[time-nuts] G3RUH GPS Stabilized Oscillator

[Richard W. Solomon]

I built two of the GPS Stabilized Oscillator circuits (G3RUH as
modified by N1JEZ). They seem to work, except that I still have
not been able to confirm that the 10 MHz XO (FOX) is truly locked
up to the GPS signal. I can verify that the GPS Engine is locked,
but I still cannot prove to myself that the XO is locked.

I made one up to lock up a 1 GHz PLO that I can use for calibration
of my Service Monitor and the other to use as external references to
a couple of EIP counters.

Any thoughts or suggestions (other than using the services of NIST !!). 

73, Dick, W1KSZ