6</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>label7</key>
+      <value>Tab 7</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>label8</key>
+      <value>Tab 8</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 499)</value>
+      <key>label9</key>
+      <value>Tab 9</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>num_tabs</key>
+      <value>2</value>
     </param>
   </block>
   <connection>
-    <source_block_id>rx_mod_header</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <source_block_id>blocks_message_strobe_0</source_block_id>
+    <sink_block_id>blocks_random_pdu_0</sink_block_id>
+    <source_key>strobe</source_key>
+    <sink_key>generate</sink_key>
   </connection>
   <connection>
-    <source_block_id>rx_mod_payload</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
+    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
+    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>1</sink_key>
+    <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_crc32_async_bb_1</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
+    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
+    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>fec_async_encoder_0</source_block_id>
-    <sink_block_id>digital_packet_format_async_1</sink_block_id>
-    <source_key>out</source_key>
+    <source_block_id>blocks_random_pdu_0</source_block_id>
+    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
+    <source_key>pdus</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
-    <source_key>header</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
-    <source_key>payload</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
+    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
+    <sink_block_id>digital_map_bb_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>channels_channel_model_0</sink_block_id>
+    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
+    <sink_block_id>digital_map_bb_1_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
@@ -3224,28 +2278,28 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <source_block_id>digital_chunks_to_symbols_xx_0</source_block_id>
+    <sink_block_id>mod_header</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
+    <source_block_id>digital_chunks_to_symbols_xx_0_0</source_block_id>
+    <sink_block_id>mod_payload</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_random_pdu_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
-    <source_key>pdus</source_key>
+    <source_block_id>digital_crc32_async_bb_1</source_block_id>
+    <sink_block_id>digital_packet_format_async_1</sink_block_id>
+    <source_key>out</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_message_strobe_0</source_block_id>
-    <sink_block_id>blocks_random_pdu_0</sink_block_id>
-    <source_key>strobe</source_key>
-    <sink_key>generate</sink_key>
+    <source_block_id>digital_map_bb_1</source_block_id>
+    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
+    <source_key>0</source_key>
+    <sink_key>0</sink_key>
   </connection>
   <connection>
     <source_block_id>digital_map_bb_1_0</source_block_id>
@@ -3254,45 +2308,45 @@
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <source_block_id>digital_packet_format_async_1</source_block_id>
+    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
+    <source_key>header</source_key>
+    <sink_key>pdus</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <source_block_id>digital_packet_format_async_1</source_block_id>
+    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
+    <source_key>payload</source_key>
+    <sink_key>pdus</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>digital_map_bb_1_0</sink_block_id>
+    <source_block_id>fir_filter_xxx_0</source_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>digital_map_bb_1</sink_block_id>
+    <source_block_id>fir_filter_xxx_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_map_bb_1</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
+    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
+    <sink_block_id>fir_filter_xxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0</source_block_id>
-    <sink_block_id>mod_header</sink_block_id>
+    <source_block_id>rx_mod_header</source_block_id>
+    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0_0</source_block_id>
-    <sink_block_id>mod_payload</sink_block_id>
+    <source_block_id>rx_mod_payload</source_block_id>
+    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
     <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <sink_key>1</sink_key>
   </connection>
 </flow_graph>
diff --git a/gr-digital/examples/packet/packet_sync.grc 
b/gr-digital/examples/packet/uhd_packet_rx.grc
similarity index 59%
rename from gr-digital/examples/packet/packet_sync.grc
rename to gr-digital/examples/packet/uhd_packet_rx.grc
index a95a8e5..3734010 100644
--- a/gr-digital/examples/packet/packet_sync.grc
+++ b/gr-digital/examples/packet/uhd_packet_rx.grc
@@ -1,23 +1,23 @@
-<?xml version='1.0' encoding='ASCII'?>
-<?grc format='1' created='3.7.8'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.10'?>
 <flow_graph>
   <timestamp>Thu Dec  4 14:34:25 2014</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>packet_sync</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>window_size</key>
+      <value>2000,2000</value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
+      <key>category</key>
+      <value>Custom</value>
     </param>
     <param>
-      <key>author</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -25,955 +25,1002 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>2000,2000</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_coordinate</key>
+      <value>(8, 11)</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>uhd_packet_rx</value>
     </param>
     <param>
       <key>max_nouts</key>
       <value>0</value>
     </param>
     <param>
-      <key>realtime_scheduling</key>
+      <key>qt_qss_theme</key>
       <value></value>
     </param>
     <param>
-      <key>thread_safe_setters</key>
+      <key>realtime_scheduling</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(8, 11)</value>
+      <key>run</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>thread_safe_setters</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>rxmod</value>
+      <key>title</key>
+      <value></value>
     </param>
+  </block>
+  <block>
+    <key>variable_constellation</key>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>digital.generic_mod(Const_HDR, False, sps, True, eb, False, 
False)</value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>dims</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1432, 67)</value>
+      <value>(240, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>eb</value>
+      <value>Const_HDR</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>value</key>
-      <value>0.22</value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>precision</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
+  </block>
+  <block>
+    <key>variable_constellation</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>const_points</key>
+      <value>digital.psk_4()[0]</value>
+    </param>
+    <param>
+      <key>dims</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1208, 67)</value>
+      <value>(560, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>k</value>
+      <value>Const_PLD</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>rot_sym</key>
+      <value>4</value>
     </param>
     <param>
-      <key>value</key>
-      <value>7</value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>precision</key>
+      <value>8</value>
     </param>
     <param>
+      <key>sym_map</key>
+      <value>digital.psk_4()[1]</value>
+    </param>
+  </block>
+  <block>
+    <key>variable_constellation</key>
+    <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
+    </param>
+    <param>
+      <key>dims</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1272, 995)</value>
+      <value>(400, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>polys</value>
+      <value>Const_PLD</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>value</key>
-      <value>[109, 79]</value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>precision</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>value</key>
+      <value>500</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1320, 1059)</value>
+      <value>(176, 595)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>rep</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>amp</value>
     </param>
     <param>
-      <key>value</key>
-      <value>3</value>
+      <key>label</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1248, 1059)</value>
+      <key>start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>step</key>
+      <value>10</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>rate</value>
+      <key>stop</key>
+      <value>15000</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>value</key>
-      <value>2</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable_cc_decoder_def</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>padding</key>
+      <value>False</value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1344, 995)</value>
+      <key>k</key>
+      <value>k</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>sps</value>
+      <key>dim2</key>
+      <value>4</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>2</value>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>state_end</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1064, 67)</value>
+      <value>(680, 555)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>dec</value>
     </param>
     <param>
       <key>value</key>
-      <value>32</value>
+      <value>"ok"</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>polys</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1136, 67)</value>
+      <key>rate</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>state_start</key>
       <value>0</value>
     </param>
+    <param>
+      <key>mode</key>
+      <value>fec.CC_TERMINATED</value>
+    </param>
   </block>
   <block>
-    <key>variable</key>
+    <key>variable_dummy_decoder_def</key>
     <param>
-      <key>id</key>
-      <value>preamble</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
-      <value>[0xac, 0xdd, 0xa4, 0xe2, 0xf2, 0x8c, 0x20, 0xfc]</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1432, 3)</value>
+      <value>(496, 555)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
     <param>
       <key>id</key>
-      <value>rx_mod_header</value>
+      <value>dec</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>"ok"</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_repetition_decoder_def</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(16, 379)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
     <param>
-      <key>id</key>
-      <value>rx_mod_payload</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(16, 427)</value>
+      <value>(480, 635)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
       <key>id</key>
-      <value>Const_PLD</value>
+      <value>dec</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>"ok"</value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
+      <key>rep</key>
+      <value>rep</value>
     </param>
     <param>
-      <key>rot_sym</key>
-      <value>2</value>
+      <key>prob</key>
+      <value>0.5</value>
     </param>
+  </block>
+  <block>
+    <key>variable_dummy_decoder_def</key>
     <param>
-      <key>dims</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(736, 3)</value>
+      <value>(592, 475)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
       <key>id</key>
-      <value>Const_PLD</value>
+      <value>dec_hdr</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_4()[1]</value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_4()[0]</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>4</value>
-    </param>
-    <param>
-      <key>dims</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>precision</key>
-      <value>8</value>
+      <key>value</key>
+      <value>"ok"</value>
     </param>
     <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(896, 3)</value>
+      <value>(152, 75)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
       <key>id</key>
-      <value>Const_HDR</value>
+      <value>eb</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>0.22</value>
     </param>
+  </block>
+  <block>
+    <key>variable_packet_formatter_default</key>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
+      <key>access_code</key>
+      <value>digital.packet_utils.default_access_code</value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>rot_sym</key>
-      <value>2</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>dims</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(728, 11)</value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>id</key>
+      <value>formatter</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>threshold</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(576, 3)</value>
+      <value>(728, 91)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_crc32_async_bb</key>
     <param>
       <key>id</key>
-      <value>digital_crc32_async_bb_1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>check</key>
-      <value>False</value>
+      <value>formatter</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>value</key>
+      
<value>digital.packet_formatter_counter(digital.packet_utils.default_access_code,
 Const_PLD.bits_per_symbol())</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>value</key>
+      <value>484e6</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(176, 467)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(424, 91)</value>
+      <key>gui_hint</key>
+      <value>0,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>fec_async_encoder</key>
     <param>
       <key>id</key>
-      <value>fec_async_encoder_0</value>
+      <value>freq</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Frequency</value>
     </param>
     <param>
-      <key>encoder</key>
-      <value>enc</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>packed</key>
-      <value>True</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>rev_unpack</key>
-      <value>False</value>
+      <key>start</key>
+      <value>480e6</value>
     </param>
     <param>
-      <key>rev_pack</key>
-      <value>False</value>
+      <key>step</key>
+      <value>100</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
+      <key>stop</key>
+      <value>490e6</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>value</key>
+      <value>20</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(80, 171)</value>
+      <value>(48, 595)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1,0,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
+      <value>gain</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>label</key>
+      <value>Gain</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>step</key>
+      <value>0.5</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>stop</key>
+      <value>31.5</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>prob</key>
-      <value>0.5</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1216, 875)</value>
+      <value>(904, 619)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>k</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>7</value>
+    </param>
   </block>
   <block>
-    <key>variable_cc_encoder_def</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>enc</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
+      <value>True</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(80, 75)</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>id</key>
+      <value>nfilts</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>value</key>
+      <value>32</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_check_box</key>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>value</key>
+      <value>0</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>state_start</key>
+      <key>false</key>
       <value>0</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>_coordinate</key>
+      <value>(312, 635)</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>id</key>
+      <value>on</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1416, 779)</value>
+      <key>label</key>
+      <value>On</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>true</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>int</value>
     </param>
   </block>
   <block>
-    <key>variable_dummy_encoder_def</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>enc</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(952, 683)</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>id</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>value</key>
+      <value>[109, 79]</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1024, 779)</value>
+      <value>(976, 619)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>rate</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>2</value>
+    </param>
   </block>
   <block>
-    <key>variable_dummy_decoder_def</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>dec</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>_coordinate</key>
+      <value>(880, 683)</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>id</key>
+      <value>rep</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>value</key>
+      <value>3</value>
     </param>
+  </block>
+  <block>
+    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha</key>
+      <value>eb</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1024, 859)</value>
+      <value>(952, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc</value>
+      <key>gain</key>
+      <value>nfilts</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>id</key>
+      <value>rx_rrc_taps</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>ntaps</key>
+      <value>11*sps*nfilts</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>samp_rate</key>
+      <value>sps*nfilts</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>sym_rate</key>
+      <value>1.0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>value</key>
+      <value>1000e3</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(48, 467)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1216, 779)</value>
+      <key>gui_hint</key>
+      <value>0,0,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>label</key>
+      <value>Sample Rate</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>start</key>
+      <value>200e3</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>4</value>
+      <key>step</key>
+      <value>200e3</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>stop</key>
+      <value>10e6</value>
     </param>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>state_end</key>
-      <value>-1</value>
+      <key>_coordinate</key>
+      <value>(8, 75)</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>id</key>
+      <value>sps</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_message_debug</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -983,4406 +1030,3025 @@
       <value></value>
     </param>
     <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1416, 955)</value>
+      <value>(968, 153)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>blocks_message_debug_0_0_0</value>
+    </param>
   </block>
   <block>
-    <key>variable_packet_formatter_default</key>
+    <key>blocks_multiply_const_vxx</key>
     <param>
-      <key>id</key>
-      <value>formatter</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>access_code</key>
-      <value>0</value>
+      <key>const</key>
+      <value>amp</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1064, 3)</value>
+      <value>(320, 163)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_modulate_vector</key>
     <param>
       <key>id</key>
-      <value>modulated_sync_word</value>
+      <value>blocks_multiply_const_vxx_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>mod</key>
-      <value>rxmod</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>data</key>
-      <value>preamble</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>taps</key>
-      <value>[1]</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_multiply_const_vxx</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
       <key>comment</key>
+      <value>User gatting of on/off.
+Use the "On" check box
+to start sending samples
+to the receiver.</value>
+    </param>
+    <param>
+      <key>const</key>
+      <value>on</value>
+    </param>
+    <param>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1432, 131)</value>
+      <value>(528, 307)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_message_strobe</key>
     <param>
       <key>id</key>
-      <value>blocks_message_strobe_0</value>
+      <value>blocks_multiply_const_vxx_1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>msg</key>
-      <value>pmt.intern("TEST")</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>period</key>
-      <value>1000</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>digital_fll_band_edge_cc</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>rolloff</key>
+      <value>eb</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(24, 83)</value>
+      <value>(320, 313)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_packet_format_async</key>
     <param>
       <key>id</key>
-      <value>digital_packet_format_async_1</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>formatter</key>
-      <value>formatter</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
+      <value>digital_fll_band_edge_cc_0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>w</key>
+      <value>0.05</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>filter_size</key>
+      <value>44</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(80, 232)</value>
+      <key>samps_per_sym</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>type</key>
+      <value>cc</value>
     </param>
   </block>
   <block>
-    <key>blocks_pdu_to_tagged_stream</key>
+    <key>packet_rx</key>
     <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0_0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>eb</key>
+      <value>eb</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(696, 201)</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>hdr_dec</key>
+      <value>dec_hdr</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>hdr_const</key>
+      <value>Const_HDR</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(336, 211)</value>
+      <key>id</key>
+      <value>packet_rx_0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>formatter</key>
+      <value>formatter</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>pld_dec</key>
+      <value>dec</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>pld_const</key>
+      <value>Const_PLD</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>psf_taps</key>
+      <value>rx_rrc_taps</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>sps</key>
+      <value>sps</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_const_sink_x</key>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(336, 283)</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
+      <key>_coordinate</key>
+      <value>(504, 147)</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_HDR.bits_per_symbol()</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>id</key>
+      <value>qtgui_const_sink_x_0</value>
     </param>
     <param>
-      <key>align_output</key>
+      <key>legend</key>
       <value>False</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker1</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style1</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(560, 203)</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>color10</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker10</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
-      <key>id</key>
-      <value>digital_map_bb_1</value>
+      <key>style10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_HDR.pre_diff_code()</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker2</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style2</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(760, 211)</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
+      <key>color3</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>marker3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_PLD.bits_per_symbol()</value>
+      <key>style3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>color4</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>marker4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>style4</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(560, 275)</value>
+      <key>color5</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>label5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker5</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
-      <key>id</key>
-      <value>digital_map_bb_1_0</value>
+      <key>style5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_PLD.pre_diff_code()</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color6</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker6</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style6</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>width6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 283)</value>
+      <key>marker7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style7</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>id</key>
-      <value>mod_header</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>color8</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1120, 211)</value>
+      <key>marker8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style8</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0_0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>color9</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_PLD.points()</value>
+      <key>marker9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dimension</key>
-      <value>1</value>
+      <key>style9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>num_ports</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>size</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>tr_level</key>
+      <value>0.5</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 275)</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_NORM</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>update_time</key>
+      <value>0.01</value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>xmax</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>xmin</key>
+      <value>-2</value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_HDR.points()</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>dimension</key>
-      <value>1</value>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_const_sink_x</key>
     <param>
-      <key>num_ports</key>
-      <value>1</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(992, 267)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 203)</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>id</key>
-      <value>mod_payload</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>id</key>
+      <value>qtgui_const_sink_x_0_0_0</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1120, 283)</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>label1</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_mux</key>
     <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_mux_0</value>
+      <key>marker1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>style1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ninputs</key>
-      <value>2</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
+      <key>color10</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>tag_preserve_head_pos</key>
+      <key>marker10</key>
       <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>style10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(216, 400)</value>
+      <key>marker2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style2</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
     <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>ccf</value>
+      <key>color3</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>rrate</key>
-      <value>sps</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>taps</key>
-      <value>tx_rrc_taps</value>
+      <key>marker3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
+      <key>style3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>atten</key>
-      <value>100</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>samp_delay</key>
-      <value>0</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color4</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker4</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style4</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(680, 387)</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>color5</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label5</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker5</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>channels_channel_model</key>
     <param>
-      <key>id</key>
-      <value>channels_channel_model_0</value>
+      <key>style5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>noise_voltage</key>
-      <value>noise</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>freq_offset</key>
-      <value>freq_offset</value>
+      <key>color6</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>epsilon</key>
-      <value>time_offset</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>taps</key>
-      <value>1.0</value>
+      <key>marker6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>seed</key>
+      <key>style6</key>
       <value>0</value>
     </param>
     <param>
-      <key>block_tags</key>
-      <value>False</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>color7</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker7</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style7</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1224, 395)</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color8</key>
+      <value>"red"</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>id</key>
-      <value>chan_data</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker8</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Chan Data</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1216, 523)</value>
+      <key>color9</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>label9</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
+      <key>marker9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>style9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
       <key>name</key>
       <value>""</value>
     </param>
     <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
-    </param>
-    <param>
-      <key>yunit</key>
-      <value>""</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
       <key>size</key>
-      <value>2500</value>
+      <value>800</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>1</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
       <key>update_time</key>
       <value>0.10</value>
     </param>
     <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>xmax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>xmin</key>
+      <value>-2</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>ctrlpanel</key>
       <value>False</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(504, 211)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>qtgui_time_sink_x_0</value>
+    </param>
+    <param>
+      <key>legend</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color1</key>
       <value>"blue"</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>1</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
       <key>marker1</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha1</key>
+      <key>style1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha10</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>color10</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
+      <key>marker10</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style10</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>width10</key>
       <value>1</value>
     </param>
     <param>
+      <key>alpha2</key>
+      <value>1.0</value>
+    </param>
+    <param>
       <key>color2</key>
       <value>"red"</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>1</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
       <key>marker2</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color3</key>
       <value>"green"</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
       <key>marker3</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color4</key>
       <value>"black"</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
       <key>marker4</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color5</key>
       <value>"cyan"</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
       <key>marker5</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color6</key>
       <value>"magenta"</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
       <key>marker6</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color7</key>
       <value>"yellow"</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
       <key>marker7</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color8</key>
       <value>"dark red"</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
       <key>marker8</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
       <key>color9</key>
       <value>"dark green"</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
       <key>marker9</key>
       <value>-1</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>width10</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>style10</key>
+      <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>size</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>srate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>tr_delay</key>
+      <value>0.5e-3</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1480, 355)</value>
+      <key>tr_level</key>
+      <value>0.5</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_NORM</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
       <key>type</key>
       <value>complex</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>update_time</key>
+      <value>0.01</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>freqhalf</key>
-      <value>True</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>fc</key>
-      <value>0</value>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>bw</key>
-      <value>1</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>average</key>
-      <value>1.0</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>_enabled</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>_coordinate</key>
