Re: [Discuss-gnuradio] Signal drought

[Greg Hulands]

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

On May 5, 2014, at 5:03 PM, Greg Hulands <address@hidden> wrote:

> It just looks like noise.
> 
> On May 5, 2014, at 4:59 PM, Marcus D. Leech <address@hidden> 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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