[time-nuts] GPS disciplined mechanical clocks

Jim Palfreyman jim77742 at gmail.com
Thu Mar 5 06:22:03 UTC 2009

So if I set my GPS locked 3325B to 1Hz (sine wave) and put that into my M&K
subwoofer and sat that next to my pendulum clock (with its ~1m long Reifler
pendulum) it should keep perfect time.


2009/3/5 Tom Van Baak <tvb at leapsecond.com>

> > mechanical, more of a hybrid, but I don't know how you'd discipline a
> > mechanical clock with a system that had to drive in parallel with the
> escape
> > mechanism, the two would fight each other.
> Eric,
> Precision pendulum clocks, when mounted near each other,
> have been known to eventually get into phase lock. So one
> idea is to add a GPS 1PPS driven bass speaker or solenoid
> or some sort of thumping contraption. Perhaps eventually the
> pendulum clock would lock to the vibrations on the the wall.
> /tvb
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