+      <value>(992, 331)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>showports</key>
-      <value>True</value>
+      <value>address@hidden</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_1_0_0_1</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
       <key>label1</key>
       <value></value>
     </param>
     <param>
+      <key>marker1</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>style1</key>
+      <value>3</value>
+    </param>
+    <param>
       <key>width1</key>
       <value>1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
+      <key>marker10</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style10</key>
       <value>1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
       <key>alpha2</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>color2</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
+      <key>marker2</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style2</key>
       <value>1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
       <key>alpha3</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label4</key>
+      <key>color3</key>
+      <value>"green"</value>
+    </param>
+    <param>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>width4</key>
+      <key>marker3</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style3</key>
       <value>1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
       <key>alpha4</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label5</key>
+      <key>color4</key>
+      <value>"black"</value>
+    </param>
+    <param>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
+      <key>marker4</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style4</key>
       <value>1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
       <key>alpha5</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label6</key>
+      <key>color5</key>
+      <value>"cyan"</value>
+    </param>
+    <param>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>width6</key>
+      <key>marker5</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style5</key>
       <value>1</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
       <key>alpha6</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label7</key>
+      <key>color6</key>
+      <value>"magenta"</value>
+    </param>
+    <param>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
+      <key>marker6</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style6</key>
       <value>1</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
       <key>alpha7</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label8</key>
+      <key>color7</key>
+      <value>"yellow"</value>
+    </param>
+    <param>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>width8</key>
+      <key>marker7</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style7</key>
       <value>1</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
       <key>alpha8</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label9</key>
+      <key>color8</key>
+      <value>"dark red"</value>
+    </param>
+    <param>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
+      <key>marker8</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style8</key>
       <value>1</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
       <key>alpha9</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label10</key>
+      <key>color9</key>
+      <value>"dark green"</value>
+    </param>
+    <param>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>width10</key>
+      <key>marker9</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>style9</key>
       <value>1</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>size</key>
+      <value>1250</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>srate</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>tr_delay</key>
+      <value>25</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1480, 435)</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_tag</key>
+      <value>"time_est"</value>
     </param>
     <param>
       <key>type</key>
       <value>complex</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>size</key>
-      <value>1024</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
       <key>ymax</key>
       <value>2</value>
     </param>
     <param>
-      <key>xmin</key>
+      <key>ymin</key>
       <value>-2</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_tab_widget</key>
     <param>
-      <key>xmax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>_coordinate</key>
+      <value>(312, 467)</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>gui_hint</key>
+      <value>2,1,1,1</value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>id</key>
+      <value>tab0</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>label0</key>
+      <value>Time</value>
     </param>
     <param>
       <key>label1</key>
-      <value></value>
+      <value>Const.</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>label10</key>
+      <value>Tab 10</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>label11</key>
+      <value>Tab 11</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>0</value>
+      <key>label12</key>
+      <value>Tab 12</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>0</value>
+      <key>label13</key>
+      <value>Tab 13</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>label14</key>
+      <value>Tab 14</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>label15</key>
+      <value>Tab 15</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>label16</key>
+      <value>Tab 16</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>label17</key>
+      <value>Tab 17</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>0</value>
+      <key>label18</key>
+      <value>Tab 18</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>0</value>
+      <key>label19</key>
+      <value>Tab 19</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>label2</key>
+      <value>Const.</value>
     </param>
     <param>
       <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"red"</value>
+      <value>Tab 3</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>0</value>
+      <key>label4</key>
+      <value>Tab 4</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>0</value>
+      <key>label5</key>
+      <value>Tab 5</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>label6</key>
+      <value>Tab 6</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>label7</key>
+      <value>Tab 7</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>label8</key>
+      <value>Tab 8</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"red"</value>
+      <key>label9</key>
+      <value>Tab 9</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>0</value>
+      <key>num_tabs</key>
+      <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_tab_widget</key>
     <param>
-      <key>marker4</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(312, 547)</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"red"</value>
+      <key>gui_hint</key>
+      <value>2,0,1,1</value>
     </param>
     <param>
-      <key>style5</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>0</value>
+      <key>id</key>
+      <value>tab1</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>label0</key>
+      <value>Const</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>label1</key>
+      <value>Time</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>label10</key>
+      <value>Tab 10</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"red"</value>
+      <key>label11</key>
+      <value>Tab 11</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>0</value>
+      <key>label12</key>
+      <value>Tab 12</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>0</value>
+      <key>label13</key>
+      <value>Tab 13</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>label14</key>
+      <value>Tab 14</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>label15</key>
+      <value>Tab 15</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>label16</key>
+      <value>Tab 16</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"red"</value>
+      <key>label17</key>
+      <value>Tab 17</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>0</value>
+      <key>label18</key>
+      <value>Tab 18</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>0</value>
+      <key>label19</key>
+      <value>Tab 19</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>label2</key>
+      <value>Const.</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>label3</key>
+      <value>Tab 3</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>label4</key>
+      <value>Tab 4</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"red"</value>
+      <key>label5</key>
+      <value>Tab 5</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>0</value>
+      <key>label6</key>
+      <value>Tab 6</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>0</value>
+      <key>label7</key>
+      <value>Tab 7</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>label8</key>
+      <value>Tab 8</value>
     </param>
     <param>
       <key>label9</key>
-      <value></value>
+      <value>Tab 9</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>num_tabs</key>
+      <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>uhd_usrp_source</key>
     <param>
-      <key>color9</key>
-      <value>"red"</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>style9</key>
-      <value>0</value>
+      <key>ant0</key>
+      <value>TX/RX</value>
     </param>
     <param>
-      <key>marker9</key>
+      <key>bw0</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1480, 515)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_multiply_length</key>
-    <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_multiply_length_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>c</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(936, 416)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
-    <param>
-      <key>id</key>
-      <value>chan_rx_data</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Chan Data</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(48, 571)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1_0_0_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ylabel</key>
-      <value>Correlation</value>
-    </param>
-    <param>
-      <key>yunit</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>1250</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-150</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>150</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>1,0,1,1</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_delay</key>
-      <value>50</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(48, 715)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>180</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_tag_debug</key>
-    <param>
-      <key>id</key>
-      <value>blocks_tag_debug_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value></value>
-    </param>
-    <param>
-      <key>filter</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>num_inputs</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>vlen</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>display</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(520, 667)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_pfb_clock_sync_xxx</key>
-    <param>
-      <key>id</key>
-      <value>digital_pfb_clock_sync_xxx_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>ccf</value>
-    </param>
-    <param>
-      <key>sps</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>loop_bw</key>
-      <value>6.28/100.0</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>rx_rrc_taps</value>
-    </param>
-    <param>
-      <key>filter_size</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>init_phase</key>
-      <value>nfilts/2</value>
-    </param>
-    <param>
-      <key>max_dev</key>
-      <value>1.5</value>
-    </param>
-    <param>
-      <key>osps</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(280, 579)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>fftsize</key>
-      <value>1024</value>
-    </param>
-    <param>
-      <key>freqhalf</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
-    </param>
-    <param>
-      <key>fc</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>bw</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>average</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-140</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>10</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>showports</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(728, 707)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_costas_loop_cc</key>
-    <param>
-      <key>id</key>
-      <value>digital_costas_loop_cc_0_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>w</key>
-      <value>6.28/100.0</value>
-    </param>
-    <param>
-      <key>order</key>
-      <value>Const_HDR.arity()</value>
-    </param>
-    <param>
-      <key>use_snr</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(512, 584)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1_0_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
-    </param>
-    <param>
-      <key>yunit</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>1250</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_delay</key>
-      <value>20</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>corr_est</value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(728, 627)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
-    <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0_0_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>400</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>xmin</key>
-      <value>-2</value>
-    </param>
-    <param>
-      <key>xmax</key>
-      <value>2</value>
+      <key>center_freq0</key>
+      <value>uhd.tune_request(freq, samp_rate/2.0)</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>dc_offs_enb0</key>
+      <value>""</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>iq_imbal_enb0</key>
+      <value>""</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>norm_gain0</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>gain0</key>
+      <value>gain</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>ant10</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>bw10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>center_freq10</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>corr_est</value>
+      <key>dc_offs_enb10</key>
+      <value>""</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>iq_imbal_enb10</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
+      <key>norm_gain10</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>gain10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>ant11</key>
+      <value></value>
     </param>
     <param>
-      <key>style1</key>
+      <key>bw11</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker1</key>
+      <key>center_freq11</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>dc_offs_enb11</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>iq_imbal_enb11</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>norm_gain11</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>gain11</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>0</value>
+      <key>ant12</key>
+      <value></value>
     </param>
     <param>
-      <key>marker2</key>
+      <key>bw12</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>center_freq12</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>dc_offs_enb12</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>iq_imbal_enb12</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"red"</value>
+      <key>norm_gain12</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style3</key>
+      <key>gain12</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker3</key>
+      <key>ant13</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw13</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>center_freq13</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>dc_offs_enb13</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>iq_imbal_enb13</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"red"</value>
+      <key>norm_gain13</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style4</key>
+      <key>gain13</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker4</key>
+      <key>ant14</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw14</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>center_freq14</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>dc_offs_enb14</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>iq_imbal_enb14</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"red"</value>
+      <key>norm_gain14</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style5</key>
+      <key>gain14</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker5</key>
+      <key>ant15</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw15</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>center_freq15</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>dc_offs_enb15</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>iq_imbal_enb15</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"red"</value>
+      <key>norm_gain15</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style6</key>
+      <key>gain15</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker6</key>
+      <key>ant16</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw16</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>center_freq16</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>dc_offs_enb16</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>iq_imbal_enb16</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"red"</value>
+      <key>norm_gain16</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style7</key>
+      <key>gain16</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker7</key>
+      <key>ant17</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw17</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>center_freq17</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>dc_offs_enb17</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>iq_imbal_enb17</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"red"</value>
+      <key>norm_gain17</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style8</key>
+      <key>gain17</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker8</key>
+      <key>ant18</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw18</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>center_freq18</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>dc_offs_enb18</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>iq_imbal_enb18</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"red"</value>
+      <key>norm_gain18</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style9</key>
+      <key>gain18</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker9</key>
+      <key>ant19</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw19</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>center_freq19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>dc_offs_enb19</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>iq_imbal_enb19</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"red"</value>
+      <key>norm_gain19</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style10</key>
+      <key>gain19</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>0</value>
+      <key>ant1</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>bw1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>center_freq1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>dc_offs_enb1</key>
+      <value>""</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>iq_imbal_enb1</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(728, 787)</value>
+      <key>norm_gain1</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain1</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>id</key>
-      <value>rx_rrc_taps</value>
+      <key>ant20</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gain</key>
-      <value>nfilts</value>
+      <key>center_freq20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>nfilts</value>
+      <key>dc_offs_enb20</key>
+      <value>""</value>
     </param>
     <param>
-      <key>sym_rate</key>
-      <value>1.0</value>
+      <key>iq_imbal_enb20</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha</key>
-      <value>eb</value>
+      <key>norm_gain20</key>
+      <value>False</value>
     </param>
     <param>
-      <key>ntaps</key>
-      <value>5*sps*nfilts</value>
+      <key>gain20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant21</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>bw21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1296, 131)</value>
+      <key>center_freq21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>dc_offs_enb21</key>
+      <value>""</value>
     </param>
-  </block>
-  <block>
-    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>id</key>
-      <value>tx_rrc_taps</value>
+      <key>iq_imbal_enb21</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>norm_gain21</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gain</key>
-      <value>nfilts</value>
+      <key>gain21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>nfilts</value>
+      <key>ant22</key>
+      <value></value>
     </param>
     <param>
-      <key>sym_rate</key>
-      <value>1.0</value>
+      <key>bw22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha</key>
-      <value>eb</value>
+      <key>center_freq22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ntaps</key>
-      <value>55*sps*nfilts</value>
+      <key>dc_offs_enb22</key>
+      <value>""</value>
+    </param>
+    <param>
+      <key>iq_imbal_enb22</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>norm_gain22</key>
+      <value>False</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>gain22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1296, 3)</value>
+      <key>ant23</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>bw23</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>freq_offset</value>
+      <key>center_freq23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>dc_offs_enb23</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Freq. Offset</value>
+      <key>iq_imbal_enb23</key>
+      <value>""</value>
     </param>
     <param>
-      <key>astype</key>
-      <value>"float"</value>
+      <key>norm_gain23</key>
+      <value>False</value>
     </param>
     <param>
-      <key>value</key>
+      <key>gain23</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>1</value>
+      <key>ant24</key>
+      <value></value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>bw24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>center_freq24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>dc_offs_enb24</key>
+      <value>""</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>iq_imbal_enb24</key>
+      <value>""</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,1,1,1</value>
+      <key>norm_gain24</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>ant25</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(600, 875)</value>
+      <key>bw25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>center_freq25</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_tab_widget</key>
     <param>
-      <key>id</key>
-      <value>tab0</value>
+      <key>dc_offs_enb25</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>iq_imbal_enb25</key>
+      <value>""</value>
     </param>
     <param>
-      <key>num_tabs</key>
-      <value>3</value>
+      <key>norm_gain25</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label0</key>
-      <value>Time</value>
+      <key>gain25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label1</key>
-      <value>Freq.</value>
+      <key>ant26</key>
+      <value></value>
     </param>
     <param>
-      <key>label2</key>
-      <value>Const.</value>
+      <key>bw26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label3</key>
-      <value>Tab 3</value>
+      <key>center_freq26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label4</key>
-      <value>Tab 4</value>
+      <key>dc_offs_enb26</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label5</key>
-      <value>Tab 5</value>
+      <key>iq_imbal_enb26</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label6</key>
-      <value>Tab 6</value>
+      <key>norm_gain26</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label7</key>
-      <value>Tab 7</value>
+      <key>gain26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label8</key>
-      <value>Tab 8</value>
+      <key>ant27</key>
+      <value></value>
     </param>
     <param>
-      <key>label9</key>
-      <value>Tab 9</value>
+      <key>bw27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label10</key>
-      <value>Tab 10</value>
+      <key>center_freq27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label11</key>
-      <value>Tab 11</value>
+      <key>dc_offs_enb27</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label12</key>
-      <value>Tab 12</value>
+      <key>iq_imbal_enb27</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label13</key>
-      <value>Tab 13</value>
+      <key>norm_gain27</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label14</key>
-      <value>Tab 14</value>
+      <key>gain27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label15</key>
-      <value>Tab 15</value>
+      <key>ant28</key>
+      <value></value>
     </param>
     <param>
-      <key>label16</key>
-      <value>Tab 16</value>
+      <key>bw28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label17</key>
-      <value>Tab 17</value>
+      <key>center_freq28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label18</key>
-      <value>Tab 18</value>
+      <key>dc_offs_enb28</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label19</key>
-      <value>Tab 19</value>
+      <key>iq_imbal_enb28</key>
+      <value>""</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>1,1,1,1</value>
+      <key>norm_gain28</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>ant29</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(488, 1003)</value>
+      <key>bw29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>center_freq29</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>noise</value>
+      <key>dc_offs_enb29</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>iq_imbal_enb29</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Noise Amp</value>
+      <key>norm_gain29</key>
+      <value>False</value>
     </param>
     <param>
-      <key>astype</key>
-      <value>"float"</value>
+      <key>gain29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>value</key>
-      <value>0</value>
+      <key>ant2</key>
+      <value></value>
     </param>
     <param>
-      <key>start</key>
+      <key>bw2</key>
       <value>0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>0.5</value>
+      <key>center_freq2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>dc_offs_enb2</key>
+      <value>""</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>iq_imbal_enb2</key>
+      <value>""</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>norm_gain2</key>
+      <value>False</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>gain2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,0,1,1</value>
+      <key>ant30</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>bw30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>center_freq30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(488, 875)</value>
+      <key>dc_offs_enb30</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>iq_imbal_enb30</key>
+      <value>""</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>time_offset</value>
+      <key>norm_gain30</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>gain30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Time Offset</value>
+      <key>ant31</key>
+      <value></value>
     </param>
     <param>
-      <key>astype</key>
-      <value>"float"</value>
+      <key>bw31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>value</key>
-      <value>1.0</value>
+      <key>center_freq31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>0.99</value>
+      <key>dc_offs_enb31</key>
+      <value>""</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>1.01</value>
+      <key>iq_imbal_enb31</key>
+      <value>""</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.00001</value>
+      <key>norm_gain31</key>
+      <value>False</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>gain31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>ant3</key>
+      <value></value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>bw3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,2,1,1</value>
+      <key>center_freq3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>dc_offs_enb3</key>
+      <value>""</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>iq_imbal_enb3</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(712, 875)</value>
+      <key>norm_gain3</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain3</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_tab_widget</key>
     <param>
-      <key>id</key>
-      <value>tab1</value>
+      <key>ant4</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>num_tabs</key>
-      <value>3</value>
+      <key>center_freq4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label0</key>
-      <value>Time</value>
+      <key>dc_offs_enb4</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label1</key>
-      <value>Freq.</value>
+      <key>iq_imbal_enb4</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label2</key>
-      <value>Const.</value>
+      <key>norm_gain4</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label3</key>
-      <value>Tab 3</value>
+      <key>gain4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label4</key>
-      <value>Tab 4</value>
+      <key>ant5</key>
+      <value></value>
     </param>
     <param>
-      <key>label5</key>
-      <value>Tab 5</value>
+      <key>bw5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label6</key>
-      <value>Tab 6</value>
+      <key>center_freq5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label7</key>
-      <value>Tab 7</value>
+      <key>dc_offs_enb5</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label8</key>
-      <value>Tab 8</value>
+      <key>iq_imbal_enb5</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label9</key>
-      <value>Tab 9</value>
+      <key>norm_gain5</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label10</key>
-      <value>Tab 10</value>
+      <key>gain5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label11</key>
-      <value>Tab 11</value>
+      <key>ant6</key>
+      <value></value>
     </param>
     <param>
-      <key>label12</key>
-      <value>Tab 12</value>
+      <key>bw6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label13</key>
-      <value>Tab 13</value>
+      <key>center_freq6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label14</key>
-      <value>Tab 14</value>
+      <key>dc_offs_enb6</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label15</key>
-      <value>Tab 15</value>
+      <key>iq_imbal_enb6</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label16</key>
-      <value>Tab 16</value>
+      <key>norm_gain6</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label17</key>
-      <value>Tab 17</value>
+      <key>gain6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label18</key>
-      <value>Tab 18</value>
+      <key>ant7</key>
+      <value></value>
     </param>
     <param>
-      <key>label19</key>
-      <value>Tab 19</value>
+      <key>bw7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>1,2,1,1</value>
+      <key>center_freq7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>dc_offs_enb7</key>
+      <value>""</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>iq_imbal_enb7</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(624, 1003)</value>
+      <key>norm_gain7</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain7</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_random_pdu</key>
     <param>
-      <key>id</key>
-      <value>blocks_random_pdu_0</value>
+      <key>ant8</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minsize</key>
-      <value>50</value>
+      <key>center_freq8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>maxsize</key>
-      <value>100</value>
+      <key>dc_offs_enb8</key>
+      <value>""</value>
     </param>
     <param>
-      <key>mask</key>
-      <value>0xFF</value>
+      <key>iq_imbal_enb8</key>
+      <value>""</value>
     </param>
     <param>
-      <key>length_modulo</key>
-      <value>2</value>
+      <key>norm_gain8</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant9</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw9</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq9</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>dc_offs_enb9</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(208, 67)</value>
+      <key>iq_imbal_enb9</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>norm_gain9</key>
+      <value>False</value>
     </param>
-  </block>
-  <block>
-    <key>digital_burst_shaper_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_burst_shaper_xx_0</value>
+      <key>gain9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>clock_rate</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>window</key>
-      <value>firdes.window(firdes.WIN_HANN, 20, 0)</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>pre_padding</key>
-      <value>50</value>
+      <key>dev_addr</key>
+      <value>addr=192.168.10.2</value>
     </param>
     <param>
-      <key>post_padding</key>
-      <value>20</value>
+      <key>dev_args</key>
+      <value>""</value>
     </param>
     <param>
-      <key>insert_phasing</key>
+      <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>length_tag_name</key>
-      <value>packet_len</value>
+      <key>_coordinate</key>
+      <value>(48, 171)</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>id</key>
+      <value>uhd_usrp_source_0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>clock_source0</key>
+      <value>gpsdo</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>sd_spec0</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(448, 379)</value>
+      <key>time_source0</key>
+      <value>gpsdo</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>clock_source1</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>digital_corr_est_cc</key>
     <param>
-      <key>id</key>
-      <value>digital_corr_est_cc_0</value>
+      <key>sd_spec1</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>time_source1</key>
+      <value></value>
     </param>
     <param>
-      <key>symbols</key>
