"Mark Amos" <[EMAIL PROTECTED]> wrote: > I appreciate the comments regarding horological obsession. Mine started with > a desire for an accurate master > oscillator for my ham shack (built and use a couple Shera GPSDO's) and has > blossomed into a much broader interest > in time (Ex tempus, sapientia?)
Mine is obviously inherited. Mixed in among all the pictures of me as a baby are pictures of hundreds of pocketwatches (mostly railroad watches) that my dad collected :-). > This has led me to a silly quest. I'd like to use a traditional clock face > and hands as an output device for a > 1PPS signal from my GPSDO. Quartz clock movements with a second hand do exactly what you want. Deliver 1PPS and the second hand goes forward a tick a second. Multiply up to 60Hz and drive a traditional 60Hz AC clock (TVB or someone else illustrates this with test equipment supplies driven from atomic clocks, but this is, let's just say, overkill, but what isn't? :-) ) There are Bulova and other brands of instrumentation clocks that are driven at more than 1PPS for smoother second hand movement. Some of this shows up in the surplus stream. Most used Tuning forks for the original frequency standard. There are various synchronized clock movements out there that show up on the surplus market but they usually have once-per-hour and once-per-day sync pulses, not once-per-second. Tim. _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
