Get only noise when trying to receive fm radio stations


#1

I’m having some trouble using gnuradio with the USRP. I went through all
the install steps on Ubuntu 9.04 correctly and set up the USRP with the
BasicRX daughterboard connected to one of the antennas provided. Then I
ran the usrp_wfm_rcv.py example as a test, but when I scan for radio
stations I get an almost constant line with no peaks and the sound is
always static noise. I can’t seem to receive any fm radio stations, does
anyone know what the problem is?


#2

On Sun, May 24, 2009 at 04:26:24PM -0700, no wrote:

I’m having some trouble using gnuradio with the USRP. I went through
all the install steps on Ubuntu 9.04 correctly and set up the USRP
with the BasicRX daughterboard connected to one of the antennas
provided. Then I ran the usrp_wfm_rcv.py example as a test, but when
I scan for radio stations I get an almost constant line with no
peaks and the sound is always static noise. I can’t seem to receive
any fm radio stations, does anyone know what the problem is?

What kind of antenna do you have hooked up to the BasicRx?

Have you tried running

$ usrp_fft.py -d 8 -f 98M

It will show you signals visible in the FM band.

Note that the TVRX is a much better daughterboard to use for this task.

Eric