-      <value>modulated_sync_word</value>
+      <key>clock_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>sps</key>
-      <value>sps</value>
+      <key>sd_spec2</key>
+      <value></value>
     </param>
     <param>
-      <key>mark_delay</key>
-      <value>mark_delay</value>
+      <key>time_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>threshold</key>
-      <value>0.9</value>
+      <key>clock_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>sd_spec3</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>time_source3</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>clock_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>sd_spec4</key>
+      <value></value>
     </param>
     <param>
-      <key>comment</key>
+      <key>time_source4</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(48, 619)</value>
+      <key>clock_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sd_spec5</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>mark_delay</value>
+      <key>time_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>clock_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>Mark Delay</value>
+      <key>sd_spec6</key>
+      <value></value>
     </param>
     <param>
-      <key>astype</key>
-      <value>"int"</value>
+      <key>time_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>33</value>
+      <key>clock_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>start</key>
-      <value>0</value>
+      <key>sd_spec7</key>
+      <value></value>
     </param>
     <param>
-      <key>stop</key>
-      <value>200</value>
+      <key>time_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>step</key>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>nchan</key>
       <value>1</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>num_mboards</key>
+      <value>1</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>type</key>
+      <value>fc32</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>2,2,1,1</value>
+      <key>hide_cmd_port</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>stream_args</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>stream_chans</key>
+      <value>[]</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(824, 875)</value>
+      <key>sync</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>otw</key>
+      <value></value>
     </param>
   </block>
   <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
-    <source_key>payload</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
-    <source_key>header</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>rx_mod_header</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>rx_mod_payload</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>1</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_crc32_async_bb_1</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_random_pdu_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
-    <source_key>pdus</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_message_strobe_0</source_block_id>
-    <sink_block_id>blocks_random_pdu_0</sink_block_id>
-    <source_key>strobe</source_key>
-    <sink_key>generate</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>fec_async_encoder_0</source_block_id>
-    <sink_block_id>digital_packet_format_async_1</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>chan_rx_data</source_block_id>
-    <sink_block_id>digital_corr_est_cc_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>digital_map_bb_1</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_map_bb_1</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_map_bb_1_0</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>digital_map_bb_1_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0_0</source_block_id>
-    <sink_block_id>mod_payload</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0</source_block_id>
-    <sink_block_id>mod_header</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_tagged_stream_mux_0</source_block_id>
-    <sink_block_id>digital_burst_shaper_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_burst_shaper_xx_0</source_block_id>
-    <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_corr_est_cc_0</source_block_id>
-    <sink_block_id>digital_pfb_clock_sync_xxx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>blocks_tagged_stream_multiply_length_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_tagged_stream_multiply_length_0</source_block_id>
-    <sink_block_id>channels_channel_model_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>chan_data</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_1</source_block_id>
+    <sink_block_id>packet_rx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
+    <source_block_id>digital_fll_band_edge_cc_0</source_block_id>
+    <sink_block_id>blocks_multiply_const_vxx_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
-    <source_key>0</source_key>
+    <source_block_id>packet_rx_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_1_0_0_1</sink_block_id>
+    <source_key>2</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <source_block_id>packet_rx_0</source_block_id>
+    <sink_block_id>blocks_message_debug_0_0_0</sink_block_id>
+    <source_key>pkt out</source_key>
+    <sink_key>print_pdu</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_corr_est_cc_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1_0_0_0</sink_block_id>
+    <source_block_id>packet_rx_0</source_block_id>
+    <sink_block_id>qtgui_const_sink_x_0_0_0</sink_block_id>
     <source_key>1</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
-    <sink_block_id>blocks_tag_debug_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
-    <sink_block_id>digital_costas_loop_cc_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_costas_loop_cc_0_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_costas_loop_cc_0_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0_0</sink_block_id>
+    <source_block_id>uhd_usrp_source_0</source_block_id>
+    <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_costas_loop_cc_0_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0_0_0</sink_block_id>
+    <source_block_id>uhd_usrp_source_0</source_block_id>
+    <sink_block_id>digital_fll_band_edge_cc_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
diff --git a/gr-digital/examples/packet/correlate_access_code.grc 
b/gr-digital/examples/packet/uhd_packet_rx_tun.grc
similarity index 64%
rename from gr-digital/examples/packet/correlate_access_code.grc
rename to gr-digital/examples/packet/uhd_packet_rx_tun.grc
index 3489f58..03d96f6 100644
--- a/gr-digital/examples/packet/correlate_access_code.grc
+++ b/gr-digital/examples/packet/uhd_packet_rx_tun.grc
@@ -46,7 +46,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>correlate_access_code</value>
+      <value>uhd_packet_rx_tun</value>
     </param>
     <param>
       <key>max_nouts</key>
@@ -101,7 +101,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(576, 3)</value>
+      <value>(240, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -136,7 +136,7 @@
     </param>
     <param>
       <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
+      <value>digital.psk_4()[0]</value>
     </param>
     <param>
       <key>dims</key>
@@ -144,11 +144,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>False</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(736, 3)</value>
+      <value>(560, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -160,7 +160,7 @@
     </param>
     <param>
       <key>rot_sym</key>
-      <value>2</value>
+      <value>4</value>
     </param>
     <param>
       <key>soft_dec_lut</key>
@@ -172,7 +172,7 @@
     </param>
     <param>
       <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
+      <value>digital.psk_4()[1]</value>
     </param>
   </block>
   <block>
@@ -183,7 +183,7 @@
     </param>
     <param>
       <key>const_points</key>
-      <value>digital.psk_4()[0]</value>
+      <value>digital.psk_2()[0]</value>
     </param>
     <param>
       <key>dims</key>
@@ -191,11 +191,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(896, 3)</value>
+      <value>(400, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -207,7 +207,7 @@
     </param>
     <param>
       <key>rot_sym</key>
-      <value>4</value>
+      <value>2</value>
     </param>
     <param>
       <key>soft_dec_lut</key>
@@ -219,22 +219,30 @@
     </param>
     <param>
       <key>sym_map</key>
-      <value>digital.psk_4()[1]</value>
+      <value>digital.psk_2()[1]</value>
     </param>
   </block>
   <block>
-    <key>variable</key>
+    <key>variable_qtgui_range</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>value</key>
+      <value>500</value>
+    </param>
+    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1208, 67)</value>
+      <value>(176, 595)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -242,30 +250,78 @@
     </param>
     <param>
       <key>id</key>
-      <value>eb</value>
+      <value>amp</value>
     </param>
     <param>
-      <key>value</key>
-      <value>0.22</value>
+      <key>label</key>
+      <value>Amplitude</value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>10</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>15000</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>variable_packet_formatter_default</key>
+    <key>variable_cc_decoder_def</key>
     <param>
-      <key>access_code</key>
-      <value>digital.packet_utils.default_access_code</value>
+      <key>padding</key>
+      <value>False</value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>k</key>
+      <value>k</value>
+    </param>
+    <param>
+      <key>dim1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>dim2</key>
+      <value>4</value>
+    </param>
+    <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
+    </param>
+    <param>
+      <key>state_end</key>
+      <value>-1</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1064, 3)</value>
+      <value>(680, 555)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -273,22 +329,58 @@
     </param>
     <param>
       <key>id</key>
-      <value>formatter</value>
+      <value>dec</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>"ok"</value>
+    </param>
+    <param>
+      <key>ndim</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>polys</key>
+      <value>polys</value>
+    </param>
+    <param>
+      <key>rate</key>
+      <value>rate</value>
+    </param>
+    <param>
+      <key>state_start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>mode</key>
+      <value>fec.CC_TERMINATED</value>
     </param>
   </block>
   <block>
-    <key>variable</key>
+    <key>variable_dummy_decoder_def</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>dim1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>dim2</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>_enabled</key>
-      <value>False</value>
+      <value>0</value>
+    </param>
+    <param>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(896, 131)</value>
+      <value>(496, 555)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -296,34 +388,42 @@
     </param>
     <param>
       <key>id</key>
-      <value>formatter</value>
+      <value>dec</value>
     </param>
     <param>
       <key>value</key>
-      
<value>digital.packet_formatter_counter(digital.packet_utils.default_access_code,
 Const_PLD.bits_per_symbol())</value>
+      <value>"ok"</value>
+    </param>
+    <param>
+      <key>ndim</key>
+      <value>0</value>
     </param>
   </block>
   <block>
-    <key>variable_qtgui_range</key>
+    <key>variable_repetition_decoder_def</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(136, 843)</value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,1,1,1</value>
+      <key>_coordinate</key>
+      <value>(480, 635)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -331,62 +431,50 @@
     </param>
     <param>
       <key>id</key>
-      <value>freq_offset</value>
-    </param>
-    <param>
-      <key>label</key>
-      <value>Freq. Offset</value>
-    </param>
-    <param>
-      <key>min_len</key>
-      <value>200</value>
-    </param>
-    <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
-    </param>
-    <param>
-      <key>start</key>
-      <value>-1</value>
+      <value>dec</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>value</key>
+      <value>"ok"</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>1</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rangeType</key>
-      <value>float</value>
+      <key>rep</key>
+      <value>rep</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>prob</key>
+      <value>0.5</value>
     </param>
   </block>
   <block>
-    <key>variable_qtgui_range</key>
+    <key>variable_dummy_decoder_def</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>33</value>
+      <key>dim1</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(360, 843)</value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>2,2,1,1</value>
+      <key>_coordinate</key>
+      <value>(592, 475)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -394,62 +482,61 @@
     </param>
     <param>
       <key>id</key>
-      <value>mark_delay</value>
+      <value>dec_hdr</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Mark Delay</value>
+      <key>value</key>
+      <value>"ok"</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>start</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>step</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(152, 75)</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>200</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rangeType</key>
-      <value>int</value>
+      <key>id</key>
+      <value>eb</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter</value>
+      <key>value</key>
+      <value>0.22</value>
     </param>
   </block>
   <block>
-    <key>variable_modulate_vector</key>
+    <key>variable_packet_formatter_default</key>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>access_code</key>
+      <value>digital.packet_utils.default_access_code</value>
     </param>
     <param>
-      <key>data</key>
-      <value>preamble</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>taps</key>
-      <value>[1]</value>
-    </param>
-    <param>
       <key>_coordinate</key>
-      <value>(1432, 131)</value>
+      <value>(728, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -457,11 +544,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>modulated_sync_word</value>
+      <value>formatter</value>
     </param>
     <param>
-      <key>mod</key>
-      <value>rxmod</value>
+      <key>threshold</key>
+      <value>0</value>
     </param>
   </block>
   <block>
@@ -472,11 +559,11 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>False</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1136, 67)</value>
+      <value>(728, 91)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -484,11 +571,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>nfilts</value>
+      <value>formatter</value>
     </param>
     <param>
       <key>value</key>
-      <value>32</value>
+      
<value>digital.packet_formatter_counter(digital.packet_utils.default_access_code,
 Const_PLD.bits_per_symbol())</value>
     </param>
   </block>
   <block>
@@ -499,7 +586,7 @@
     </param>
     <param>
       <key>value</key>
-      <value>0</value>
+      <value>484e6</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -507,11 +594,11 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(24, 843)</value>
+      <value>(176, 467)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>0,0,1,1</value>
+      <value>0,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -519,11 +606,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>noise</value>
+      <value>freq</value>
     </param>
     <param>
       <key>label</key>
-      <value>Noise Amp</value>
+      <value>Frequency</value>
     </param>
     <param>
       <key>min_len</key>
@@ -535,15 +622,15 @@
     </param>
     <param>
       <key>start</key>
-      <value>0</value>
+      <value>400e6</value>
     </param>
     <param>
       <key>step</key>
-      <value>0.001</value>
+      <value>100</value>
     </param>
     <param>
       <key>stop</key>
-      <value>5</value>
+      <value>500e6</value>
     </param>
     <param>
       <key>rangeType</key>
@@ -555,18 +642,26 @@
     </param>
   </block>
   <block>
-    <key>variable</key>
+    <key>variable_qtgui_range</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>value</key>
+      <value>20</value>
+    </param>
+    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1432, 3)</value>
+      <value>(48, 595)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1,0,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -574,15 +669,43 @@
     </param>
     <param>
       <key>id</key>
-      <value>preamble</value>
+      <value>gain</value>
     </param>
     <param>
-      <key>value</key>
-      <value>[0xac, 0xdd, 0xa4, 0xe2, 0xf2, 0x8c, 0x20, 0xfc]</value>
+      <key>label</key>
+      <value>Gain</value>
+    </param>
+    <param>
+      <key>min_len</key>
+      <value>200</value>
+    </param>
+    <param>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>0.5</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>31.5</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>variable_rrc_filter_taps</key>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
@@ -592,51 +715,74 @@
       <value>True</value>
     </param>
     <param>
-      <key>alpha</key>
-      <value>eb</value>
-    </param>
-    <param>
       <key>_coordinate</key>
-      <value>(1296, 131)</value>
+      <value>(904, 619)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>gain</key>
-      <value>nfilts</value>
+      <key>id</key>
+      <value>k</value>
     </param>
     <param>
-      <key>id</key>
-      <value>rx_rrc_taps</value>
+      <key>value</key>
+      <value>7</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>ntaps</key>
-      <value>5*sps*nfilts</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>samp_rate</key>
+      <key>_coordinate</key>
+      <value>(80, 75)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>id</key>
       <value>nfilts</value>
     </param>
     <param>
-      <key>sym_rate</key>
-      <value>1.0</value>
+      <key>value</key>
+      <value>32</value>
     </param>
   </block>
   <block>
-    <key>variable</key>
+    <key>variable_qtgui_check_box</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>value</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
+      <key>false</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1432, 67)</value>
+      <value>(312, 635)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value></value>
     </param>
     <param>
       <key>_rotation</key>
@@ -644,11 +790,19 @@
     </param>
     <param>
       <key>id</key>
-      <value>rxmod</value>
+      <value>on</value>
     </param>
     <param>
-      <key>value</key>
-      <value>digital.generic_mod(Const_HDR, False, sps, True, eb, False, 
False)</value>
+      <key>label</key>
+      <value>On</value>
+    </param>
+    <param>
+      <key>true</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>type</key>
+      <value>int</value>
     </param>
   </block>
   <block>
@@ -663,7 +817,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1064, 67)</value>
+      <value>(952, 683)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -671,34 +825,26 @@
     </param>
     <param>
       <key>id</key>
-      <value>sps</value>
+      <value>polys</value>
     </param>
     <param>
       <key>value</key>
-      <value>2</value>
+      <value>[109, 79]</value>
     </param>
   </block>
   <block>
-    <key>variable_qtgui_range</key>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>1.0</value>
-    </param>
-    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(248, 843)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>0,2,1,1</value>
+      <value>(976, 619)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -706,39 +852,38 @@
     </param>
     <param>
       <key>id</key>
-      <value>time_offset</value>
+      <value>rate</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Time Offset</value>
-    </param>
-    <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>value</key>
+      <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>start</key>
-      <value>0.99</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.00001</value>
+      <key>_coordinate</key>
+      <value>(880, 683)</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>1.01</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rangeType</key>
-      <value>float</value>
+      <key>id</key>
+      <value>rep</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>value</key>
+      <value>3</value>
     </param>
   </block>
   <block>
@@ -757,7 +902,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1296, 3)</value>
+      <value>(952, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -769,15 +914,15 @@
     </param>
     <param>
       <key>id</key>
-      <value>tx_rrc_taps</value>
+      <value>rx_rrc_taps</value>
     </param>
     <param>
       <key>ntaps</key>
-      <value>5*sps*nfilts</value>
+      <value>11*sps*nfilts</value>
     </param>
     <param>
       <key>samp_rate</key>
-      <value>nfilts</value>
+      <value>sps*nfilts</value>
     </param>
     <param>
       <key>sym_rate</key>
@@ -785,18 +930,14 @@
     </param>
   </block>
   <block>
-    <key>blocks_message_debug</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
+    <key>variable_qtgui_range</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>value</key>
+      <value>1000e3</value>
     </param>
     <param>
       <key>_enabled</key>
@@ -804,7 +945,11 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(896, 593)</value>
+      <value>(48, 467)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>0,0,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -812,21 +957,45 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_message_debug_0</value>
+      <value>samp_rate</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_message_strobe</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>label</key>
+      <value>Sample Rate</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
+      <value>200e3</value>
+    </param>
+    <param>
+      <key>step</key>
+      <value>200e3</value>
+    </param>
+    <param>
+      <key>stop</key>
+      <value>10e6</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
+    </param>
+  </block>
+  <block>
+    <key>variable</key>
+    <param>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -835,7 +1004,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(24, 83)</value>
+      <value>(8, 75)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -843,27 +1012,46 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_message_strobe_0</value>
+      <value>sps</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>value</key>
+      <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_message_debug</key>
     <param>
-      <key>msg</key>
-      <value>pmt.intern("TEST")</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>affinity</key>
+      <value></value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
+      <key>_coordinate</key>
+      <value>(1120, 73)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>period</key>
-      <value>500</value>
+      <key>id</key>
+      <value>blocks_message_debug_0</value>
     </param>
   </block>
   <block>
-    <key>blocks_pdu_to_tagged_stream</key>
+    <key>blocks_multiply_const_vxx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -873,16 +1061,20 @@
       <value></value>
     </param>
     <param>
+      <key>const</key>
+      <value>amp</value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(336, 299)</value>
+      <value>(320, 163)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -890,15 +1082,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
+      <value>blocks_multiply_const_vxx_0</value>
     </param>
     <param>
       <key>type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <value>complex</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -908,9 +1096,13 @@
       <key>minoutbuf</key>
       <value>0</value>
     </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
   </block>
   <block>
-    <key>blocks_pdu_to_tagged_stream</key>
+    <key>blocks_multiply_const_vxx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -920,6 +1112,10 @@
       <value></value>
     </param>
     <param>
+      <key>const</key>
+      <value>on</value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
@@ -929,7 +1125,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(336, 227)</value>
+      <value>(528, 307)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -937,15 +1133,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0_0</value>
+      <value>blocks_multiply_const_vxx_1</value>
     </param>
     <param>
       <key>type</key>
-      <value>byte</value>
-    </param>
-    <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <value>complex</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -955,18 +1147,18 @@
       <key>minoutbuf</key>
       <value>0</value>
     </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
+    </param>
   </block>
   <block>
-    <key>blocks_random_pdu</key>
+    <key>blocks_tuntap_pdu</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>mask</key>
-      <value>0xFF</value>
-    </param>
-    <param>
       <key>comment</key>
       <value></value>
     </param>
@@ -979,8 +1171,12 @@
       <value>True</value>
     </param>
     <param>
+      <key>istunflag</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(208, 67)</value>
+      <value>(992, 179)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -988,39 +1184,27 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_random_pdu_0</value>
+      <value>blocks_tuntap_pdu_0</value>
     </param>
     <param>
-      <key>length_modulo</key>
-      <value>2</value>
+      <key>ifn</key>
+      <value>tun0</value>
     </param>
     <param>
-      <key>maxsize</key>
-      <value>20</value>
+      <key>mtu</key>
+      <value>10000</value>
     </param>
     <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>minsize</key>
-      <value>20</value>
-    </param>
-    <param>
       <key>minoutbuf</key>
       <value>0</value>
     </param>
   </block>
   <block>
-    <key>blocks_repack_bits_bb</key>
-    <param>
-      <key>k</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>l</key>
-      <value>Const_HDR.bits_per_symbol()</value>
-    </param>
+    <key>digital_fll_band_edge_cc</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -1035,15 +1219,15 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>0</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>rolloff</key>
+      <value>eb</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(560, 219)</value>
+      <value>(320, 313)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -1051,11 +1235,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
+      <value>digital_fll_band_edge_cc_0</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>w</key>
+      <value>0.05</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -1066,20 +1250,20 @@
       <value>0</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>filter_size</key>
+      <value>44</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>samps_per_sym</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_PLD.bits_per_symbol()</value>
+      <key>type</key>
+      <value>cc</value>
     </param>
+  </block>
+  <block>
+    <key>packet_rx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -1094,27 +1278,31 @@
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>eb</key>
+      <value>eb</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(560, 291)</value>
+      <value>(696, 201)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
+      <key>hdr_dec</key>
+      <value>dec_hdr</value>
+    </param>
+    <param>
+      <key>hdr_const</key>
+      <value>Const_HDR</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>id</key>
+      <value>packet_rx_0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
@@ -1125,12 +1313,32 @@
       <value>0</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>formatter</key>
+      <value>formatter</value>
+    </param>
+    <param>
+      <key>pld_dec</key>
+      <value>dec</value>
+    </param>
+    <param>
+      <key>pld_const</key>
+      <value>Const_PLD</value>
+    </param>
+    <param>
+      <key>psf_taps</key>
+      <value>rx_rrc_taps</value>
+    </param>
+    <param>
+      <key>sps</key>
+      <value>sps</value>
     </param>
   </block>
   <block>
-    <key>blocks_tag_debug</key>
+    <key>qtgui_const_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
+    </param>
     <param>
       <key>alias</key>
       <value></value>
@@ -1144,342 +1352,336 @@
       <value></value>
     </param>
     <param>
-      <key>display</key>
-      <value>True</value>
-    </param>
-    <param>
       <key>_enabled</key>
       <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(624, 515)</value>
+      <value>(504, 147)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>blocks_tag_debug_0</value>
-    </param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>id</key>
+      <value>qtgui_const_sink_x_0</value>
     </param>
     <param>
-      <key>filter</key>
-      <value>""</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>name</key>
+      <key>alpha1</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color1</key>
+      <value>"blue"</value>
+    </param>
+    <param>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>num_inputs</key>
-      <value>1</value>
+      <key>marker1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>style1</key>
+      <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_multiply_length</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>color10</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(936, 417)</value>
+      <key>marker10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style10</key>
       <value>0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_multiply_length_0</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>c</key>
-      <value>sps</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>marker2</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>style2</key>
       <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
+      <key>width2</key>
       <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_mux</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>color3</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(216, 401)</value>
+      <key>style3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_mux_0</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>color4</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>marker4</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>style4</key>
       <value>0</value>
     </param>
     <param>
-      <key>ninputs</key>
-      <value>2</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tag_preserve_head_pos</key>
-      <value>0</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>color5</key>
+      <value>"red"</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>comment</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1216, 523)</value>
+      <key>style5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>id</key>
-      <value>chan_data</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Chan Data</value>
+      <key>color6</key>
+      <value>"red"</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
     <param>
-      <key>comment</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(48, 571)</value>
+      <key>style6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>id</key>
-      <value>chan_rx_data</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Chan Data</value>
+      <key>color7</key>
+      <value>"red"</value>
     </param>
-  </block>
-  <block>
-    <key>channels_channel_model</key>
     <param>
-      <key>alias</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>block_tags</key>
-      <value>True</value>
+      <key>marker7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>style7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>epsilon</key>
-      <value>time_offset</value>
+      <key>color8</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>freq_offset</key>
-      <value>freq_offset</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1224, 387)</value>
+      <key>marker8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style8</key>
       <value>0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>channels_channel_model_0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>color9</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>noise_voltage</key>
-      <value>noise</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>seed</key>
+      <key>marker9</key>
       <value>0</value>
     </param>
     <param>
-      <key>taps</key>
-      <value>1.0</value>
+      <key>style9</key>
+      <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_burst_shaper_xx</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>size</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(448, 379)</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>tr_level</key>
+      <value>0.5</value>
     </param>
     <param>
-      <key>id</key>
-      <value>digital_burst_shaper_xx_0</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_NORM</value>
     </param>
     <param>
-      <key>insert_phasing</key>
-      <value>True</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>length_tag_name</key>
-      <value>packet_len</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>update_time</key>
+      <value>0.01</value>
     </param>
     <param>
-      <key>post_padding</key>
-      <value>20</value>
+      <key>xmax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>pre_padding</key>
-      <value>20</value>
+      <key>xmin</key>
+      <value>-2</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>window</key>
-      <value>firdes.window(firdes.WIN_HANN, 20, 0)</value>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
   </block>
   <block>
-    <key>digital_chunks_to_symbols_xx</key>
+    <key>qtgui_const_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
+    </param>
     <param>
       <key>alias</key>
       <value></value>
@@ -1493,409 +1695,336 @@
       <value></value>
     </param>
     <param>
-      <key>dimension</key>
+      <key>_enabled</key>
       <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>_coordinate</key>
+      <value>(992, 267)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 219)</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0</value>
+      <value>qtgui_const_sink_x_0_0_0</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>num_ports</key>
-      <value>1</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>marker1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_HDR.points()</value>
+      <key>style1</key>
+      <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>color10</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>dimension</key>
