[Discuss-gnuradio] Problems when receiving after transmit

[Dan Halperin]

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Just-powered on USRP rev 4.2 with RFX2400 rev 2-6-2006. Current SVN.

usrp_rx_cfile.py -f 2.485G -d 8 -s pre.dat
usrp_siggen.py -i 16 -f 2.485G
usrp_rx_cfile.py -f 2.485G -d 8 -s post.dat

In the first set of data, the noise level is what I'd expect and
everything works hunky-dory. After the siggen, however, it all goes
haywire, the noise floor becomes huge even though an adjacent USRP sees
nothing. See
<http://www.cs.washington.edu/homes/dhalperi/random/pre_and_post.jpg>
for graphs of the raw sample amplitudes.

Can anyone duplicate / explain this? Thanks!

- -Dan
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