Re: [Discuss-gnuradio] BasicRX boards and AM transmission

[Philip Heron]

Martin Braun wrote:
> RXing with the USRP simply doesn't work, though, neither with usrp_rx_nogui.py 
> nor with anything I could come up with. I get lots more noise than expected 
> and usually I get a very loud buzz or whistle which is a lot louder than the 
> TXed signal. Has anyone else had this problem?

Hi Martin,

Just a quick "me too!". I don't have a USRP yet but I did try using GNU 
Radio to receive AM radio signals with a BT878 chip. With a slightly 
modified am_rcv.py I could hear the station, but it was very weak and 
drowned out by lots of noise. The capture was fine as I was able to get 
good audio (as good as AM can be anyway) with the Dream DRM receiver in 
analogue mode, using GNU Radio to shift the target carrier down to 12kHz.

-Phil