-      <value>1</value>
+      <key>marker10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>style10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 291)</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0_0</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>marker2</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>style2</key>
       <value>0</value>
     </param>
     <param>
-      <key>num_ports</key>
+      <key>width2</key>
       <value>1</value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_PLD.points()</value>
+      <key>color3</key>
+      <value>"red"</value>
     </param>
-  </block>
-  <block>
-    <key>digital_corr_est_cc</key>
     <param>
-      <key>alias</key>
+      <key>label3</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>marker3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>style3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(48, 619)</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color4</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>id</key>
-      <value>digital_corr_est_cc_0</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>marker4</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>style4</key>
       <value>0</value>
     </param>
     <param>
-      <key>sps</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>symbols</key>
-      <value>modulated_sync_word</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>mark_delay</key>
-      <value>mark_delay</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>threshold</key>
-      <value>0.9</value>
+      <key>color5</key>
+      <value>"red"</value>
     </param>
-  </block>
-  <block>
-    <key>digital_crc32_async_bb</key>
     <param>
-      <key>alias</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>marker5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>style5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(424, 91)</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color6</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>id</key>
-      <value>digital_crc32_async_bb_1</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>marker6</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>style6</key>
       <value>0</value>
     </param>
     <param>
-      <key>check</key>
-      <value>False</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>color7</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 227)</value>
+      <key>style7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>id</key>
-      <value>digital_map_bb_1</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_HDR.pre_diff_code()</value>
+      <key>color8</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>label8</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker8</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>style8</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>color9</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 299)</value>
+      <key>marker9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style9</key>
       <value>0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>digital_map_bb_1_0</value>
+      <key>width9</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_PLD.pre_diff_code()</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>size</key>
+      <value>800</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_packet_format_async</key>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>formatter</key>
-      <value>formatter</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(80, 241)</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>xmax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>id</key>
-      <value>digital_packet_format_async_1</value>
+      <key>xmin</key>
+      <value>-2</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
   </block>
   <block>
-    <key>digital_pfb_clock_sync_xxx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>filter_size</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(336, 555)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_pfb_clock_sync_xxx_0</value>
-    </param>
-    <param>
-      <key>init_phase</key>
-      <value>nfilts/2</value>
-    </param>
-    <param>
-      <key>loop_bw</key>
-      <value>6.28/100.0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>max_dev</key>
-      <value>1.5</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>osps</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>sps</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>rx_rrc_taps</value>
-    </param>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>type</key>
-      <value>ccf</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
-  </block>
-  <block>
-    <key>digital_probe_mpsk_snr_est_c</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -1905,192 +2034,28 @@
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>alpha</key>
-      <value>0.001</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(624, 593)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>digital_probe_mpsk_snr_est_c_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>msg_nsamples</key>
-      <value>1000</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>2</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1120, 227)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>mod_header</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(1120, 299)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>mod_payload</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
-    </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>entags</key>
       <value>True</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(680, 387)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
-    </param>
-    <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>minoutbuf</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
-    </param>
-    <param>
-      <key>rrate</key>
-      <value>sps</value>
-    </param>
-    <param>
-      <key>samp_delay</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>atten</key>
-      <value>100</value>
-    </param>
-    <param>
-      <key>taps</key>
-      <value>tx_rrc_taps</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>ccf</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1480, 515)</value>
+      <value>(504, 211)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>address@hidden</value>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -2102,11 +2067,11 @@
     </param>
     <param>
       <key>id</key>
-      <value>qtgui_const_sink_x_0</value>
+      <value>qtgui_time_sink_x_0</value>
     </param>
     <param>
       <key>legend</key>
-      <value>False</value>
+      <value>True</value>
     </param>
     <param>
       <key>alpha1</key>
@@ -2122,11 +2087,11 @@
     </param>
     <param>
       <key>marker1</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style1</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width1</key>
@@ -2138,7 +2103,7 @@
     </param>
     <param>
       <key>color10</key>
-      <value>"red"</value>
+      <value>"blue"</value>
     </param>
     <param>
       <key>label10</key>
@@ -2146,11 +2111,11 @@
     </param>
     <param>
       <key>marker10</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style10</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width10</key>
@@ -2170,11 +2135,11 @@
     </param>
     <param>
       <key>marker2</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style2</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width2</key>
@@ -2186,7 +2151,7 @@
     </param>
     <param>
       <key>color3</key>
-      <value>"red"</value>
+      <value>"green"</value>
     </param>
     <param>
       <key>label3</key>
@@ -2194,11 +2159,11 @@
     </param>
     <param>
       <key>marker3</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style3</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width3</key>
@@ -2210,7 +2175,7 @@
     </param>
     <param>
       <key>color4</key>
-      <value>"red"</value>
+      <value>"black"</value>
     </param>
     <param>
       <key>label4</key>
@@ -2218,11 +2183,11 @@
     </param>
     <param>
       <key>marker4</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style4</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width4</key>
@@ -2234,7 +2199,7 @@
     </param>
     <param>
       <key>color5</key>
-      <value>"red"</value>
+      <value>"cyan"</value>
     </param>
     <param>
       <key>label5</key>
@@ -2242,11 +2207,11 @@
     </param>
     <param>
       <key>marker5</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style5</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width5</key>
@@ -2258,7 +2223,7 @@
     </param>
     <param>
       <key>color6</key>
-      <value>"red"</value>
+      <value>"magenta"</value>
     </param>
     <param>
       <key>label6</key>
@@ -2266,11 +2231,11 @@
     </param>
     <param>
       <key>marker6</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style6</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width6</key>
@@ -2282,7 +2247,7 @@
     </param>
     <param>
       <key>color7</key>
-      <value>"red"</value>
+      <value>"yellow"</value>
     </param>
     <param>
       <key>label7</key>
@@ -2290,11 +2255,11 @@
     </param>
     <param>
       <key>marker7</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style7</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width7</key>
@@ -2306,7 +2271,7 @@
     </param>
     <param>
       <key>color8</key>
-      <value>"red"</value>
+      <value>"dark red"</value>
     </param>
     <param>
       <key>label8</key>
@@ -2314,11 +2279,11 @@
     </param>
     <param>
       <key>marker8</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style8</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width8</key>
@@ -2330,7 +2295,7 @@
     </param>
     <param>
       <key>color9</key>
-      <value>"red"</value>
+      <value>"dark green"</value>
     </param>
     <param>
       <key>label9</key>
@@ -2338,11 +2303,11 @@
     </param>
     <param>
       <key>marker9</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style9</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width9</key>
@@ -2361,16 +2326,24 @@
       <value>1024</value>
     </param>
     <param>
+      <key>srate</key>
+      <value>samp_rate</value>
+    </param>
+    <param>
       <key>tr_chan</key>
       <value>0</value>
     </param>
     <param>
+      <key>tr_delay</key>
+      <value>0.5e-3</value>
+    </param>
+    <param>
       <key>tr_level</key>
-      <value>0.0</value>
+      <value>0.5</value>
     </param>
     <param>
       <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <value>qtgui.TRIG_MODE_NORM</value>
     </param>
     <param>
       <key>tr_slope</key>
@@ -2378,7 +2351,7 @@
     </param>
     <param>
       <key>tr_tag</key>
-      <value>packet_len</value>
+      <value>""</value>
     </param>
     <param>
       <key>type</key>
@@ -2386,15 +2359,15 @@
     </param>
     <param>
       <key>update_time</key>
-      <value>0.10</value>
+      <value>0.01</value>
     </param>
     <param>
-      <key>xmax</key>
-      <value>2</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>xmin</key>
-      <value>-2</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
       <key>ymax</key>
@@ -2406,7 +2379,7 @@
     </param>
   </block>
   <block>
-    <key>qtgui_const_sink_x</key>
+    <key>qtgui_time_sink_x</key>
     <param>
       <key>autoscale</key>
       <value>False</value>
@@ -2420,20 +2393,28 @@
       <value></value>
     </param>
     <param>
+      <key>ctrlpanel</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>entags</key>
       <value>True</value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>1</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(592, 771)</value>
+      <value>(992, 331)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>address@hidden</value>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -2445,7 +2426,7 @@
     </param>
     <param>
       <key>id</key>
-      <value>qtgui_const_sink_x_0_0_0</value>
+      <value>qtgui_time_sink_x_1_0_0_1</value>
     </param>
     <param>
       <key>legend</key>
@@ -2469,7 +2450,7 @@
     </param>
     <param>
       <key>style1</key>
-      <value>0</value>
+      <value>3</value>
     </param>
     <param>
       <key>width1</key>
@@ -2481,7 +2462,7 @@
     </param>
     <param>
       <key>color10</key>
-      <value>"red"</value>
+      <value>"blue"</value>
     </param>
     <param>
       <key>label10</key>
@@ -2489,11 +2470,11 @@
     </param>
     <param>
       <key>marker10</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style10</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width10</key>
@@ -2513,11 +2494,11 @@
     </param>
     <param>
       <key>marker2</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style2</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width2</key>
@@ -2529,7 +2510,7 @@
     </param>
     <param>
       <key>color3</key>
-      <value>"red"</value>
+      <value>"green"</value>
     </param>
     <param>
       <key>label3</key>
@@ -2537,11 +2518,11 @@
     </param>
     <param>
       <key>marker3</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style3</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width3</key>
@@ -2553,7 +2534,7 @@
     </param>
     <param>
       <key>color4</key>
-      <value>"red"</value>
+      <value>"black"</value>
     </param>
     <param>
       <key>label4</key>
@@ -2561,11 +2542,11 @@
     </param>
     <param>
       <key>marker4</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style4</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width4</key>
@@ -2577,7 +2558,7 @@
     </param>
     <param>
       <key>color5</key>
-      <value>"red"</value>
+      <value>"cyan"</value>
     </param>
     <param>
       <key>label5</key>
@@ -2585,11 +2566,11 @@
     </param>
     <param>
       <key>marker5</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style5</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width5</key>
@@ -2601,7 +2582,7 @@
     </param>
     <param>
       <key>color6</key>
-      <value>"red"</value>
+      <value>"magenta"</value>
     </param>
     <param>
       <key>label6</key>
@@ -2609,11 +2590,11 @@
     </param>
     <param>
       <key>marker6</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style6</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width6</key>
@@ -2625,7 +2606,7 @@
     </param>
     <param>
       <key>color7</key>
-      <value>"red"</value>
+      <value>"yellow"</value>
     </param>
     <param>
       <key>label7</key>
@@ -2633,11 +2614,11 @@
     </param>
     <param>
       <key>marker7</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style7</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width7</key>
@@ -2649,7 +2630,7 @@
     </param>
     <param>
       <key>color8</key>
-      <value>"red"</value>
+      <value>"dark red"</value>
     </param>
     <param>
       <key>label8</key>
@@ -2657,11 +2638,11 @@
     </param>
     <param>
       <key>marker8</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style8</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width8</key>
@@ -2673,7 +2654,7 @@
     </param>
     <param>
       <key>color9</key>
-      <value>"red"</value>
+      <value>"dark green"</value>
     </param>
     <param>
       <key>label9</key>
@@ -2681,11 +2662,11 @@
     </param>
     <param>
       <key>marker9</key>
-      <value>0</value>
+      <value>-1</value>
     </param>
     <param>
       <key>style9</key>
-      <value>0</value>
+      <value>1</value>
     </param>
     <param>
       <key>width9</key>
@@ -2701,19 +2682,27 @@
     </param>
     <param>
       <key>size</key>
-      <value>800</value>
+      <value>1250</value>
+    </param>
+    <param>
+      <key>srate</key>
+      <value>1</value>
     </param>
     <param>
       <key>tr_chan</key>
       <value>0</value>
     </param>
     <param>
+      <key>tr_delay</key>
+      <value>25</value>
+    </param>
+    <param>
       <key>tr_level</key>
       <value>0.0</value>
     </param>
     <param>
       <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <value>qtgui.TRIG_MODE_TAG</value>
     </param>
     <param>
       <key>tr_slope</key>
@@ -2721,7 +2710,7 @@
     </param>
     <param>
       <key>tr_tag</key>
-      <value>""</value>
+      <value>"time_est"</value>
     </param>
     <param>
       <key>type</key>
@@ -2732,12 +2721,12 @@
       <value>0.10</value>
     </param>
     <param>
-      <key>xmax</key>
-      <value>2</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>xmin</key>
-      <value>-2</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
       <key>ymax</key>
@@ -2749,2146 +2738,1378 @@
     </param>
   </block>
   <block>
-    <key>qtgui_freq_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>average</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>bw</key>
-      <value>1</value>
-    </param>
+    <key>qtgui_tab_widget</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>fc</key>
-      <value>0</value>
-    </param>
-    <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
-    </param>
-    <param>
       <key>_coordinate</key>
-      <value>(1480, 435)</value>
+      <value>(312, 467)</value>
     </param>
     <param>
       <key>gui_hint</key>
-      <value>address@hidden</value>
+      <value>2,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>id</key>
+      <value>tab0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+      <key>label0</key>
+      <value>Time</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>label1</key>
+      <value>Const.</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>label10</key>
+      <value>Tab 10</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>label11</key>
+      <value>Tab 11</value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
+      <key>label12</key>
+      <value>Tab 12</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>label13</key>
+      <value>Tab 13</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>label14</key>
+      <value>Tab 14</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>label15</key>
+      <value>Tab 15</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>label16</key>
+      <value>Tab 16</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>label17</key>
+      <value>Tab 17</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>label18</key>
+      <value>Tab 18</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>label19</key>
+      <value>Tab 19</value>
     </param>
     <param>
       <key>label2</key>
-      <value></value>
+      <value>Const.</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>label3</key>
+      <value>Tab 3</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>label4</key>
+      <value>Tab 4</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>label5</key>
+      <value>Tab 5</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>label6</key>
+      <value>Tab 6</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>label7</key>
+      <value>Tab 7</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>label8</key>
+      <value>Tab 8</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>label9</key>
+      <value>Tab 9</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>num_tabs</key>
+      <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_tab_widget</key>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(312, 547)</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>gui_hint</key>
+      <value>2,0,1,1</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>id</key>
+      <value>tab1</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>label0</key>
+      <value>Const</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>label1</key>
+      <value>Time</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>label10</key>
+      <value>Tab 10</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>label11</key>
+      <value>Tab 11</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>label12</key>
+      <value>Tab 12</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>label13</key>
+      <value>Tab 13</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>label14</key>
+      <value>Tab 14</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>label15</key>
+      <value>Tab 15</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>label16</key>
+      <value>Tab 16</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>label17</key>
+      <value>Tab 17</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>label18</key>
+      <value>Tab 18</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>label19</key>
+      <value>Tab 19</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>label2</key>
+      <value>Const.</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>label3</key>
+      <value>Tab 3</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>label4</key>
+      <value>Tab 4</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>label5</key>
+      <value>Tab 5</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>label6</key>
+      <value>Tab 6</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>label7</key>
+      <value>Tab 7</value>
     </param>
     <param>
-      <key>showports</key>
-      <value>True</value>
+      <key>label8</key>
+      <value>Tab 8</value>
     </param>
     <param>
-      <key>freqhalf</key>
-      <value>True</value>
+      <key>label9</key>
+      <value>Tab 9</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>num_tabs</key>
+      <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>uhd_usrp_source</key>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>ant0</key>
+      <value>TX/RX</value>
     </param>
     <param>
-      <key>tr_tag</key>
+      <key>bw0</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq0</key>
+      <value>uhd.tune_request(freq, samp_rate/2.0)</value>
+    </param>
+    <param>
+      <key>dc_offs_enb0</key>
       <value>""</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>iq_imbal_enb0</key>
+      <value>""</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>norm_gain0</key>
+      <value>False</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>gain0</key>
+      <value>gain</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Relative Gain</value>
+      <key>ant10</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>bw10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>center_freq10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>units</key>
-      <value>dB</value>
+      <key>dc_offs_enb10</key>
+      <value>""</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>iq_imbal_enb10</key>
+      <value>""</value>
     </param>
     <param>
-      <key>average</key>
-      <value>1.0</value>
+      <key>norm_gain10</key>
+      <value>False</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>1</value>
+      <key>gain10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant11</key>
       <value></value>
     </param>
     <param>
-      <key>fc</key>
+      <key>bw11</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>center_freq11</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
+      <key>dc_offs_enb11</key>
+      <value>""</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>iq_imbal_enb11</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>norm_gain11</key>
+      <value>False</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>gain11</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(608, 691)</value>
+      <key>ant12</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>bw12</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>center_freq12</key>
       <value>0</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>dc_offs_enb12</key>
+      <value>""</value>
     </param>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0_0</value>
+      <key>iq_imbal_enb12</key>
+      <value>""</value>
     </param>
     <param>
-      <key>legend</key>
+      <key>norm_gain12</key>
       <value>False</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>gain12</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>ant13</key>
+      <value></value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
+      <key>bw13</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>center_freq13</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>dc_offs_enb13</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>iq_imbal_enb13</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>norm_gain13</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>gain13</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>ant14</key>
+      <value></value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>bw14</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>center_freq14</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>dc_offs_enb14</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>iq_imbal_enb14</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>norm_gain14</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>gain14</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>ant15</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>bw15</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>center_freq15</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>dc_offs_enb15</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>iq_imbal_enb15</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>norm_gain15</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>gain15</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label5</key>
+      <key>ant16</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>bw16</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>center_freq16</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>dc_offs_enb16</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>iq_imbal_enb16</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>norm_gain16</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>gain16</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>ant17</key>
+      <value></value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>bw17</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>center_freq17</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>dc_offs_enb17</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>iq_imbal_enb17</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>norm_gain17</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>gain17</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>ant18</key>
+      <value></value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>bw18</key>
+      <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq18</key>
       <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>dc_offs_enb18</key>
+      <value>""</value>
     </param>
     <param>
-      <key>name</key>
+      <key>iq_imbal_enb18</key>
       <value>""</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>norm_gain18</key>
+      <value>False</value>
     </param>
     <param>
-      <key>showports</key>
-      <value>True</value>
+      <key>gain18</key>
+      <value>0</value>
     </param>
     <param>
-      <key>freqhalf</key>
-      <value>True</value>
+      <key>ant19</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>bw19</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>center_freq19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>dc_offs_enb19</key>
+      <value>""</value>
     </param>
     <param>
-      <key>tr_tag</key>
+      <key>iq_imbal_enb19</key>
       <value>""</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>norm_gain19</key>
+      <value>False</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>gain19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>ant1</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>Relative Gain</value>
+      <key>bw1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>center_freq1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>dc_offs_enb1</key>
+      <value>""</value>
     </param>
     <param>
-      <key>units</key>
-      <value>dB</value>
+      <key>iq_imbal_enb1</key>
+      <value>""</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>autoscale</key>
+      <key>norm_gain1</key>
       <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>ant20</key>
       <value></value>
     </param>
     <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
+      <key>bw20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>center_freq20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>entags</key>
-      <value>True</value>
+      <key>dc_offs_enb20</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>iq_imbal_enb20</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1480, 355)</value>
+      <key>norm_gain20</key>
+      <value>False</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>gain20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>ant21</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw21</key>
       <value>0</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>center_freq21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
+      <key>dc_offs_enb21</key>
+      <value>""</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>iq_imbal_enb21</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>norm_gain21</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>gain21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>ant22</key>
       <value></value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>bw22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>1</value>
+      <key>center_freq22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>dc_offs_enb22</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>iq_imbal_enb22</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>norm_gain22</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>gain22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>ant23</key>
+      <value></value>
     </param>
     <param>
-      <key>style10</key>
-      <value>1</value>
+      <key>bw23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>center_freq23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>dc_offs_enb23</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>iq_imbal_enb23</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>norm_gain23</key>
+      <value>False</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>gain23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>1</value>
+      <key>ant24</key>
+      <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>bw24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>center_freq24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>dc_offs_enb24</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>iq_imbal_enb24</key>
+      <value>""</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>norm_gain24</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>gain24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>ant25</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>bw25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>center_freq25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>dc_offs_enb25</key>
+      <value>""</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>iq_imbal_enb25</key>
+      <value>""</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>norm_gain25</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>gain25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>ant26</key>
+      <value></value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>bw26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>center_freq26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>dc_offs_enb26</key>
+      <value>""</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>iq_imbal_enb26</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>norm_gain26</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>gain26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>ant27</key>
+      <value></value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>bw27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>center_freq27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>dc_offs_enb27</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>iq_imbal_enb27</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>norm_gain27</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>gain27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label7</key>
+      <key>ant28</key>
       <value></value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>bw28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>center_freq28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>dc_offs_enb28</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>iq_imbal_enb28</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>norm_gain28</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>gain28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>ant29</key>
+      <value></value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>bw29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>center_freq29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>dc_offs_enb29</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>iq_imbal_enb29</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>norm_gain29</key>
+      <value>False</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>gain29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>ant2</key>
+      <value></value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>bw2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>name</key>
+      <key>center_freq2</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>dc_offs_enb2</key>
       <value>""</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>iq_imbal_enb2</key>
+      <value>""</value>
     </param>
     <param>
-      <key>size</key>
-      <value>2500</value>
+      <key>norm_gain2</key>
+      <value>False</value>
     </param>
     <param>
-      <key>srate</key>
-      <value>1</value>
+      <key>gain2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>ant30</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw30</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_delay</key>
+      <key>center_freq30</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>dc_offs_enb30</key>
+      <value>""</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>iq_imbal_enb30</key>
+      <value>""</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>norm_gain30</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>gain30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>ant31</key>
+      <value></value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>bw31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
+      <key>center_freq31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>yunit</key>
+      <key>dc_offs_enb31</key>
       <value>""</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>iq_imbal_enb31</key>
+      <value>""</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>norm_gain31</key>
+      <value>False</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>gain31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant3</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>bw3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
