After 70 minutes of using the other GPSDO, the phase display of Droitwich
has remained in the same place - so subject to phase reading accuracy, that is
a frequency accuracy of a part or two in 10^-11 - much more like it!
In fact, watching over a period of several minutes, its poorer short term
stability can be seen as small phase shifts that reverse back over a few
minutes - although that could also be caused by propagation, perhaps ???
So the VE2ZAZ does need some doctoring and checking out - or