Getting NMEA data out from gpsd for use in u-center

[David Taylor]

The aim is to get u-blox u-centre watching the NMEA output from a gps device. 
The gps is connected to a Raspberry Pi and running the latest gpsd correctly. 
I've searched for answers but they elude me.  Using Telnet on the Pi itself 
produces a JSON header line

Questions:

1.  My understanding is that gpsd can output data on TCP/2947, however when 
trying to connect to a the RPi from the PC I get:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
C:\Users\David>telnet raspi-25
(standard login/password prompt, can connect OK)

C:\Users\David>telnet raspi-25 2947
Connecting To raspi-25...Could not open connection to the host, on port 2947: 
Connect failed
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

but connecting from the RPi itself gives a JSON text line


2. There is mention of JSON coming from port 2947.  Is there a way of getting 
NMEA rather than JSON, or some program/function to send continuous NMEA on 
another port?

3. I see that once the JSON line arrives, nothing else does.  Ideally I would 
just like a copy of the NMEA stream the GPS is sending to gpsd.

Thanks,
David
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