+      <key>center_freq3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>dc_offs_enb3</key>
+      <value>""</value>
     </param>
     <param>
-      <key>entags</key>
-      <value>True</value>
+      <key>iq_imbal_enb3</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>norm_gain3</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(48, 715)</value>
+      <key>gain3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>1,0,1,1</value>
+      <key>ant4</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>180</value>
+      <key>bw4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>center_freq4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1_0_0_0</value>
+      <key>dc_offs_enb4</key>
+      <value>""</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>iq_imbal_enb4</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>norm_gain4</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>gain4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>ant5</key>
       <value></value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>bw5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style1</key>
-      <value>1</value>
+      <key>center_freq5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>dc_offs_enb5</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>iq_imbal_enb5</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>norm_gain5</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label10</key>
+      <key>gain5</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant6</key>
       <value></value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>bw6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>1</value>
+      <key>center_freq6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>dc_offs_enb6</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>iq_imbal_enb6</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>norm_gain6</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>gain6</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant7</key>
       <value></value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>bw7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style2</key>
-      <value>1</value>
+      <key>center_freq7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>dc_offs_enb7</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>iq_imbal_enb7</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>norm_gain7</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>gain7</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant8</key>
       <value></value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>bw8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>center_freq8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>dc_offs_enb8</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>iq_imbal_enb8</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>norm_gain8</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label4</key>
+      <key>gain8</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant9</key>
       <value></value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>bw9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style4</key>
-      <value>1</value>
+      <key>center_freq9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>dc_offs_enb9</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>iq_imbal_enb9</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>norm_gain9</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>gain9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>clock_rate</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>dev_addr</key>
+      <value>addr=192.168.10.2</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>dev_args</key>
+      <value>""</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>_coordinate</key>
+      <value>(48, 171)</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>id</key>
+      <value>uhd_usrp_source_0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>clock_source0</key>
+      <value>gpsdo</value>
     </param>
     <param>
-      <key>label7</key>
+      <key>sd_spec0</key>
       <value></value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>time_source0</key>
+      <value>gpsdo</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>clock_source1</key>
+      <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>sd_spec1</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>time_source1</key>
+      <value></value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>clock_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
+      <key>sd_spec2</key>
       <value></value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>time_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>clock_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>sd_spec3</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>time_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>clock_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>label9</key>
+      <key>sd_spec4</key>
       <value></value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>time_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>1250</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_delay</key>
-      <value>50</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>corr_est</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>ylabel</key>
-      <value>Correlation</value>
-    </param>
-    <param>
-      <key>yunit</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>150</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-150</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
-    <param>
-      <key>autoscale</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(576, 835)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>grid</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1_0_0_1</value>
-    </param>
-    <param>
-      <key>legend</key>
-      <value>False</value>
-    </param>
-    <param>
-      <key>alpha1</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker1</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>style1</key>
-      <value>3</value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha10</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color10</key>
-      <value>"blue"</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker10</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width10</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color2</key>
-      <value>"red"</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker2</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width2</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha3</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color3</key>
-      <value>"green"</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker3</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width3</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha4</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color4</key>
-      <value>"black"</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker4</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width4</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha5</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color5</key>
-      <value>"cyan"</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker5</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width5</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha6</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker6</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width6</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha7</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color7</key>
-      <value>"yellow"</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker7</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width7</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha8</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color8</key>
-      <value>"dark red"</value>
-    </param>
-    <param>
-      <key>label8</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker8</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width8</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>alpha9</key>
-      <value>1.0</value>
-    </param>
-    <param>
-      <key>color9</key>
-      <value>"dark green"</value>
-    </param>
-    <param>
-      <key>label9</key>
-      <value></value>
-    </param>
-    <param>
-      <key>marker9</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>style9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>width9</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>name</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>nconnections</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>size</key>
-      <value>125</value>
-    </param>
-    <param>
-      <key>srate</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>tr_chan</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>tr_delay</key>
-      <value>5</value>
-    </param>
-    <param>
-      <key>tr_level</key>
-      <value>0.0</value>
-    </param>
-    <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
-    </param>
-    <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
-    </param>
-    <param>
-      <key>tr_tag</key>
-      <value>"time_est"</value>
-    </param>
-    <param>
-      <key>type</key>
-      <value>complex</value>
-    </param>
-    <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
-    </param>
-    <param>
-      <key>yunit</key>
-      <value>""</value>
-    </param>
-    <param>
-      <key>ymax</key>
-      <value>2</value>
-    </param>
-    <param>
-      <key>ymin</key>
-      <value>-2</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(16, 379)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>rx_mod_header</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
-    </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(16, 427)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>rx_mod_payload</value>
-    </param>
-    <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
-    </param>
-  </block>
-  <block>
-    <key>qtgui_tab_widget</key>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(24, 971)</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>1,1,1,1</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-    <param>
-      <key>id</key>
-      <value>tab0</value>
-    </param>
-    <param>
-      <key>label0</key>
-      <value>Time</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value>Freq.</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value>Tab 10</value>
-    </param>
-    <param>
-      <key>label11</key>
-      <value>Tab 11</value>
-    </param>
-    <param>
-      <key>label12</key>
-      <value>Tab 12</value>
-    </param>
-    <param>
-      <key>label13</key>
-      <value>Tab 13</value>
-    </param>
-    <param>
-      <key>label14</key>
-      <value>Tab 14</value>
-    </param>
-    <param>
-      <key>label15</key>
-      <value>Tab 15</value>
-    </param>
-    <param>
-      <key>label16</key>
-      <value>Tab 16</value>
-    </param>
-    <param>
-      <key>label17</key>
-      <value>Tab 17</value>
-    </param>
-    <param>
-      <key>label18</key>
-      <value>Tab 18</value>
-    </param>
-    <param>
-      <key>label19</key>
-      <value>Tab 19</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value>Const.</value>
-    </param>
-    <param>
-      <key>label3</key>
-      <value>Tab 3</value>
-    </param>
-    <param>
-      <key>label4</key>
-      <value>Tab 4</value>
-    </param>
-    <param>
-      <key>label5</key>
-      <value>Tab 5</value>
-    </param>
-    <param>
-      <key>label6</key>
-      <value>Tab 6</value>
-    </param>
-    <param>
-      <key>label7</key>
-      <value>Tab 7</value>
+      <key>clock_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
-      <value>Tab 8</value>
+      <key>sd_spec5</key>
+      <value></value>
     </param>
     <param>
-      <key>label9</key>
-      <value>Tab 9</value>
+      <key>time_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>num_tabs</key>
-      <value>3</value>
+      <key>clock_source6</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_tab_widget</key>
     <param>
-      <key>alias</key>
+      <key>sd_spec6</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
+      <key>time_source6</key>
       <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>clock_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(160, 971)</value>
+      <key>sd_spec7</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>1,2,1,1</value>
+      <key>time_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>minoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>id</key>
-      <value>tab1</value>
-    </param>
-    <param>
-      <key>label0</key>
-      <value>Time</value>
-    </param>
-    <param>
-      <key>label1</key>
-      <value>Freq.</value>
-    </param>
-    <param>
-      <key>label10</key>
-      <value>Tab 10</value>
-    </param>
-    <param>
-      <key>label11</key>
-      <value>Tab 11</value>
-    </param>
-    <param>
-      <key>label12</key>
-      <value>Tab 12</value>
-    </param>
-    <param>
-      <key>label13</key>
-      <value>Tab 13</value>
-    </param>
-    <param>
-      <key>label14</key>
-      <value>Tab 14</value>
-    </param>
-    <param>
-      <key>label15</key>
-      <value>Tab 15</value>
-    </param>
-    <param>
-      <key>label16</key>
-      <value>Tab 16</value>
-    </param>
-    <param>
-      <key>label17</key>
-      <value>Tab 17</value>
-    </param>
-    <param>
-      <key>label18</key>
-      <value>Tab 18</value>
-    </param>
-    <param>
-      <key>label19</key>
-      <value>Tab 19</value>
-    </param>
-    <param>
-      <key>label2</key>
-      <value>Const.</value>
+      <key>nchan</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label3</key>
-      <value>Tab 3</value>
+      <key>num_mboards</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label4</key>
-      <value>Tab 4</value>
+      <key>type</key>
+      <value>fc32</value>
     </param>
     <param>
-      <key>label5</key>
-      <value>Tab 5</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>label6</key>
-      <value>Tab 6</value>
+      <key>hide_cmd_port</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label7</key>
-      <value>Tab 7</value>
+      <key>stream_args</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
-      <value>Tab 8</value>
+      <key>stream_chans</key>
+      <value>[]</value>
     </param>
     <param>
-      <key>label9</key>
-      <value>Tab 9</value>
+      <key>sync</key>
+      <value></value>
     </param>
     <param>
-      <key>num_tabs</key>
-      <value>3</value>
+      <key>otw</key>
+      <value></value>
     </param>
   </block>
   <connection>
-    <source_block_id>blocks_message_strobe_0</source_block_id>
-    <sink_block_id>blocks_random_pdu_0</sink_block_id>
-    <source_key>strobe</source_key>
-    <sink_key>generate</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_random_pdu_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
-    <source_key>pdus</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>digital_map_bb_1</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>digital_map_bb_1_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_tagged_stream_multiply_length_0</source_block_id>
-    <sink_block_id>channels_channel_model_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_tagged_stream_mux_0</source_block_id>
-    <sink_block_id>digital_burst_shaper_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>chan_rx_data</source_block_id>
-    <sink_block_id>digital_corr_est_cc_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>chan_data</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
     <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_burst_shaper_xx_0</source_block_id>
-    <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0</source_block_id>
-    <sink_block_id>mod_header</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0_0</source_block_id>
-    <sink_block_id>mod_payload</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_corr_est_cc_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1_0_0_0</sink_block_id>
-    <source_key>1</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_corr_est_cc_0</source_block_id>
-    <sink_block_id>digital_pfb_clock_sync_xxx_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_1</source_block_id>
+    <sink_block_id>packet_rx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_crc32_async_bb_1</source_block_id>
-    <sink_block_id>digital_packet_format_async_1</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_map_bb_1</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
+    <source_block_id>digital_fll_band_edge_cc_0</source_block_id>
+    <sink_block_id>blocks_multiply_const_vxx_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_map_bb_1_0</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0_0</sink_block_id>
-    <source_key>0</source_key>
+    <source_block_id>packet_rx_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_1_0_0_1</sink_block_id>
+    <source_key>2</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
-    <source_key>header</source_key>
-    <sink_key>pdus</sink_key>
+    <source_block_id>packet_rx_0</source_block_id>
+    <sink_block_id>blocks_message_debug_0</sink_block_id>
+    <source_key>pkt out</source_key>
+    <sink_key>print_pdu</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
-    <source_key>payload</source_key>
+    <source_block_id>packet_rx_0</source_block_id>
+    <sink_block_id>blocks_tuntap_pdu_0</sink_block_id>
+    <source_key>pkt out</source_key>
     <sink_key>pdus</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
-    <sink_block_id>blocks_tag_debug_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
-    <sink_block_id>digital_probe_mpsk_snr_est_c_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
+    <source_block_id>packet_rx_0</source_block_id>
     <sink_block_id>qtgui_const_sink_x_0_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0_0</sink_block_id>
-    <source_key>0</source_key>
+    <source_key>1</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_pfb_clock_sync_xxx_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1_0_0_1</sink_block_id>
+    <source_block_id>uhd_usrp_source_0</source_block_id>
+    <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_probe_mpsk_snr_est_c_0</source_block_id>
-    <sink_block_id>blocks_message_debug_0</sink_block_id>
-    <source_key>snr</source_key>
-    <sink_key>print</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>blocks_tagged_stream_multiply_length_0</sink_block_id>
+    <source_block_id>uhd_usrp_source_0</source_block_id>
+    <sink_block_id>blocks_multiply_const_vxx_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>rx_mod_header</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
+    <source_block_id>uhd_usrp_source_0</source_block_id>
+    <sink_block_id>digital_fll_band_edge_cc_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
-  <connection>
-    <source_block_id>rx_mod_payload</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>1</sink_key>
-  </connection>
 </flow_graph>
diff --git a/gr-digital/examples/packet/transmitter_sim.grc 
b/gr-digital/examples/packet/uhd_packet_tx.grc
similarity index 76%
copy from gr-digital/examples/packet/transmitter_sim.grc
copy to gr-digital/examples/packet/uhd_packet_tx.grc
index 8917396..825d4bb 100644
--- a/gr-digital/examples/packet/transmitter_sim.grc
+++ b/gr-digital/examples/packet/uhd_packet_tx.grc
@@ -1,23 +1,23 @@
-<?xml version='1.0' encoding='ASCII'?>
-<?grc format='1' created='3.7.8'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.10'?>
 <flow_graph>
   <timestamp>Thu Dec  4 14:34:25 2014</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>parse_packet_header_soft</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>window_size</key>
+      <value>2000,2000</value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
+      <key>category</key>
+      <value>Custom</value>
     </param>
     <param>
-      <key>author</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -25,964 +25,1032 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>2000,2000</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_coordinate</key>
+      <value>(8, 11)</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>uhd_packet_tx</value>
     </param>
     <param>
       <key>max_nouts</key>
       <value>0</value>
     </param>
     <param>
-      <key>realtime_scheduling</key>
+      <key>qt_qss_theme</key>
       <value></value>
     </param>
     <param>
-      <key>thread_safe_setters</key>
+      <key>realtime_scheduling</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(8, 11)</value>
+      <key>run</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>thread_safe_setters</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>rate</value>
+      <key>title</key>
+      <value></value>
     </param>
+  </block>
+  <block>
+    <key>variable_constellation</key>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>2</value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>dims</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1312, 819)</value>
+      <value>(240, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>k</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>7</value>
+      <value>Const_HDR</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1240, 819)</value>
+      <key>precision</key>
+      <value>8</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
   </block>
   <block>
-    <key>variable</key>
-    <param>
-      <key>id</key>
-      <value>rep</value>
-    </param>
+    <key>variable_constellation</key>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>3</value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>dims</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1216, 883)</value>
+      <value>(400, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>polys</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>[109, 79]</value>
+      <value>Const_PLD</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1288, 883)</value>
+      <key>precision</key>
+      <value>8</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
   </block>
   <block>
-    <key>variable</key>
-    <param>
-      <key>id</key>
-      <value>eb</value>
-    </param>
+    <key>variable_constellation</key>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>0.22</value>
+      <key>const_points</key>
+      <value>digital.psk_4()[0]</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>dims</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>False</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1216, 67)</value>
+      <value>(560, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>nfilts</value>
+      <value>Const_PLD</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>rot_sym</key>
+      <value>4</value>
     </param>
     <param>
-      <key>value</key>
-      <value>32</value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>precision</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>sym_map</key>
+      <value>digital.psk_4()[1]</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>value</key>
+      <value>0.5</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1144, 67)</value>
+      <value>(576, 683)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>sps</value>
+      <value>amp</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>2</value>
+      <key>label</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1072, 67)</value>
+      <key>start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>step</key>
+      <value>0.005</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
     <param>
-      <key>id</key>
-      <value>rx_mod_header</value>
+      <key>stop</key>
+      <value>0.9</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(16, 379)</value>
+      <value>(152, 75)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
     <param>
       <key>id</key>
-      <value>rx_mod_payload</value>
+      <value>eb</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>0.22</value>
     </param>
+  </block>
+  <block>
+    <key>variable_cc_encoder_def</key>
     <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <key>padding</key>
+      <value>False</value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(16, 427)</value>
+      <key>k</key>
+      <value>k</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_mux</key>
     <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_mux_0</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>framebits</key>
+      <value>1500*8</value>
     </param>
     <param>
-      <key>ninputs</key>
-      <value>2</value>
+      <key>_coordinate</key>
+      <value>(216, 467)</value>
     </param>
     <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>id</key>
+      <value>enc</value>
     </param>
     <param>
-      <key>tag_preserve_head_pos</key>
+      <key>ndim</key>
       <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>polys</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>rate</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>state_start</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>mode</key>
+      <value>fec.CC_TERMINATED</value>
     </param>
+  </block>
+  <block>
+    <key>variable_dummy_encoder_def</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(216, 400)</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>dim2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_message_strobe</key>
     <param>
-      <key>id</key>
-      <value>blocks_message_strobe_0</value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>_coordinate</key>
+      <value>(16, 467)</value>
     </param>
     <param>
-      <key>msg</key>
-      <value>pmt.intern("TEST")</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>period</key>
-      <value>100</value>
+      <key>id</key>
+      <value>enc</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_repetition_encoder_def</key>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>dim2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(24, 83)</value>
+      <value>(16, 547)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>fec_async_encoder</key>
     <param>
       <key>id</key>
-      <value>fec_async_encoder_0</value>
+      <value>enc</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>encoder</key>
-      <value>enc</value>
+      <key>rep</key>
+      <value>rep</value>
     </param>
+  </block>
+  <block>
+    <key>variable_dummy_encoder_def</key>
     <param>
-      <key>packed</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>rev_unpack</key>
-      <value>False</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>rev_pack</key>
-      <value>False</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_coordinate</key>
+      <value>(440, 467)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>id</key>
+      <value>enc_hdr</value>
+    </param>
+    <param>
+      <key>ndim</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_packet_formatter_default</key>
+    <param>
+      <key>access_code</key>
+      <value>digital.packet_utils.default_access_code</value>
+    </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(80, 171)</value>
+      <value>(728, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_crc32_async_bb</key>
     <param>
       <key>id</key>
-      <value>digital_crc32_async_bb_1</value>
+      <value>formatter</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>check</key>
+      <key>_enabled</key>
       <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(728, 75)</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>id</key>
+      <value>formatter</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>value</key>
+      
<value>digital.packet_formatter_counter(digital.packet_utils.default_access_code,
 Const_PLD.bits_per_symbol())</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>value</key>
+      <value>483e6-300</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(424, 91)</value>
+      <value>(576, 555)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>0,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_random_pdu</key>
     <param>
       <key>id</key>
-      <value>blocks_random_pdu_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>freq</value>
     </param>
     <param>
-      <key>minsize</key>
-      <value>50</value>
+      <key>label</key>
+      <value>Frequency</value>
     </param>
     <param>
-      <key>maxsize</key>
-      <value>100</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>mask</key>
-      <value>0xFF</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>length_modulo</key>
-      <value>2</value>
+      <key>start</key>
+      <value>50e6</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>step</key>
+      <value>500e3</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>stop</key>
+      <value>3e9</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>value</key>
+      <value>50</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(208, 67)</value>
+      <value>(448, 683)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1,0,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_cc_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
+      <value>gain</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>label</key>
+      <value>Gain</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
+    </param>
+    <param>
+      <key>start</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
+      <key>step</key>
       <value>1</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>4</value>
+      <key>stop</key>
+      <value>83</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>state_start</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(272, 651)</value>
     </param>
     <param>
-      <key>state_end</key>
-      <value>-1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>id</key>
+      <value>k</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>value</key>
+      <value>7</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1384, 779)</value>
+      <value>(80, 75)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <value>nfilts</value>
     </param>
     <param>
       <key>value</key>
-      <value>"ok"</value>
+      <value>32</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(1272, 11)</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>id</key>
+      <value>ntaps</value>
     </param>
     <param>
-      <key>prob</key>
-      <value>0.5</value>
+      <key>value</key>
+      <value>len(tx_rrc_taps)</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1184, 699)</value>
+      <value>(320, 715)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>polys</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>[109, 79]</value>
+    </param>
   </block>
   <block>
-    <key>variable_cc_encoder_def</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>enc</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
+      <value>True</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(344, 651)</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>id</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>value</key>
+      <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>_coordinate</key>
+      <value>(248, 715)</value>
     </param>
     <param>
-      <key>state_start</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>id</key>
+      <value>rep</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>value</key>
+      <value>3</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>value</key>
+      <value>1000e3</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1384, 603)</value>
+      <value>(448, 555)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>0,0,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_dummy_encoder_def</key>
     <param>
       <key>id</key>
-      <value>enc</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>label</key>
+      <value>Sample Rate</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>start</key>
+      <value>200e3</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>step</key>
+      <value>200e3</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>stop</key>
+      <value>10e6</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(992, 603)</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>variable_dummy_decoder_def</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>dec</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>_coordinate</key>
+      <value>(8, 75)</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>id</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>value</key>
+      <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha</key>
+      <value>eb</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(992, 683)</value>
+      <value>(944, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc</value>
+      <key>gain</key>
+      <value>nfilts</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>id</key>
+      <value>tx_rrc_taps</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>ntaps</key>
+      <value>5*sps*nfilts</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>samp_rate</key>
+      <value>nfilts</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>sym_rate</key>
+      <value>1.0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_message_debug</key>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1184, 603)</value>
+      <value>(936, 297)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>blocks_message_debug_0</value>
+    </param>
   </block>
   <block>
-    <key>variable_qtgui_range</key>
+    <key>blocks_message_strobe</key>
     <param>
-      <key>id</key>
-      <value>noise</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>Noise Amp</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>start</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(32, 203)</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>0.5</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>id</key>
+      <value>blocks_message_strobe_0</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>msg</key>
+      <value>pmt.intern("TEST")</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,0,1,1</value>
+      <key>period</key>
+      <value>2000</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_multiply_const_vxx</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -992,2307 +1060,2206 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(40, 627)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>const</key>
+      <value>amp</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>freq_offset</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Freq. Offset</value>
+      <key>_coordinate</key>
+      <value>(952, 211)</value>
     </param>
     <param>
-      <key>value</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>-1</value>
+      <key>id</key>
+      <value>blocks_multiply_const_vxx_0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>1</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_random_pdu</key>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,1,1,1</value>
