Re[Discuss-gnuradio] To listen FM radio station using GRC in GNU Radio

[Richard Jaeger]

On Sat, Mar 29, 2008 at 08:04:27PM +0500, zafar ali wrote:

Hi Every one !

First,

Thanking  all those who replied on my queries

I have two USRP boards and daughter boards RFX900 and RFX2400.

I want to listen FM radio station .

Kindly help me if someone has tried before or please give suggestion.

I use the Basic RX board to listen to FM stations with the FM receiver example program

(usrp_wfm_rcv.py).

According to the BasicRX description, the board transformer couples the signals right into the buffer

amplifier ahead of the ADC.   The buffer amplifier bandwidth is wide enough to pass the FM band

with some possible attenuation at the high end.  With an external antenna I can easily copy many of  the FM stations

in our area.

Since the system will be subsampling at 64 MSPS, aliasing will occur.  For example, one of the stations I

listen to is at 96.7 MHz which is 32.7 MHz above 64 MHz.  One alias then appears at

128-32.7 = 95.3 MHz.  I'm in a rural area, where we don't have a large number of stations, so the aliasing

doesn't cause me an interference problem.

Dick...