Many of the 70's/80's Japanese marine quartz chronometers had a test button that gave you an audible beep every second.
I am not an expert in every quartz clock mechanism BUT a 1-10mH nonshielded inductor makes an excellent pickup for the "ticks" from any quartz clock or watch that I've ever met. Tim N3QE On Fri, Jan 11, 2019 at 3:04 PM Joe Hobart <[email protected]> wrote: > 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 > > --- > This email has been checked for viruses by AVG. > https://www.avg.com > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