+      <key>mask</key>
+      <value>0xff</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(152, 627)</value>
+      <value>(240, 187)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
       <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0_0</value>
+      <value>blocks_random_pdu_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>length_modulo</key>
+      <value>1</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>maxsize</key>
+      <value>150</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minsize</key>
+      <value>15</value>
     </param>
     <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+  </block>
+  <block>
+    <key>blocks_tag_debug</key>
+    <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>display</key>
+      <value>True</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>0</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(336, 211)</value>
+      <value>(1472, 275)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
       <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <value>blocks_tag_debug_0</value>
     </param>
     <param>
       <key>type</key>
-      <value>byte</value>
+      <value>complex</value>
     </param>
     <param>
-      <key>tag</key>
+      <key>filter</key>
       <value>packet_len</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>name</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>num_inputs</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>packet_tx</key>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(336, 283)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
-    <param>
-      <key>id</key>
-      <value>digital_map_bb_1_0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_PLD.pre_diff_code()</value>
-    </param>
-    <param>
-      <key>alias</key>
-      <value></value>
-    </param>
-    <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(496, 163)</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>hdr_enc</key>
+      <value>enc_hdr</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>hdr_const</key>
+      <value>Const_HDR</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 283)</value>
+      <key>id</key>
+      <value>packet_tx_0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>maxoutbuf</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>formatter</key>
+      <value>formatter</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>pld_enc</key>
+      <value>enc</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_PLD.bits_per_symbol()</value>
+      <key>pld_const</key>
+      <value>Const_PLD</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>psf_taps</key>
+      <value>tx_rrc_taps</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>sps</key>
+      <value>sps</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_const_sink_x</key>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(1264, 475)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(560, 275)</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
+    <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
     <param>
       <key>id</key>
-      <value>digital_map_bb_1</value>
+      <value>qtgui_const_sink_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_HDR.pre_diff_code()</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker1</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style1</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 211)</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
-    </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
-    <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
+      <key>color10</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>marker10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_HDR.bits_per_symbol()</value>
+      <key>style10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>marker2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>style2</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(560, 203)</value>
+      <key>color3</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>label3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>marker3</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_packet_format_async</key>
     <param>
-      <key>id</key>
-      <value>digital_packet_format_async_1</value>
+      <key>style3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>formatter</key>
-      <value>formatter</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color4</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label4</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker4</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style4</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(80, 232)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0_0</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>color5</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>marker5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_PLD.points()</value>
+      <key>style5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dimension</key>
+      <key>width5</key>
       <value>1</value>
     </param>
     <param>
-      <key>num_ports</key>
-      <value>1</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color6</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker6</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style6</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>width6</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 275)</value>
+      <key>marker7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style7</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>id</key>
-      <value>mod_header</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>color8</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1120, 211)</value>
+      <key>marker8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style8</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>color9</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_HDR.points()</value>
+      <key>marker9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dimension</key>
-      <value>1</value>
+      <key>style9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>num_ports</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>size</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 203)</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>id</key>
-      <value>mod_payload</value>
+      <key>tr_tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>xmax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1120, 283)</value>
+      <key>xmin</key>
+      <value>-2</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>ymax</key>
+      <value>2</value>
+    </param>
+    <param>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
   </block>
   <block>
-    <key>variable_packet_formatter_default</key>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>formatter</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>access_code</key>
-      <value>0</value>
+      <key>bw</key>
+      <value>1</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
+      <key>fc</key>
+      <value>0</value>
+    </param>
+    <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1072, 3)</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
-      <key>id</key>
-      <value>Const_PLD</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_4()[1]</value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_4()[0]</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>4</value>
+      <key>_coordinate</key>
+      <value>(1264, 395)</value>
     </param>
     <param>
-      <key>dims</key>
-      <value>1</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>id</key>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 3)</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
-      <key>id</key>
-      <value>Const_PLD</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>rot_sym</key>
-      <value>2</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>dims</key>
+      <key>width10</key>
       <value>1</value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(736, 3)</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
-      <key>id</key>
-      <value>Const_HDR</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>rot_sym</key>
-      <value>2</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>dims</key>
+      <key>width4</key>
       <value>1</value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(576, 3)</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
-  </block>
-  <block>
-    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>id</key>
-      <value>tx_rrc_taps</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gain</key>
-      <value>nfilts</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>nfilts</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>sym_rate</key>
-      <value>1.0</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha</key>
-      <value>eb</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ntaps</key>
-      <value>5*sps*nfilts</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1304, 3)</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>time_offset</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>Time Offset</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>value</key>
-      <value>1.0</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>0.99</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>1.01</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.0001</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>showports</key>
+      <value>True</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>freqhalf</key>
+      <value>True</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>1,0,1,1</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(264, 627)</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_tab_widget</key>
     <param>
-      <key>id</key>
-      <value>tab0</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label</key>
+      <value>Relative Gain</value>
     </param>
     <param>
-      <key>num_tabs</key>
-      <value>2</value>
+      <key>ymax</key>
+      <value>10</value>
     </param>
     <param>
-      <key>label0</key>
-      <value>Freq.</value>
+      <key>ymin</key>
+      <value>-140</value>
     </param>
     <param>
-      <key>label1</key>
-      <value>Const.</value>
+      <key>units</key>
+      <value>dB</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>label2</key>
-      <value>Tab 2</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label3</key>
-      <value>Tab 3</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>label4</key>
-      <value>Tab 4</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label5</key>
-      <value>Tab 5</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label6</key>
-      <value>Tab 6</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>label7</key>
-      <value>Tab 7</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
-      <key>label8</key>
-      <value>Tab 8</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label9</key>
-      <value>Tab 9</value>
+      <key>_coordinate</key>
+      <value>(1264, 315)</value>
     </param>
     <param>
-      <key>label10</key>
-      <value>Tab 10</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
-      <key>label11</key>
-      <value>Tab 11</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label12</key>
-      <value>Tab 12</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label13</key>
-      <value>Tab 13</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_1</value>
     </param>
     <param>
-      <key>label14</key>
-      <value>Tab 14</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label15</key>
-      <value>Tab 15</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>label16</key>
-      <value>Tab 16</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>label17</key>
-      <value>Tab 17</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>label18</key>
-      <value>Tab 18</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>label19</key>
-      <value>Tab 19</value>
+      <key>style1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>2,1,1,1</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(40, 755)</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>yunit</key>
-      <value>""</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>size</key>
-      <value>2500</value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>srate</key>
+      <key>width2</key>
       <value>1</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>nconnections</key>
+      <key>style3</key>
       <value>1</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
-    </param>
-    <param>
-      <key>entags</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>gui_hint</key>
-      <value>2,0,1,1</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style1</key>
+      <key>width5</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style2</key>
+      <key>width6</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>style7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style3</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>label4</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>style8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style4</key>
+      <key>width8</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>label5</key>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style5</key>
+      <key>width9</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>size</key>
+      <value>2500</value>
     </param>
     <param>
-      <key>width6</key>
+      <key>srate</key>
       <value>1</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
-    </param>
-    <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>tr_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>tr_tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_tab_widget</key>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(1096, 11)</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>gui_hint</key>
+      <value>2,0,1,2</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>id</key>
+      <value>tab0</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>label0</key>
+      <value>Time</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>label1</key>
+      <value>Freq.</value>
     </param>
     <param>
       <key>label10</key>
-      <value></value>
+      <value>Tab 10</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>label11</key>
+      <value>Tab 11</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>label12</key>
+      <value>Tab 12</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>1</value>
+      <key>label13</key>
+      <value>Tab 13</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>label14</key>
+      <value>Tab 14</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>label15</key>
+      <value>Tab 15</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>label16</key>
+      <value>Tab 16</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>label17</key>
+      <value>Tab 17</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>label18</key>
+      <value>Tab 18</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 339)</value>
+      <key>label19</key>
+      <value>Tab 19</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>label2</key>
+      <value>Const.</value>
     </param>
-  </block>
-  <block>
-    <key>digital_burst_shaper_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_burst_shaper_xx_0</value>
+      <key>label3</key>
+      <value>Tab 3</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>label4</key>
+      <value>Tab 4</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>label5</key>
+      <value>Tab 5</value>
     </param>
     <param>
-      <key>window</key>
-      <value>firdes.window(firdes.WIN_HANN, 20, 0)</value>
+      <key>label6</key>
+      <value>Tab 6</value>
     </param>
     <param>
-      <key>pre_padding</key>
-      <value>20</value>
+      <key>label7</key>
+      <value>Tab 7</value>
     </param>
     <param>
-      <key>post_padding</key>
-      <value>20</value>
+      <key>label8</key>
+      <value>Tab 8</value>
     </param>
     <param>
-      <key>insert_phasing</key>
-      <value>True</value>
+      <key>label9</key>
+      <value>Tab 9</value>
     </param>
     <param>
-      <key>length_tag_name</key>
-      <value>"packet_len"</value>
+      <key>num_tabs</key>
+      <value>3</value>
     </param>
+  </block>
+  <block>
+    <key>uhd_usrp_sink</key>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>ant0</key>
+      <value>TX/RX</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw0</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>center_freq0</key>
+      <value>uhd.tune_request(freq, samp_rate/2.0)</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>norm_gain0</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(448, 379)</value>
+      <key>gain0</key>
+      <value>gain</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>ant10</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw10</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
     <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
+      <key>center_freq10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>norm_gain10</key>
+      <value>False</value>
     </param>
     <param>
-      <key>type</key>
-      <value>ccf</value>
+      <key>gain10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rrate</key>
-      <value>sps</value>
+      <key>ant11</key>
+      <value></value>
     </param>
     <param>
-      <key>taps</key>
-      <value>tx_rrc_taps</value>
+      <key>bw11</key>
+      <value>0</value>
     </param>
     <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
+      <key>center_freq11</key>
+      <value>0</value>
     </param>
     <param>
-      <key>atten</key>
-      <value>100</value>
+      <key>norm_gain11</key>
+      <value>False</value>
     </param>
     <param>
-      <key>samp_delay</key>
+      <key>gain11</key>
       <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant12</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw12</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>center_freq12</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>norm_gain12</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain12</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>ant13</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(680, 387)</value>
+      <key>bw13</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>center_freq13</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>channels_channel_model</key>
     <param>
-      <key>id</key>
-      <value>channels_channel_model_0</value>
+      <key>norm_gain13</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>gain13</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant14</key>
+      <value></value>
     </param>
     <param>
-      <key>noise_voltage</key>
-      <value>noise</value>
+      <key>bw14</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>center_freq14</key>
+      <value>0</value>
     </param>
     <param>
-      <key>freq_offset</key>
-      <value>freq_offset</value>
+      <key>norm_gain14</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain14</key>
+      <value>0</value>
     </param>
     <param>
-      <key>epsilon</key>
-      <value>time_offset</value>
+      <key>ant15</key>
+      <value></value>
     </param>
     <param>
-      <key>taps</key>
-      <value>1.0</value>
+      <key>bw15</key>
+      <value>0</value>
     </param>
     <param>
-      <key>seed</key>
+      <key>center_freq15</key>
       <value>0</value>
     </param>
     <param>
-      <key>block_tags</key>
+      <key>norm_gain15</key>
       <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain15</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant16</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw16</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq16</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(936, 379)</value>
+      <key>norm_gain16</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain16</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+      <key>ant17</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw17</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>center_freq17</key>
+      <value>0</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>norm_gain17</key>
+      <value>False</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>gain17</key>
+      <value>0</value>
     </param>
     <param>
-      <key>freqhalf</key>
-      <value>True</value>
+      <key>ant18</key>
+      <value></value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>bw18</key>
+      <value>0</value>
     </param>
     <param>
-      <key>fc</key>
+      <key>center_freq18</key>
       <value>0</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>1</value>
+      <key>norm_gain18</key>
+      <value>False</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>gain18</key>
+      <value>0</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>ant19</key>
+      <value></value>
     </param>
     <param>
-      <key>average</key>
-      <value>1.0</value>
+      <key>bw19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>center_freq19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>norm_gain19</key>
+      <value>False</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>gain19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>ant1</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>bw1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>showports</key>
-      <value>True</value>
+      <key>center_freq1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>norm_gain1</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>gain1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>ant20</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw20</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>center_freq20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ctrlpanel</key>
+      <key>norm_gain20</key>
       <value>False</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>gain20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>ant21</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>bw21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>center_freq21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>norm_gain21</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>gain21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>ant22</key>
+      <value></value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>bw22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>center_freq22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>norm_gain22</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>gain22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>ant23</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>bw23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>center_freq23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>norm_gain23</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>gain23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>ant24</key>
+      <value></value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>bw24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>center_freq24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>norm_gain24</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>gain24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label6</key>
+      <key>ant25</key>
       <value></value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>bw25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>center_freq25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>norm_gain25</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>gain25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>ant26</key>
+      <value></value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>bw26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>center_freq26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>norm_gain26</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>gain26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>ant27</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>bw27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>center_freq27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>norm_gain27</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>gain27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>ant28</key>
+      <value></value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>bw28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>center_freq28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>norm_gain28</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>gain28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant29</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>center_freq29</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>norm_gain29</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain29</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>ant2</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 419)</value>
+      <key>bw2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>center_freq2</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0</value>
+      <key>norm_gain2</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>gain2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>ant30</key>
+      <value></value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>bw30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>size</key>
-      <value>1024</value>
+      <key>center_freq30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>grid</key>
+      <key>norm_gain30</key>
       <value>False</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>gain30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>ant31</key>
+      <value></value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>bw31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>xmin</key>
-      <value>-2</value>
+      <key>center_freq31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>xmax</key>
-      <value>2</value>
+      <key>norm_gain31</key>
+      <value>False</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>gain31</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>ant3</key>
+      <value></value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>bw3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>center_freq3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>norm_gain3</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>gain3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>ant4</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>bw4</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>center_freq4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>legend</key>
+      <key>norm_gain4</key>
       <value>False</value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
+      <key>gain4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>ant5</key>
+      <value></value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>bw5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style1</key>
+      <key>center_freq5</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>0</value>
+      <key>norm_gain5</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>gain5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label2</key>
+      <key>ant6</key>
       <value></value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>bw6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>center_freq6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style2</key>
+      <key>norm_gain6</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain6</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker2</key>
+      <key>ant7</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw7</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>center_freq7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>norm_gain7</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>gain7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"red"</value>
+      <key>ant8</key>
+      <value></value>
     </param>
     <param>
-      <key>style3</key>
+      <key>bw8</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker3</key>
+      <key>center_freq8</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>norm_gain8</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>gain8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>ant9</key>
+      <value></value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"red"</value>
+      <key>bw9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style4</key>
+      <key>center_freq9</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker4</key>
+      <key>norm_gain9</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain9</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>clock_rate</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>label5</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"red"</value>
+      <key>dev_addr</key>
+      <value>""</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>0</value>
+      <key>dev_args</key>
+      <value>""</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>_coordinate</key>
+      <value>(1264, 99)</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>id</key>
+      <value>uhd_usrp_sink_0</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"red"</value>
+      <key>type</key>
+      <value>fc32</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>0</value>
+      <key>clock_source0</key>
+      <value>gpsdo</value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>0</value>
+      <key>sd_spec0</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>time_source0</key>
+      <value>gpsdo</value>
     </param>
     <param>
-      <key>label7</key>
+      <key>clock_source1</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>sd_spec1</key>
+      <value></value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"red"</value>
+      <key>time_source1</key>
+      <value></value>
     </param>
     <param>
-      <key>style7</key>
-      <value>0</value>
+      <key>clock_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>0</value>
+      <key>sd_spec2</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>time_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
+      <key>clock_source3</key>
       <value></value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>sd_spec3</key>
+      <value></value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"red"</value>
+      <key>time_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>style8</key>
-      <value>0</value>
+      <key>clock_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>0</value>
+      <key>sd_spec4</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>time_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>label9</key>
+      <key>clock_source5</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>sd_spec5</key>
+      <value></value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"red"</value>
+      <key>time_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>style9</key>
-      <value>0</value>
+      <key>clock_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>0</value>
+      <key>sd_spec6</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>time_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>label10</key>
+      <key>clock_source7</key>
       <value></value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>sd_spec7</key>
+      <value></value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"red"</value>
+      <key>time_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>style10</key>
-      <value>0</value>
+      <key>nchan</key>
+      <value>1</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>0</value>
+      <key>num_mboards</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>hide_cmd_port</key>
+      <value>False</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>stream_args</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
+      <key>stream_chans</key>
+      <value>[]</value>
+    </param>
+    <param>
+      <key>sync</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 499)</value>
+      <key>len_tag_name</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>otw</key>
+      <value></value>
     </param>
   </block>
   <connection>
-    <source_block_id>rx_mod_header</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>rx_mod_payload</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>1</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_crc32_async_bb_1</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>fec_async_encoder_0</source_block_id>
-    <sink_block_id>digital_packet_format_async_1</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
-    <source_key>header</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
-    <source_key>payload</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>channels_channel_model_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_tagged_stream_mux_0</source_block_id>
-    <sink_block_id>digital_burst_shaper_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_burst_shaper_xx_0</source_block_id>
-    <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_random_pdu_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
-    <source_key>pdus</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
     <source_block_id>blocks_message_strobe_0</source_block_id>
     <sink_block_id>blocks_random_pdu_0</sink_block_id>
     <source_key>strobe</source_key>
     <sink_key>generate</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_map_bb_1_0</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>blocks_tag_debug_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>digital_map_bb_1_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>digital_map_bb_1</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>uhd_usrp_sink_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_map_bb_1</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <source_block_id>blocks_random_pdu_0</source_block_id>
+    <sink_block_id>packet_tx_0</sink_block_id>
+    <source_key>pdus</source_key>
+    <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0</source_block_id>
-    <sink_block_id>mod_header</sink_block_id>
+    <source_block_id>packet_tx_0</source_block_id>
+    <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0_0</source_block_id>
-    <sink_block_id>mod_payload</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <source_block_id>packet_tx_0</source_block_id>
+    <sink_block_id>blocks_message_debug_0</sink_block_id>
+    <source_key>postcrc</source_key>
+    <sink_key>print_pdu</sink_key>
   </connection>
 </flow_graph>
diff --git a/gr-digital/examples/packet/transmitter_sim.grc 
b/gr-digital/examples/packet/uhd_packet_tx_tun.grc
similarity index 75%
rename from gr-digital/examples/packet/transmitter_sim.grc
rename to gr-digital/examples/packet/uhd_packet_tx_tun.grc
index 8917396..c168286 100644
