[time-nuts] synch for pendulum clock....
wa1zms at att.net
Sun Dec 11 22:28:58 EST 2011
As soon as I hit the send icon, I knew I should have been more specific! :-)
How about this.......when I'm in the ham shack and I hear the clock down the
hall (approx. 10mtrs away) chime, I'd like to be able to glance up at the
large LED display at the top of one of the test equipment racks I have and
see that at least the minute's digits read either: 00, 15, 30, or 45. And
FWIW....the LED display is driven by the NMEA data coming out of the GPS RX
inside a Z3810A.
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Jim Lux
Sent: Sunday, December 11, 2011 9:39 PM
To: time-nuts at febo.com
Subject: Re: [time-nuts] synch for pendulum clock....
On 12/11/11 5:53 PM, Brian, WA1ZMS wrote:
> Thanks guys. Got the info I had been looking for. This group is a great
> Only purpose for this project is so that the Westminster clock chimes
> at the same exact moment at the GPS driven UTC LED display in the lab
> shows the quarter hour.
> Why not! :- )
I'm more concerned about your glib statement of "same exact moment"...
we'll have none of this same exact stuff without careful specification of
the reference points, accounting for light time delay, etc.
Now, let's get right to it... on that chime... is it the time when the
hammer hits the bell, or when the peak of the first cycle occurs, or what?
Sounds like a cool idea...
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