Re: [Discuss-gnuradio] Benchmark_tx/rx does not work below 500k bitrate

[Matt Ettus]

udadidd wrote:
> hi 
> I tried setting the bit rate of benchmark_tx/rx below 500k and the receiver
> senses no messages below this rate. Is there any specific reason why is it
> so? I use xcvr2450 boards. and i transmit at 5.1G.


The lower your bitrate, the narrower the signal gets.  The narrower the 
signal, the narrower the filters.  With narrow filters, the frequency 
offsets become a problem.  The best way to handle this would be to add 
some sort of coarse frequency acquisition and tracking, but that is not 
in the code now, only fine tracking.

Matt