--- a/gr-digital/examples/packet/transmitter_sim.grc
+++ b/gr-digital/examples/packet/uhd_packet_tx_tun.grc
@@ -1,23 +1,23 @@
-<?xml version='1.0' encoding='ASCII'?>
-<?grc format='1' created='3.7.8'?>
+<?xml version='1.0' encoding='utf-8'?>
+<?grc format='1' created='3.7.10'?>
 <flow_graph>
   <timestamp>Thu Dec  4 14:34:25 2014</timestamp>
   <block>
     <key>options</key>
     <param>
-      <key>id</key>
-      <value>parse_packet_header_soft</value>
+      <key>author</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>window_size</key>
+      <value>2000,2000</value>
     </param>
     <param>
-      <key>title</key>
-      <value></value>
+      <key>category</key>
+      <value>Custom</value>
     </param>
     <param>
-      <key>author</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
@@ -25,964 +25,1040 @@
       <value></value>
     </param>
     <param>
-      <key>window_size</key>
-      <value>2000,2000</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>generate_options</key>
-      <value>qt_gui</value>
+      <key>_coordinate</key>
+      <value>(8, 11)</value>
     </param>
     <param>
-      <key>category</key>
-      <value>Custom</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>run_options</key>
-      <value>prompt</value>
+      <key>generate_options</key>
+      <value>qt_gui</value>
     </param>
     <param>
-      <key>run</key>
-      <value>True</value>
+      <key>hier_block_src_path</key>
+      <value>.:</value>
+    </param>
+    <param>
+      <key>id</key>
+      <value>uhd_packet_tx_tun</value>
     </param>
     <param>
       <key>max_nouts</key>
       <value>0</value>
     </param>
     <param>
-      <key>realtime_scheduling</key>
+      <key>qt_qss_theme</key>
       <value></value>
     </param>
     <param>
-      <key>thread_safe_setters</key>
+      <key>realtime_scheduling</key>
       <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>run_command</key>
+      <value>{python} -u {filename}</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>run_options</key>
+      <value>prompt</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(8, 11)</value>
+      <key>run</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>thread_safe_setters</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>rate</value>
+      <key>title</key>
+      <value></value>
     </param>
+  </block>
+  <block>
+    <key>variable_constellation</key>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>2</value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>dims</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1312, 819)</value>
+      <value>(240, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>k</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>7</value>
+      <value>Const_HDR</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1240, 819)</value>
+      <key>precision</key>
+      <value>8</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
   </block>
   <block>
-    <key>variable</key>
-    <param>
-      <key>id</key>
-      <value>rep</value>
-    </param>
+    <key>variable_constellation</key>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>3</value>
+      <key>const_points</key>
+      <value>digital.psk_2()[0]</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>dims</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1216, 883)</value>
+      <value>(400, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>polys</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>[109, 79]</value>
+      <value>Const_PLD</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>rot_sym</key>
+      <value>2</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1288, 883)</value>
+      <key>precision</key>
+      <value>8</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>sym_map</key>
+      <value>digital.psk_2()[1]</value>
     </param>
   </block>
   <block>
-    <key>variable</key>
-    <param>
-      <key>id</key>
-      <value>eb</value>
-    </param>
+    <key>variable_constellation</key>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>0.22</value>
+      <key>const_points</key>
+      <value>digital.psk_4()[0]</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>dims</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>False</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1216, 67)</value>
+      <value>(560, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>nfilts</value>
+      <value>Const_PLD</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>rot_sym</key>
+      <value>4</value>
     </param>
     <param>
-      <key>value</key>
-      <value>32</value>
+      <key>soft_dec_lut</key>
+      <value>'auto'</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>precision</key>
+      <value>8</value>
+    </param>
+    <param>
+      <key>sym_map</key>
+      <value>digital.psk_4()[1]</value>
     </param>
+  </block>
+  <block>
+    <key>variable_qtgui_range</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>value</key>
+      <value>0.5</value>
+    </param>
+    <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1144, 67)</value>
+      <value>(576, 683)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>1,1,1,1</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable</key>
     <param>
       <key>id</key>
-      <value>sps</value>
+      <value>amp</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>value</key>
-      <value>2</value>
+      <key>label</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1072, 67)</value>
+      <key>start</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>step</key>
+      <value>0.005</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
     <param>
-      <key>id</key>
-      <value>rx_mod_header</value>
+      <key>stop</key>
+      <value>0.9</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(16, 379)</value>
+      <value>(152, 75)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_source</key>
     <param>
       <key>id</key>
-      <value>rx_mod_payload</value>
+      <value>eb</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>value</key>
+      <value>0.22</value>
     </param>
+  </block>
+  <block>
+    <key>variable_cc_encoder_def</key>
     <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <key>padding</key>
+      <value>False</value>
     </param>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(16, 427)</value>
+      <key>k</key>
+      <value>k</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_tagged_stream_mux</key>
     <param>
-      <key>id</key>
-      <value>blocks_tagged_stream_mux_0</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>framebits</key>
+      <value>1500*8</value>
     </param>
     <param>
-      <key>ninputs</key>
-      <value>2</value>
+      <key>_coordinate</key>
+      <value>(216, 467)</value>
     </param>
     <param>
-      <key>lengthtagname</key>
-      <value>packet_len</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>vlen</key>
-      <value>1</value>
+      <key>id</key>
+      <value>enc</value>
     </param>
     <param>
-      <key>tag_preserve_head_pos</key>
+      <key>ndim</key>
       <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>polys</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>rate</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>state_start</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>mode</key>
+      <value>fec.CC_TERMINATED</value>
     </param>
+  </block>
+  <block>
+    <key>variable_dummy_encoder_def</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(216, 400)</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>dim2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_message_strobe</key>
     <param>
-      <key>id</key>
-      <value>blocks_message_strobe_0</value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>_coordinate</key>
+      <value>(16, 467)</value>
     </param>
     <param>
-      <key>msg</key>
-      <value>pmt.intern("TEST")</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>period</key>
-      <value>100</value>
+      <key>id</key>
+      <value>enc</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_repetition_encoder_def</key>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>dim2</key>
+      <value>1</value>
+    </param>
+    <param>
+      <key>_enabled</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(24, 83)</value>
+      <value>(16, 547)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>fec_async_encoder</key>
     <param>
       <key>id</key>
-      <value>fec_async_encoder_0</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>encoder</key>
       <value>enc</value>
     </param>
     <param>
-      <key>packed</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>rev_unpack</key>
-      <value>False</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rev_pack</key>
-      <value>False</value>
+      <key>rep</key>
+      <value>rep</value>
     </param>
+  </block>
+  <block>
+    <key>variable_dummy_encoder_def</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>dim1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>dim2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>framebits</key>
+      <value>8000</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(80, 171)</value>
+      <value>(440, 467)</value>
     </param>
     <param>
       <key>_rotation</key>
-      <value>180</value>
+      <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_crc32_async_bb</key>
     <param>
       <key>id</key>
-      <value>digital_crc32_async_bb_1</value>
+      <value>enc_hdr</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>ndim</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable_packet_formatter_default</key>
     <param>
-      <key>check</key>
-      <value>False</value>
+      <key>access_code</key>
+      <value>digital.packet_utils.default_access_code</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>_coordinate</key>
+      <value>(728, 11)</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>id</key>
+      <value>formatter</value>
+    </param>
+    <param>
+      <key>threshold</key>
       <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>False</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(424, 91)</value>
+      <value>(728, 75)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>formatter</value>
+    </param>
+    <param>
+      <key>value</key>
+      
<value>digital.packet_formatter_counter(digital.packet_utils.default_access_code,
 Const_PLD.bits_per_symbol())</value>
+    </param>
   </block>
   <block>
-    <key>blocks_random_pdu</key>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>blocks_random_pdu_0</value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>483e6-300</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>minsize</key>
-      <value>50</value>
+      <key>_coordinate</key>
+      <value>(576, 555)</value>
     </param>
     <param>
-      <key>maxsize</key>
-      <value>100</value>
+      <key>gui_hint</key>
+      <value>0,1,1,1</value>
     </param>
     <param>
-      <key>mask</key>
-      <value>0xFF</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>length_modulo</key>
-      <value>2</value>
+      <key>id</key>
+      <value>freq</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>label</key>
+      <value>Frequency</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>start</key>
+      <value>50e6</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>step</key>
+      <value>500e3</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(208, 67)</value>
+      <key>stop</key>
+      <value>3e9</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>variable_cc_decoder_def</key>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>dec</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>value</key>
+      <value>50</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(448, 683)</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>gui_hint</key>
+      <value>1,0,1,1</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>4</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>id</key>
+      <value>gain</value>
     </param>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>label</key>
+      <value>Gain</value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>state_start</key>
+      <key>start</key>
       <value>0</value>
     </param>
     <param>
-      <key>state_end</key>
-      <value>-1</value>
+      <key>step</key>
+      <value>1</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>stop</key>
+      <value>83</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>rangeType</key>
+      <value>float</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
       <key>comment</key>
       <value></value>
     </param>
     <param>
+      <key>_enabled</key>
+      <value>True</value>
+    </param>
+    <param>
       <key>_coordinate</key>
-      <value>(1384, 779)</value>
+      <value>(272, 651)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_decoder_def</key>
     <param>
       <key>id</key>
-      <value>dec</value>
-    </param>
-    <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <value>k</value>
     </param>
     <param>
       <key>value</key>
-      <value>"ok"</value>
+      <value>7</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(80, 75)</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>id</key>
+      <value>nfilts</value>
     </param>
     <param>
-      <key>prob</key>
-      <value>0.5</value>
+      <key>value</key>
+      <value>32</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1184, 699)</value>
+      <value>(1272, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>ntaps</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>len(tx_rrc_taps)</value>
+    </param>
   </block>
   <block>
-    <key>variable_cc_encoder_def</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>enc</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>False</value>
+      <value>True</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(320, 715)</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>id</key>
+      <value>polys</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>value</key>
+      <value>[109, 79]</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>k</key>
-      <value>k</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>rate</key>
-      <value>rate</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>polys</key>
-      <value>polys</value>
+      <key>_coordinate</key>
+      <value>(344, 651)</value>
     </param>
     <param>
-      <key>state_start</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>mode</key>
-      <value>fec.CC_TERMINATED</value>
+      <key>id</key>
+      <value>rate</value>
     </param>
     <param>
-      <key>padding</key>
-      <value>False</value>
+      <key>value</key>
+      <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>variable</key>
     <param>
-      <key>alias</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1384, 603)</value>
+      <value>(248, 715)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
+    <param>
+      <key>id</key>
+      <value>rep</value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>3</value>
+    </param>
   </block>
   <block>
-    <key>variable_dummy_encoder_def</key>
+    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>enc</value>
+      <key>comment</key>
+      <value></value>
+    </param>
+    <param>
+      <key>value</key>
+      <value>1000e3</value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>_coordinate</key>
+      <value>(448, 555)</value>
+    </param>
+    <param>
+      <key>gui_hint</key>
+      <value>0,0,1,1</value>
+    </param>
+    <param>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>id</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>label</key>
+      <value>Sample Rate</value>
     </param>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>min_len</key>
+      <value>200</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>orient</key>
+      <value>Qt.Horizontal</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>start</key>
+      <value>200e3</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(992, 603)</value>
+      <key>step</key>
+      <value>200e3</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>stop</key>
+      <value>10e6</value>
+    </param>
+    <param>
+      <key>rangeType</key>
+      <value>float</value>
+    </param>
+    <param>
+      <key>widget</key>
+      <value>counter_slider</value>
     </param>
   </block>
   <block>
-    <key>variable_dummy_decoder_def</key>
+    <key>variable</key>
     <param>
-      <key>id</key>
-      <value>dec</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>value</key>
-      <value>"ok"</value>
+      <key>_coordinate</key>
+      <value>(8, 75)</value>
     </param>
     <param>
-      <key>ndim</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>id</key>
+      <value>sps</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>value</key>
+      <value>2</value>
     </param>
+  </block>
+  <block>
+    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha</key>
+      <value>eb</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(992, 683)</value>
+      <value>(944, 11)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_repetition_encoder_def</key>
     <param>
-      <key>id</key>
-      <value>enc</value>
+      <key>gain</key>
+      <value>nfilts</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>id</key>
+      <value>tx_rrc_taps</value>
     </param>
     <param>
-      <key>ndim</key>
-      <value>0</value>
+      <key>ntaps</key>
+      <value>5*sps*nfilts</value>
     </param>
     <param>
-      <key>dim1</key>
-      <value>1</value>
+      <key>samp_rate</key>
+      <value>nfilts</value>
     </param>
     <param>
-      <key>dim2</key>
-      <value>1</value>
+      <key>sym_rate</key>
+      <value>1.0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_message_debug</key>
     <param>
-      <key>framebits</key>
-      <value>8000</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>rep</key>
-      <value>rep</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>alias</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(1184, 603)</value>
+      <value>(936, 297)</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
       <key>id</key>
-      <value>noise</value>
+      <value>blocks_message_debug_0</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_multiply_const_vxx</key>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>label</key>
-      <value>Noise Amp</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>value</key>
-      <value>0</value>
+      <key>const</key>
+      <value>amp</value>
     </param>
     <param>
-      <key>start</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>stop</key>
-      <value>0.5</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>_coordinate</key>
+      <value>(952, 211)</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>id</key>
+      <value>blocks_multiply_const_vxx_0</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,0,1,1</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>minoutbuf</key>
+      <value>0</value>
+    </param>
+    <param>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_tag_debug</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -992,60 +1068,52 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(40, 627)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>freq_offset</value>
+      <key>display</key>
+      <value>True</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>0</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Freq. Offset</value>
+      <key>_coordinate</key>
+      <value>(1472, 275)</value>
     </param>
     <param>
-      <key>value</key>
+      <key>_rotation</key>
       <value>0</value>
     </param>
     <param>
-      <key>start</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>stop</key>
-      <value>1</value>
+      <key>id</key>
+      <value>blocks_tag_debug_0</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.001</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>filter</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>name</key>
+      <value></value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>num_inputs</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>0,1,1,1</value>
+      <key>vlen</key>
+      <value>1</value>
     </param>
+  </block>
+  <block>
+    <key>blocks_tuntap_pdu</key>
     <param>
       <key>alias</key>
       <value></value>
@@ -1055,485 +1123,476 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(152, 627)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0_0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_enabled</key>
+      <key>istunflag</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>_coordinate</key>
+      <value>(272, 195)</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>id</key>
+      <value>blocks_tuntap_pdu_0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>ifn</key>
+      <value>tun0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>mtu</key>
+      <value>10000</value>
     </param>
     <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
+  </block>
+  <block>
+    <key>packet_tx</key>
     <param>
-      <key>_coordinate</key>
-      <value>(336, 211)</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>comment</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>blocks_pdu_to_tagged_stream</key>
     <param>
-      <key>id</key>
-      <value>blocks_pdu_to_tagged_stream_0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
       <value>True</value>
     </param>
     <param>
-      <key>type</key>
-      <value>byte</value>
+      <key>_coordinate</key>
+      <value>(496, 163)</value>
     </param>
     <param>
-      <key>tag</key>
-      <value>packet_len</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>hdr_enc</key>
+      <value>enc_hdr</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>hdr_const</key>
+      <value>Const_HDR</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>id</key>
+      <value>packet_tx_0</value>
     </param>
     <param>
       <key>maxoutbuf</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(336, 283)</value>
+      <key>formatter</key>
+      <value>formatter</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>pld_enc</key>
+      <value>enc</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
-      <key>id</key>
-      <value>digital_map_bb_1_0</value>
+      <key>pld_const</key>
+      <value>Const_PLD</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>psf_taps</key>
+      <value>tx_rrc_taps</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_PLD.pre_diff_code()</value>
+      <key>sps</key>
+      <value>sps</value>
+    </param>
+  </block>
+  <block>
+    <key>qtgui_const_sink_x</key>
+    <param>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
       <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>comment</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(1264, 475)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 283)</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0_0</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>id</key>
+      <value>qtgui_const_sink_x_0</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_PLD.bits_per_symbol()</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>marker1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>style1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>color10</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label10</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(560, 275)</value>
+      <key>marker10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style10</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_map_bb</key>
     <param>
-      <key>id</key>
-      <value>digital_map_bb_1</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>map</key>
-      <value>Const_HDR.pre_diff_code()</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>marker2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>style2</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(760, 211)</value>
+      <key>color3</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>label3</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>blocks_repack_bits_bb</key>
     <param>
-      <key>id</key>
-      <value>blocks_repack_bits_bb_0</value>
+      <key>marker3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>style3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>k</key>
-      <value>8</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>l</key>
-      <value>Const_HDR.bits_per_symbol()</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>len_tag_key</key>
-      <value>packet_len</value>
+      <key>color4</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>align_output</key>
-      <value>False</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>endianness</key>
-      <value>gr.GR_MSB_FIRST</value>
+      <key>marker4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>style4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>color5</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(560, 203)</value>
+      <key>marker5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style5</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_packet_format_async</key>
     <param>
-      <key>id</key>
-      <value>digital_packet_format_async_1</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>formatter</key>
-      <value>formatter</value>
+      <key>color6</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label6</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>marker6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>style6</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>alpha7</key>
+      <value>1.0</value>
+    </param>
+    <param>
+      <key>color7</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(80, 232)</value>
+      <key>marker7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>style7</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0_0</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>color8</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_PLD.points()</value>
+      <key>marker8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>dimension</key>
-      <value>1</value>
+      <key>style8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>num_ports</key>
+      <key>width8</key>
       <value>1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>color9</key>
+      <value>"red"</value>
+    </param>
+    <param>
+      <key>label9</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>marker9</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>style9</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 275)</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>id</key>
-      <value>mod_header</value>
+      <key>size</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Header</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1120, 211)</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>tr_tag</key>
+      <value>packet_len</value>
     </param>
-  </block>
-  <block>
-    <key>digital_chunks_to_symbols_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_chunks_to_symbols_xx_0</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>in_type</key>
-      <value>byte</value>
+      <key>xmax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>out_type</key>
-      <value>complex</value>
+      <key>xmin</key>
+      <value>-2</value>
     </param>
     <param>
-      <key>symbol_table</key>
-      <value>Const_HDR.points()</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>dimension</key>
-      <value>1</value>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>num_ports</key>
-      <value>1</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>average</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw</key>
+      <value>1</value>
     </param>
     <param>
-      <key>minoutbuf</key>
-      <value>0</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>fc</key>
       <value>0</value>
     </param>
     <param>
@@ -1541,317 +1600,279 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 203)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
-  </block>
-  <block>
-    <key>virtual_sink</key>
     <param>
-      <key>id</key>
-      <value>mod_payload</value>
+      <key>affinity</key>
+      <value></value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
-      <key>stream_id</key>
-      <value>Mod Payload</value>
+      <key>fftsize</key>
+      <value>1024</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>_coordinate</key>
+      <value>(1264, 395)</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1120, 283)</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
       <key>_rotation</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_packet_formatter_default</key>
+    <param>
+      <key>grid</key>
+      <value>False</value>
+    </param>
     <param>
       <key>id</key>
-      <value>formatter</value>
+      <value>qtgui_freq_sink_x_0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>access_code</key>
-      <value>0</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label1</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1072, 3)</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
-      <key>id</key>
-      <value>Const_PLD</value>
+      <key>color10</key>
+      <value>"dark blue"</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
-    </param>
-    <param>
-      <key>sym_map</key>
-      <value>digital.psk_4()[1]</value>
-    </param>
-    <param>
-      <key>const_points</key>
-      <value>digital.psk_4()[0]</value>
-    </param>
-    <param>
-      <key>rot_sym</key>
-      <value>4</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>dims</key>
+      <key>width10</key>
       <value>1</value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label2</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(896, 3)</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
-      <key>id</key>
-      <value>Const_PLD</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>False</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>rot_sym</key>
-      <value>2</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>dims</key>
+      <key>width4</key>
       <value>1</value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>label5</key>
       <value></value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(736, 3)</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
-  </block>
-  <block>
-    <key>variable_constellation</key>
     <param>
-      <key>id</key>
-      <value>Const_HDR</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sym_map</key>
-      <value>digital.psk_2()[1]</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>const_points</key>
-      <value>digital.psk_2()[0]</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>rot_sym</key>
-      <value>2</value>
+      <key>label7</key>
+      <value></value>
     </param>
     <param>
-      <key>dims</key>
+      <key>width7</key>
       <value>1</value>
     </param>
     <param>
-      <key>precision</key>
-      <value>8</value>
-    </param>
-    <param>
-      <key>soft_dec_lut</key>
-      <value>'auto'</value>
+      <key>alpha8</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>label8</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(576, 3)</value>
-    </param>
-    <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
-  </block>
-  <block>
-    <key>variable_rrc_filter_taps</key>
     <param>
-      <key>id</key>
-      <value>tx_rrc_taps</value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>gain</key>
-      <value>nfilts</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>samp_rate</key>
-      <value>nfilts</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>sym_rate</key>
-      <value>1.0</value>
+      <key>maxoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha</key>
-      <value>eb</value>
+      <key>minoutbuf</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ntaps</key>
-      <value>5*sps*nfilts</value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>nconnections</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>showports</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1304, 3)</value>
+      <key>freqhalf</key>
+      <value>True</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>tr_chan</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>variable_qtgui_range</key>
     <param>
-      <key>id</key>
-      <value>time_offset</value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>label</key>
-      <value>Time Offset</value>
+      <key>tr_tag</key>
+      <value>""</value>
     </param>
     <param>
-      <key>value</key>
-      <value>1.0</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>start</key>
-      <value>0.99</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>stop</key>
-      <value>1.01</value>
+      <key>wintype</key>
+      <value>firdes.WIN_BLACKMAN_hARRIS</value>
     </param>
     <param>
-      <key>step</key>
-      <value>0.0001</value>
+      <key>label</key>
+      <value>Relative Gain</value>
     </param>
     <param>
-      <key>widget</key>
-      <value>counter_slider</value>
+      <key>ymax</key>
+      <value>10</value>
     </param>
     <param>
-      <key>orient</key>
-      <value>Qt.Horizontal</value>
+      <key>ymin</key>
+      <value>-140</value>
     </param>
     <param>
-      <key>min_len</key>
-      <value>200</value>
+      <key>units</key>
+      <value>dB</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_time_sink_x</key>
     <param>
-      <key>gui_hint</key>
-      <value>1,0,1,1</value>
+      <key>autoscale</key>
+      <value>False</value>
     </param>
     <param>
       <key>alias</key>
@@ -1862,1437 +1883,1330 @@
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(264, 627)</value>
+      <key>ctrlpanel</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>affinity</key>
+      <value></value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_tab_widget</key>
     <param>
-      <key>id</key>
-      <value>tab0</value>
+      <key>entags</key>
+      <value>True</value>
     </param>
     <param>
       <key>_enabled</key>
-      <value>True</value>
+      <value>1</value>
     </param>
     <param>
-      <key>num_tabs</key>
-      <value>2</value>
+      <key>_coordinate</key>
+      <value>(1264, 315)</value>
     </param>
     <param>
-      <key>label0</key>
-      <value>Freq.</value>
+      <key>gui_hint</key>
+      <value>address@hidden</value>
     </param>
     <param>
-      <key>label1</key>
-      <value>Const.</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label2</key>
-      <value>Tab 2</value>
+      <key>grid</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label3</key>
-      <value>Tab 3</value>
+      <key>id</key>
+      <value>qtgui_time_sink_x_1</value>
     </param>
     <param>
-      <key>label4</key>
-      <value>Tab 4</value>
+      <key>legend</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label5</key>
-      <value>Tab 5</value>
+      <key>alpha1</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>label6</key>
