[Discuss-gnuradio] High packet error and reception problems with RFX 2400

[Syed Faisal Shah]

Hi fellows,

We just purchased USRP from Ettus equipped with daughter board RFX
2400. We are trying to test these boards and have following problems:

1. The benchmark_tx.py and benchmark_rx.py from the GNU radio tar ball
3.0.3 gave close to 100% packet error. During the experiment, we used
the maximum gain for receiver antenna and maximum amplitude for
transmitter.  We are transmitting wirelessly using different
settings of center frequency from 2400 to 2475MHz and bit rate of 50k
to 500kbps. We are using vertical antenna from Ettus for this band. We
varied the distance between the tx and rx from few centimeters to 1m.
At 1m, the receiver was unable to receive/decode any of the packets at
at all. Similarly at low bit rates, the rx wan unable to receive/decode
any of the packets. We appreciate any help or clue to this problem.

2. We tried to use usrp_siggen.py and usrp_oscope.py programs to
transmit/receive a sinusoidal signal. The oscilloscope program did show
a sinusoid wave but the amplitude is weak and noisy. Even the response
to the orientation and distance of the transmitter is random. For some
orientation of the transmitter the received signal gets better for a
moment and then goes down again. 

Have anyone experienced this issue with RFX daughter board and vertical antenna? Any help will be highly appreciated.

Regards

SFAS