Re: [Discuss-gnuradio] Signal drought

[Marcus D. Leech]

> It just looks like noise.
Well, "noise" isn't the same as "no signal at all".

Do you *expect* there to a signal at 107.7MHz?  Do you have an antenna 
plugged in to the correct port on the device?


> 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
> >
> >
> > _______________________________________________
> > Discuss-gnuradio mailing list
> > address@hidden
> > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio


--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org