-      <value>Tab 6</value>
+      <key>color1</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>label7</key>
-      <value>Tab 7</value>
+      <key>label1</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
-      <value>Tab 8</value>
+      <key>marker1</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>label9</key>
-      <value>Tab 9</value>
+      <key>style1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label10</key>
-      <value>Tab 10</value>
+      <key>width1</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label11</key>
-      <value>Tab 11</value>
+      <key>alpha10</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>label12</key>
-      <value>Tab 12</value>
+      <key>color10</key>
+      <value>"blue"</value>
     </param>
     <param>
-      <key>label13</key>
-      <value>Tab 13</value>
+      <key>label10</key>
+      <value></value>
     </param>
     <param>
-      <key>label14</key>
-      <value>Tab 14</value>
+      <key>marker10</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>label15</key>
-      <value>Tab 15</value>
+      <key>style10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label16</key>
-      <value>Tab 16</value>
+      <key>width10</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label17</key>
-      <value>Tab 17</value>
+      <key>alpha2</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>label18</key>
-      <value>Tab 18</value>
+      <key>color2</key>
+      <value>"red"</value>
     </param>
     <param>
-      <key>label19</key>
-      <value>Tab 19</value>
+      <key>label2</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>2,1,1,1</value>
+      <key>marker2</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>style2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>width2</key>
+      <value>1</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(40, 755)</value>
+      <key>alpha3</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>color3</key>
+      <value>"green"</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_time_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_time_sink_x_1</value>
+      <key>label3</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>marker3</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>style3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>width3</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ylabel</key>
-      <value>Amplitude</value>
+      <key>alpha4</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>yunit</key>
-      <value>""</value>
+      <key>color4</key>
+      <value>"black"</value>
     </param>
     <param>
-      <key>size</key>
-      <value>2500</value>
+      <key>label4</key>
+      <value></value>
     </param>
     <param>
-      <key>srate</key>
-      <value>1</value>
+      <key>marker4</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>style4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>width4</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>alpha5</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>color5</key>
+      <value>"cyan"</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>label5</key>
+      <value></value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>marker5</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>entags</key>
-      <value>True</value>
+      <key>style5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>2,0,1,1</value>
+      <key>width5</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>alpha6</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>color6</key>
+      <value>"magenta"</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>label6</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_delay</key>
-      <value>0</value>
+      <key>marker6</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>tr_chan</key>
-      <value>0</value>
+      <key>style6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>width6</key>
+      <value>1</value>
     </param>
     <param>
-      <key>ctrlpanel</key>
-      <value>False</value>
+      <key>alpha7</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>color7</key>
+      <value>"yellow"</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>label7</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
-    </param>
-    <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>marker7</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style1</key>
+      <key>style7</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker1</key>
-      <value>-1</value>
+      <key>width7</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha1</key>
+      <key>alpha8</key>
       <value>1.0</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>color8</key>
+      <value>"dark red"</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>label8</key>
+      <value></value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>marker8</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>style2</key>
+      <key>style8</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>-1</value>
-    </param>
-    <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>width8</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>alpha9</key>
+      <value>1.0</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>color9</key>
+      <value>"dark green"</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>label9</key>
+      <value></value>
     </param>
     <param>
-      <key>style3</key>
-      <value>1</value>
+      <key>marker9</key>
+      <value>-1</value>
     </param>
     <param>
-      <key>marker3</key>
-      <value>-1</value>
+      <key>style9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>width9</key>
+      <value>1</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>name</key>
+      <value>""</value>
     </param>
     <param>
-      <key>width4</key>
+      <key>nconnections</key>
       <value>1</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>size</key>
+      <value>2500</value>
     </param>
     <param>
-      <key>style4</key>
+      <key>srate</key>
       <value>1</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>-1</value>
+      <key>tr_chan</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>tr_delay</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>tr_level</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>tr_mode</key>
+      <value>qtgui.TRIG_MODE_FREE</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>tr_slope</key>
+      <value>qtgui.TRIG_SLOPE_POS</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>1</value>
+      <key>tr_tag</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>-1</value>
+      <key>type</key>
+      <value>complex</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>update_time</key>
+      <value>0.10</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>ylabel</key>
+      <value>Amplitude</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>yunit</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>ymax</key>
+      <value>2</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>1</value>
+      <key>ymin</key>
+      <value>-2</value>
     </param>
+  </block>
+  <block>
+    <key>qtgui_tab_widget</key>
     <param>
-      <key>marker6</key>
-      <value>-1</value>
+      <key>alias</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>_coordinate</key>
+      <value>(1096, 11)</value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>gui_hint</key>
+      <value>2,0,1,2</value>
     </param>
     <param>
-      <key>style7</key>
-      <value>1</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>-1</value>
+      <key>id</key>
+      <value>tab0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>label0</key>
+      <value>Time</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>label1</key>
+      <value>Freq.</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>label10</key>
+      <value>Tab 10</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>label11</key>
+      <value>Tab 11</value>
     </param>
     <param>
-      <key>style8</key>
-      <value>1</value>
+      <key>label12</key>
+      <value>Tab 12</value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>-1</value>
+      <key>label13</key>
+      <value>Tab 13</value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>label14</key>
+      <value>Tab 14</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>label15</key>
+      <value>Tab 15</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>label16</key>
+      <value>Tab 16</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>label17</key>
+      <value>Tab 17</value>
     </param>
     <param>
-      <key>style9</key>
-      <value>1</value>
+      <key>label18</key>
+      <value>Tab 18</value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>-1</value>
+      <key>label19</key>
+      <value>Tab 19</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>label2</key>
+      <value>Const.</value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>label3</key>
+      <value>Tab 3</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>label4</key>
+      <value>Tab 4</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"blue"</value>
+      <key>label5</key>
+      <value>Tab 5</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>1</value>
+      <key>label6</key>
+      <value>Tab 6</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>-1</value>
+      <key>label7</key>
+      <value>Tab 7</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>label8</key>
+      <value>Tab 8</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>label9</key>
+      <value>Tab 9</value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>num_tabs</key>
+      <value>3</value>
     </param>
+  </block>
+  <block>
+    <key>uhd_usrp_sink</key>
     <param>
-      <key>comment</key>
+      <key>alias</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 339)</value>
+      <key>ant0</key>
+      <value>TX/RX</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>bw0</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>digital_burst_shaper_xx</key>
     <param>
-      <key>id</key>
-      <value>digital_burst_shaper_xx_0</value>
+      <key>center_freq0</key>
+      <value>uhd.tune_request(freq, samp_rate/2.0)</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>norm_gain0</key>
+      <value>False</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>gain0</key>
+      <value>gain</value>
     </param>
     <param>
-      <key>window</key>
-      <value>firdes.window(firdes.WIN_HANN, 20, 0)</value>
+      <key>ant10</key>
+      <value></value>
     </param>
     <param>
-      <key>pre_padding</key>
-      <value>20</value>
+      <key>bw10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>post_padding</key>
-      <value>20</value>
+      <key>center_freq10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>insert_phasing</key>
-      <value>True</value>
+      <key>norm_gain10</key>
+      <value>False</value>
     </param>
     <param>
-      <key>length_tag_name</key>
-      <value>"packet_len"</value>
+      <key>gain10</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant11</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw11</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>center_freq11</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>norm_gain11</key>
+      <value>False</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>gain11</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(448, 379)</value>
+      <key>ant12</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>bw12</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>pfb_arb_resampler_xxx</key>
     <param>
-      <key>id</key>
-      <value>pfb_arb_resampler_xxx_0</value>
+      <key>center_freq12</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>norm_gain12</key>
+      <value>False</value>
     </param>
     <param>
-      <key>type</key>
-      <value>ccf</value>
+      <key>gain12</key>
+      <value>0</value>
     </param>
     <param>
-      <key>rrate</key>
-      <value>sps</value>
+      <key>ant13</key>
+      <value></value>
     </param>
     <param>
-      <key>taps</key>
-      <value>tx_rrc_taps</value>
+      <key>bw13</key>
+      <value>0</value>
     </param>
     <param>
-      <key>nfilts</key>
-      <value>nfilts</value>
+      <key>center_freq13</key>
+      <value>0</value>
     </param>
     <param>
-      <key>atten</key>
-      <value>100</value>
+      <key>norm_gain13</key>
+      <value>False</value>
     </param>
     <param>
-      <key>samp_delay</key>
+      <key>gain13</key>
       <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant14</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw14</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>center_freq14</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
-      <value>0</value>
+      <key>norm_gain14</key>
+      <value>False</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
+      <key>gain14</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(680, 387)</value>
+      <key>ant15</key>
+      <value></value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>bw15</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>channels_channel_model</key>
-    <param>
-      <key>id</key>
-      <value>channels_channel_model_0</value>
-    </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>center_freq15</key>
+      <value>0</value>
     </param>
     <param>
-      <key>noise_voltage</key>
-      <value>noise</value>
+      <key>norm_gain15</key>
+      <value>False</value>
     </param>
     <param>
-      <key>freq_offset</key>
-      <value>freq_offset</value>
+      <key>gain15</key>
+      <value>0</value>
     </param>
     <param>
-      <key>epsilon</key>
-      <value>time_offset</value>
+      <key>ant16</key>
+      <value></value>
     </param>
     <param>
-      <key>taps</key>
-      <value>1.0</value>
+      <key>bw16</key>
+      <value>0</value>
     </param>
     <param>
-      <key>seed</key>
+      <key>center_freq16</key>
       <value>0</value>
     </param>
     <param>
-      <key>block_tags</key>
+      <key>norm_gain16</key>
       <value>False</value>
     </param>
     <param>
-      <key>alias</key>
-      <value></value>
+      <key>gain16</key>
+      <value>0</value>
     </param>
     <param>
-      <key>affinity</key>
+      <key>ant17</key>
       <value></value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>bw17</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>center_freq17</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
-      <value></value>
-    </param>
-    <param>
-      <key>_coordinate</key>
-      <value>(936, 379)</value>
+      <key>norm_gain17</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>gain17</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_freq_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_freq_sink_x_0</value>
+      <key>ant18</key>
+      <value></value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>bw18</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>center_freq18</key>
+      <value>0</value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>norm_gain18</key>
+      <value>False</value>
     </param>
     <param>
-      <key>fftsize</key>
-      <value>1024</value>
+      <key>gain18</key>
+      <value>0</value>
     </param>
     <param>
-      <key>freqhalf</key>
-      <value>True</value>
+      <key>ant19</key>
+      <value></value>
     </param>
     <param>
-      <key>wintype</key>
-      <value>firdes.WIN_BLACKMAN_hARRIS</value>
+      <key>bw19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>fc</key>
+      <key>center_freq19</key>
       <value>0</value>
     </param>
     <param>
-      <key>bw</key>
-      <value>1</value>
+      <key>norm_gain19</key>
+      <value>False</value>
     </param>
     <param>
-      <key>grid</key>
-      <value>False</value>
+      <key>gain19</key>
+      <value>0</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>ant1</key>
+      <value></value>
     </param>
     <param>
-      <key>average</key>
-      <value>1.0</value>
+      <key>bw1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-140</value>
+      <key>center_freq1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>10</value>
+      <key>norm_gain1</key>
+      <value>False</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>gain1</key>
+      <value>0</value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>ant20</key>
+      <value></value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>bw20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>showports</key>
-      <value>True</value>
+      <key>center_freq20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_FREE</value>
+      <key>norm_gain20</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>gain20</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>ant21</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw21</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>""</value>
+      <key>center_freq21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ctrlpanel</key>
+      <key>norm_gain21</key>
       <value>False</value>
     </param>
     <param>
-      <key>legend</key>
-      <value>False</value>
+      <key>gain21</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label1</key>
+      <key>ant22</key>
       <value></value>
     </param>
     <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>bw22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>center_freq22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>norm_gain22</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>gain22</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>ant23</key>
+      <value></value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>bw23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>center_freq23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label3</key>
-      <value></value>
+      <key>norm_gain23</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>gain23</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"green"</value>
+      <key>ant24</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>bw24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>center_freq24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>norm_gain24</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"black"</value>
+      <key>gain24</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>ant25</key>
+      <value></value>
     </param>
     <param>
-      <key>label5</key>
-      <value></value>
+      <key>bw25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>center_freq25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"cyan"</value>
+      <key>norm_gain25</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>gain25</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label6</key>
+      <key>ant26</key>
       <value></value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>bw26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"magenta"</value>
+      <key>center_freq26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>norm_gain26</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label7</key>
-      <value></value>
+      <key>gain26</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>ant27</key>
+      <value></value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"yellow"</value>
+      <key>bw27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>center_freq27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label8</key>
-      <value></value>
+      <key>norm_gain27</key>
+      <value>False</value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>gain27</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"dark red"</value>
+      <key>ant28</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>bw28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label9</key>
-      <value></value>
+      <key>center_freq28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>norm_gain28</key>
+      <value>False</value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"dark green"</value>
+      <key>gain28</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>ant29</key>
+      <value></value>
     </param>
     <param>
-      <key>label10</key>
-      <value></value>
+      <key>bw29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>center_freq29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"dark blue"</value>
+      <key>norm_gain29</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>gain29</key>
+      <value>0</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>ant2</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>bw2</key>
+      <value>0</value>
     </param>
     <param>
-      <key>minoutbuf</key>
+      <key>center_freq2</key>
       <value>0</value>
     </param>
     <param>
-      <key>maxoutbuf</key>
+      <key>norm_gain2</key>
+      <value>False</value>
+    </param>
+    <param>
+      <key>gain2</key>
       <value>0</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>ant30</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 419)</value>
+      <key>bw30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>_rotation</key>
+      <key>center_freq30</key>
       <value>0</value>
     </param>
-  </block>
-  <block>
-    <key>qtgui_const_sink_x</key>
     <param>
-      <key>id</key>
-      <value>qtgui_const_sink_x_0</value>
+      <key>norm_gain30</key>
+      <value>False</value>
     </param>
     <param>
-      <key>_enabled</key>
-      <value>True</value>
+      <key>gain30</key>
+      <value>0</value>
     </param>
     <param>
-      <key>type</key>
-      <value>complex</value>
+      <key>ant31</key>
+      <value></value>
     </param>
     <param>
-      <key>name</key>
-      <value>""</value>
+      <key>bw31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>size</key>
-      <value>1024</value>
+      <key>center_freq31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>grid</key>
+      <key>norm_gain31</key>
       <value>False</value>
     </param>
     <param>
-      <key>autoscale</key>
-      <value>False</value>
+      <key>gain31</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymin</key>
-      <value>-2</value>
+      <key>ant3</key>
+      <value></value>
+    </param>
+    <param>
+      <key>bw3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>ymax</key>
-      <value>2</value>
+      <key>center_freq3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>xmin</key>
-      <value>-2</value>
+      <key>norm_gain3</key>
+      <value>False</value>
     </param>
     <param>
-      <key>xmax</key>
-      <value>2</value>
+      <key>gain3</key>
+      <value>0</value>
     </param>
     <param>
-      <key>nconnections</key>
-      <value>1</value>
+      <key>ant4</key>
+      <value></value>
     </param>
     <param>
-      <key>update_time</key>
-      <value>0.10</value>
+      <key>bw4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>gui_hint</key>
-      <value>address@hidden</value>
+      <key>center_freq4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_mode</key>
-      <value>qtgui.TRIG_MODE_TAG</value>
+      <key>norm_gain4</key>
+      <value>False</value>
     </param>
     <param>
-      <key>tr_slope</key>
-      <value>qtgui.TRIG_SLOPE_POS</value>
+      <key>gain4</key>
+      <value>0</value>
     </param>
     <param>
-      <key>tr_level</key>
-      <value>0.0</value>
+      <key>ant5</key>
+      <value></value>
     </param>
     <param>
-      <key>tr_chan</key>
+      <key>bw5</key>
       <value>0</value>
     </param>
     <param>
-      <key>tr_tag</key>
-      <value>packet_len</value>
+      <key>center_freq5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>legend</key>
+      <key>norm_gain5</key>
       <value>False</value>
     </param>
     <param>
-      <key>label1</key>
-      <value></value>
-    </param>
-    <param>
-      <key>width1</key>
-      <value>1</value>
+      <key>gain5</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color1</key>
-      <value>"blue"</value>
+      <key>ant6</key>
+      <value></value>
     </param>
     <param>
-      <key>style1</key>
+      <key>bw6</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker1</key>
+      <key>center_freq6</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha1</key>
-      <value>1.0</value>
+      <key>norm_gain6</key>
+      <value>False</value>
     </param>
     <param>
-      <key>label2</key>
-      <value></value>
+      <key>gain6</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width2</key>
-      <value>1</value>
+      <key>ant7</key>
+      <value></value>
     </param>
     <param>
-      <key>color2</key>
-      <value>"red"</value>
+      <key>bw7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style2</key>
+      <key>center_freq7</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker2</key>
-      <value>0</value>
+      <key>norm_gain7</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alpha2</key>
-      <value>1.0</value>
+      <key>gain7</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label3</key>
+      <key>ant8</key>
       <value></value>
     </param>
     <param>
-      <key>width3</key>
-      <value>1</value>
+      <key>bw8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color3</key>
-      <value>"red"</value>
+      <key>center_freq8</key>
+      <value>0</value>
     </param>
     <param>
-      <key>style3</key>
-      <value>0</value>
+      <key>norm_gain8</key>
+      <value>False</value>
     </param>
     <param>
-      <key>marker3</key>
+      <key>gain8</key>
       <value>0</value>
     </param>
     <param>
-      <key>alpha3</key>
-      <value>1.0</value>
+      <key>ant9</key>
+      <value></value>
     </param>
     <param>
-      <key>label4</key>
-      <value></value>
+      <key>bw9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>width4</key>
-      <value>1</value>
+      <key>center_freq9</key>
+      <value>0</value>
     </param>
     <param>
-      <key>color4</key>
-      <value>"red"</value>
+      <key>norm_gain9</key>
+      <value>False</value>
     </param>
     <param>
-      <key>style4</key>
+      <key>gain9</key>
       <value>0</value>
     </param>
     <param>
-      <key>marker4</key>
-      <value>0</value>
+      <key>clock_rate</key>
+      <value>0.0</value>
     </param>
     <param>
-      <key>alpha4</key>
-      <value>1.0</value>
+      <key>comment</key>
+      <value></value>
     </param>
     <param>
-      <key>label5</key>
+      <key>affinity</key>
       <value></value>
     </param>
     <param>
-      <key>width5</key>
-      <value>1</value>
+      <key>dev_addr</key>
+      <value>""</value>
     </param>
     <param>
-      <key>color5</key>
-      <value>"red"</value>
+      <key>dev_args</key>
+      <value>""</value>
     </param>
     <param>
-      <key>style5</key>
-      <value>0</value>
+      <key>_enabled</key>
+      <value>True</value>
     </param>
     <param>
-      <key>marker5</key>
-      <value>0</value>
+      <key>_coordinate</key>
+      <value>(1264, 99)</value>
     </param>
     <param>
-      <key>alpha5</key>
-      <value>1.0</value>
+      <key>_rotation</key>
+      <value>0</value>
     </param>
     <param>
-      <key>label6</key>
-      <value></value>
+      <key>id</key>
+      <value>uhd_usrp_sink_0</value>
     </param>
     <param>
-      <key>width6</key>
-      <value>1</value>
+      <key>type</key>
+      <value>fc32</value>
     </param>
     <param>
-      <key>color6</key>
-      <value>"red"</value>
+      <key>clock_source0</key>
+      <value>gpsdo</value>
     </param>
     <param>
-      <key>style6</key>
-      <value>0</value>
+      <key>sd_spec0</key>
+      <value></value>
     </param>
     <param>
-      <key>marker6</key>
-      <value>0</value>
+      <key>time_source0</key>
+      <value>gpsdo</value>
     </param>
     <param>
-      <key>alpha6</key>
-      <value>1.0</value>
+      <key>clock_source1</key>
+      <value></value>
     </param>
     <param>
-      <key>label7</key>
+      <key>sd_spec1</key>
       <value></value>
     </param>
     <param>
-      <key>width7</key>
-      <value>1</value>
+      <key>time_source1</key>
+      <value></value>
     </param>
     <param>
-      <key>color7</key>
-      <value>"red"</value>
+      <key>clock_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>style7</key>
-      <value>0</value>
+      <key>sd_spec2</key>
+      <value></value>
     </param>
     <param>
-      <key>marker7</key>
-      <value>0</value>
+      <key>time_source2</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha7</key>
-      <value>1.0</value>
+      <key>clock_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>label8</key>
+      <key>sd_spec3</key>
       <value></value>
     </param>
     <param>
-      <key>width8</key>
-      <value>1</value>
+      <key>time_source3</key>
+      <value></value>
     </param>
     <param>
-      <key>color8</key>
-      <value>"red"</value>
+      <key>clock_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>style8</key>
-      <value>0</value>
+      <key>sd_spec4</key>
+      <value></value>
     </param>
     <param>
-      <key>marker8</key>
-      <value>0</value>
+      <key>time_source4</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha8</key>
-      <value>1.0</value>
+      <key>clock_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>label9</key>
+      <key>sd_spec5</key>
       <value></value>
     </param>
     <param>
-      <key>width9</key>
-      <value>1</value>
+      <key>time_source5</key>
+      <value></value>
     </param>
     <param>
-      <key>color9</key>
-      <value>"red"</value>
+      <key>clock_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>style9</key>
-      <value>0</value>
+      <key>sd_spec6</key>
+      <value></value>
     </param>
     <param>
-      <key>marker9</key>
-      <value>0</value>
+      <key>time_source6</key>
+      <value></value>
     </param>
     <param>
-      <key>alpha9</key>
-      <value>1.0</value>
+      <key>clock_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>label10</key>
+      <key>sd_spec7</key>
       <value></value>
     </param>
     <param>
-      <key>width10</key>
-      <value>1</value>
+      <key>time_source7</key>
+      <value></value>
     </param>
     <param>
-      <key>color10</key>
-      <value>"red"</value>
+      <key>nchan</key>
+      <value>1</value>
     </param>
     <param>
-      <key>style10</key>
-      <value>0</value>
+      <key>num_mboards</key>
+      <value>1</value>
     </param>
     <param>
-      <key>marker10</key>
-      <value>0</value>
+      <key>samp_rate</key>
+      <value>samp_rate</value>
     </param>
     <param>
-      <key>alpha10</key>
-      <value>1.0</value>
+      <key>hide_cmd_port</key>
+      <value>False</value>
     </param>
     <param>
-      <key>alias</key>
+      <key>stream_args</key>
       <value></value>
     </param>
     <param>
-      <key>affinity</key>
-      <value></value>
+      <key>stream_chans</key>
+      <value>[]</value>
     </param>
     <param>
-      <key>comment</key>
+      <key>sync</key>
       <value></value>
     </param>
     <param>
-      <key>_coordinate</key>
-      <value>(1192, 499)</value>
+      <key>len_tag_name</key>
+      <value>packet_len</value>
     </param>
     <param>
-      <key>_rotation</key>
-      <value>0</value>
+      <key>otw</key>
+      <value></value>
     </param>
   </block>
   <connection>
-    <source_block_id>rx_mod_header</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>rx_mod_payload</source_block_id>
-    <sink_block_id>blocks_tagged_stream_mux_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>1</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_crc32_async_bb_1</source_block_id>
-    <sink_block_id>fec_async_encoder_0</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>fec_async_encoder_0</source_block_id>
-    <sink_block_id>digital_packet_format_async_1</sink_block_id>
-    <source_key>out</source_key>
-    <sink_key>in</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0_0</sink_block_id>
-    <source_key>header</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_packet_format_async_1</source_block_id>
-    <sink_block_id>blocks_pdu_to_tagged_stream_0</sink_block_id>
-    <source_key>payload</source_key>
-    <sink_key>pdus</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>pfb_arb_resampler_xxx_0</source_block_id>
-    <sink_block_id>channels_channel_model_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>blocks_tag_debug_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_tagged_stream_mux_0</source_block_id>
-    <sink_block_id>digital_burst_shaper_xx_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_burst_shaper_xx_0</source_block_id>
-    <sink_block_id>pfb_arb_resampler_xxx_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_freq_sink_x_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>qtgui_time_sink_x_1</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>channels_channel_model_0</source_block_id>
-    <sink_block_id>qtgui_const_sink_x_0</sink_block_id>
+    <source_block_id>blocks_multiply_const_vxx_0</source_block_id>
+    <sink_block_id>uhd_usrp_sink_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_random_pdu_0</source_block_id>
-    <sink_block_id>digital_crc32_async_bb_1</sink_block_id>
+    <source_block_id>blocks_tuntap_pdu_0</source_block_id>
+    <sink_block_id>packet_tx_0</sink_block_id>
     <source_key>pdus</source_key>
     <sink_key>in</sink_key>
   </connection>
   <connection>
-    <source_block_id>blocks_message_strobe_0</source_block_id>
-    <sink_block_id>blocks_random_pdu_0</sink_block_id>
-    <source_key>strobe</source_key>
-    <sink_key>generate</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_map_bb_1_0</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_pdu_to_tagged_stream_0</source_block_id>
-    <sink_block_id>blocks_repack_bits_bb_0_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_repack_bits_bb_0_0</source_block_id>
-    <sink_block_id>digital_map_bb_1_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>blocks_repack_bits_bb_0</source_block_id>
-    <sink_block_id>digital_map_bb_1</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_map_bb_1</source_block_id>
-    <sink_block_id>digital_chunks_to_symbols_xx_0</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
-  </connection>
-  <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0</source_block_id>
-    <sink_block_id>mod_header</sink_block_id>
+    <source_block_id>packet_tx_0</source_block_id>
+    <sink_block_id>blocks_multiply_const_vxx_0</sink_block_id>
     <source_key>0</source_key>
     <sink_key>0</sink_key>
   </connection>
   <connection>
-    <source_block_id>digital_chunks_to_symbols_xx_0_0</source_block_id>
-    <sink_block_id>mod_payload</sink_block_id>
-    <source_key>0</source_key>
-    <sink_key>0</sink_key>
+    <source_block_id>packet_tx_0</source_block_id>
+    <sink_block_id>blocks_message_debug_0</sink_block_id>
+    <source_key>postcrc</source_key>
+    <sink_key>print_pdu</sink_key>
   </connection>
 </flow_graph>



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