[Discuss-gnuradio] Rotating constellations and varying LOs with USRP B210 + Board Mounted GPSDO

[George Sklivanitis]

Hi everyone, 

Has anyone noticed unstable LOs or carrier frequency offsets when using USRP B210s with board mounted GPSDOs?

We have recently been doing field tests using GPS-disciplined oscillators for both USRP B210s and USRP N210 and occasionally both transmitter and receiver flowgraphs lose GPS lock, although clock reference leds in the USRP panel are ON.

Thanks,

George