[time-nuts] Freq cal to 1ppm without GPSDO

[Hal Murray]

> Thanks to you and the others for your replies. After some more HF reception
> problems here, I have come to the same conclusion as you. I found an Oncore
> M12+ timing GPS is available pretty cheap from Hong Kong, so that's my plan.

Years ago, I remember smiling when I figured out that I could calibrate the 
clock in a scope.  Just trigger on a PPS signal, dial out the delay to about 
1 second, then see where the next PPS signal actually is.  (The scope was off 
about 6 ppm.)




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