[Discuss-gnuradio] RFX2400 using 2.4-2.48GHz Patch antennas

[Joseph Crowley]

Joseph Crowley wrote:

Hey,
Just purchased a couple of RFX2400 transceiver dboards as well as a couple of 
patch antennas (WA5JVB) and tried running the benchmark program from one USRP 
to another (both mounted with the RFX boards). However it didn't seem to work. 
I tried looking for a spike using the fft on the receiver USRP but found only a 
spike at 2.4GHz (from surrounding wireless hardware) which didnt change during 
transmission (using benchmark_tx.py). Was just wondering what the problem is if 
anyone else has encountered it. i.e. is it a problem with the boards? Or 
antenna? Or is it a problem with the benchmark script?

    Thanks
    -Joseph Crowley


You'll have to provide more information than that. Which benchmark script and 
what were the parameters? What was the setup of the experiment (TX-RX 
distance)? Have you successfully run other GNU Radio applications? Try 
usrp_siggen and usrp_fft.

Tom

The commands being used are:

./benchmark_tx.py -f 2.4G -T A --tx-amplitude=10000 -s 1000 -r 1 -v -M 5

./benchmark_rx.py -f 2.4G -R A -r 1 -v

used rate of 1 just to set to lowest possible bitrate (for gmsk 35 kb/s)

Distance have ranged between 1 - 2 metres.

When using usrp_fft.py on the receiver the transmitter Rf power is showing on 
the display (pretty large >10db gain from the noise floor).

Problem now is the receiver is not receiving any packets.

Thanks 
Joseph Crowley