[time-nuts] Portable Time Standard

[Joe Hobart]

I need a relatively lightweight, self powered, portable clock accurate to 1
second per month.  Temperatures may range from 10 to 35 C; altitude from 1000 to
7000 feet.  Although expensive, some of the marine quartz chronometers appear to
meet this requirement. ~0.3 PPM.

Does anyone have any experience with these devices?

If so, has anyone tried to detect the probably weak magnetic field generated by
the clock mechanism for time comparison purposes?

Thanks,
Joe, W7LUX

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