Hi,
I am not sure if others like Syed Shah may be having the same problem, but I
notice similar symptoms as he has with my new RFX2400s I got just last
month.
With a spectrum analyser, I notice that with just switching on the RFX2400,
there is continuous radiation from the radio at frequencies I have set
before on the radio. The signals are measured at about -70dB to -75dB
approximately 20-30cm from the transceiver antenna, regardless whether GNU
Radio (GR) software or the PCs are turned on. The noise floor is -80dB.
Later, when the IP tunneling example is run without MAC, the signal at the
frequency selected for the example, 2.44GHz, goes to noise floor level.
However, once the ping application starts periodic transmissions, the RF
radiation at 2.44GHz rises to about -72dB and remains there continuously,
even after ping or GR are turned off. Not surprisingly, no ping packet gets
through.
This does not happen with the RFX400s I have used. The software is the same
in both cases except for the frequency setting.
I am using GNU Radio 2.8 as I had problems building GR3.0.x. In any case, my
application works with GR2.8 and the RFX400.
Thanks,
Jeremy
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