[time-nuts] Heathkit clock available
hmurray at megapathdsl.net
Fri Aug 12 22:41:49 EDT 2016
bill.iaxs at pobox.com said:
> Different regions can have different phase behavior. I have only seen West
> Coast plots on this list. When I did some work with this in Minnesota in the
> eighties, the phase variation was only about 6 seconds during a day and zero
> from day to day.
On the west coast, the "zero from day to day" part is optimistic.
I agree that they generally do a good job, but there are times when they
shift by more than 1 second per day, averaged over a month.
Here is an example:
There is an interesting question. If you keep time by counting cycles, how
do you get started? I assume there is an official cycle counting clock deep
in a control center. Is there a backup? What do they do when the control
center loses power? ...
These are my opinions. I hate spam.
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