I'm trying to run a transceiver script for OFDM, which has both the tx and rx flowgraphs (very similar to tunnel.py except the TUN interface). But, I can't seem to receive anything successfully in that case. Even the preamble correlation fails, it barely sees anything substantial in the air at the RF end.
On the other hand, if I just disable the uhd_transmitter in the script, the receiver then works just about great.
I've run the transceiver script earlier on USRP2 with the eth driver - could it be something to do with the UHD? Is it possible that the transmitter is in some way locking the receiver?