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weird spectrum

From: Jay Patel
Subject: weird spectrum
Date: Thu, 11 Feb 2021 19:21:27 -0400
Hi all,

I am trying to create an OFDM transmitter using GNU Radio Companion and an Analog Devices ADALM-Pluto SDR (attached my *grc file). It looks like I am missing the positive side of the spectrum. When I visualize my spectrum, it only has a negative side, I am expecting both sides of the spectrum (something like attached).

What am I missing?

Thanks.

Attachment: ExpectedOutput.png
Description: PNG image

Attachment: QTWaterFall.png
Description: PNG image

Attachment: QTOutput.png
Description: PNG image

Attachment: PlutoOFDMGNURadio.pdf
Description: Adobe PDF document

Attachment: PlutoOFDMGNURadio.grc
Description: application/gnuradio-grc

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