We just purchased USRP from Ettus equipped with daughter board RFX 2400.
are trying to test these boards and have following problems:
The benchmark_tx.py and benchmark_rx.py from the GNU radio tar ball
3.0.3gave close to 100% packet error. During the experiment, we used
gain for receiver antenna and maximum amplitude for transmitter. We are
transmitting wirelessly using different settings of center frequency
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
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,
rx wan unable to receive/decode any of the packets. We appreciate any
or clue to this problem.
We tried to use usrp_siggen.py and usrp_oscope.py programs to
transmit/receive a sinusoidal signal. The oscilloscope program did show
sinusoid wave but the amplitude is weak and noisy. Even the response to
orientation and distance of the transmitter is random. For some
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.