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6400 external GPSDO?

N7CXI Member ✭✭
I'm considering a 6400, and am curious if the clock can be driven with an external GPSDO. I have one and a distribution amp that drives my test bench and two other rigs in the ham shack. 

My uses for the rig wouldn't explicitly require a GPSDO, but since I have other rigs already ticking away... 



  • Tim - W4TME
    Tim - W4TME Administrator, FlexRadio Employee admin
    edited December 2017
    Yes, there is a 10 MHz reference clock input on the FLEX-6400.  Requires a 1.0v p-p minimum to 3.3v p-p maximum (4dBm min - +15dBm max), sine or square wave signal.
  • N7CXI
    N7CXI Member ✭✭
    edited August 2018
    Thanks, Tim.

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