[time-nuts] Time Interval Counter(?) for high-precision watch measurement...

[Burt I. Weiner]

A friend of mine sets watches this way, except that he slips the 
watch into a coil connected to his HP-3586B SLM receiver. This seems 
to work even with metal cased watches.

Burt, K6OQK

At 07:57 AM 9/9/2020, you wrote:
>  The 32768 Hz crystal oscillator can be received, amplified, and 
> filtered outside the watch as described here:
>
>  http://charliethompson.50megs.com/quartz.html
>
>I actually tried this once, and it worked quite well on every watch 
>and clock I could get my hands on at the time.
>
>The first three transistors form an amplifier with around 100 dB of 
>gain. The crystal filter is required to remove the broadband noise 
>generated by the amplifier.
>
>I didn't include the final two transistor "squaring" output stage 
>because I was interested in having a sinusoidal output to view on a scope.
>
>
>
>73.000 de John, KD2BD
>
>
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Burt I. Weiner Associates
Broadcast Technical Services
Glendale, California U.S.A.
biwa at att.net
K6OQK