Re: [Discuss-gnuradio] Transmitting a file (txt, jpeg or audio) in FM Band

[Juha Vierinen]

On Jan 23, 2008 4:55 PM,  <address@hidden> wrote:
> I have been playing around the USRP and would like to get an Idea how I can 
> transmit an FM signal in the FM Band. For example, I would like to transmit a 
> file (txt, jpeg, audio or anything) using in the FM band 88MHz-108MHz at a 
> specific frequency.
> I have looked at the nbfm_tx.py but it seems like I cannot generate a valid 
> audio-N.dat file that could be transmitted or in other words how can we 
> generate an audio-N.dat file from an .mp3 or .wav file? Also, can any one 
> explain that how we can use the nbfm_tx.py or any other method to transmit 
> something over an frequency in FM band?

Using sox, it is pretty easy to write a mp3 wfm broadcasting system (I
have made one that broadcasts a mp3 playlist).  The others are also
possible, but there are very many ways to transfer images or data over
the air.

> sox file.mp3 -r 32000 -t raw -f -l -c 1 audio.dat

juha