I changed antenna’s and I see a signal now in uhd_fft. I just noticed that when
in GRC and I run the flow graph, i don’t see the RX light come on the board
like when running uhd_fft.
I have put the grc file up here http://test.utr-software.com/sdr/test.grc
Thanks,
Greg
The default antenna port if you don't specify one is always TX/RX --
because you might be wanting to do half-duplex. You can explicitly specify
the RX2 antenna port in the GRC source block, or just remember that
"unspecified" means, typically, TX/RX.
On May 5, 2014, at 5:03 PM, Greg Hulands<ghula...@me.com> wrote:
It just looks like noise.
On May 5, 2014, at 4:59 PM, Marcus D. Leech<mle...@ripnet.com> wrote:
On 05/05/2014 07:52 PM, Greg Hulands wrote:
Hi,
I built all the code today using the build-gnuradio script and when I create a
simple GRC flow graph going from the USRP source to the waterfall plot, I get
no data coming in. I then built gqrx and ran it and it too doesn’t get any data
in from the device to display on its waterfall. I ran the rx_samples_to_file
example and captured some data, but when looking at it in a hex editor, it
doesn’t look like it captured anything in particular
(http://test.utr-software.com/sdr/rxdump.dat). I ran it with
./rx_samples_to_file —freq=107700000 —rate=1000000 —file=~/rxdump.dat.
I am new to gnu radio and sdr so I’m not yet sure how to dig in to debug these
issues.
Anything help is greatly appreciated.
Thanks,
Greg
How about something really, really simple:
uhd_fft -a type=b200 -f 107.7e6 -s 1.0e6 -g 40 --fft-rate 8 --averaging
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
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Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
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