[USRP-users] B2X0 transmit quality degraded with UHD 3.12.0

[Ron Economos via USRP-users]

I had previously noted that the B210 TX power had increased by about 5 dB going from UHD 3.11.1.0 to UHD 3.12.0. Today, I was doing some two tone IMD testing and noticed that the IMD performance has degraded *severely* from UHD 3.11.1.0 to UHD 3.12.0.

UHD 3.11.0.1

3.11.0.1 IMD

UHD 3.12.0

UHD 3.12.0 IMD

Ron

Here are the spectrum analyzer plots at roughly the same power level. The 3rd order two tone IMD level changes from almost -50 dB in 3.11.0.1 to a hideous -20 dB with 3.12.0. Something is terribly wrong.

twotone.grc
Description: application/gnuradio-grc

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