Still laughing. Actually I did it aurally. The GPS clock announces the
time on the hour with a series of beeps similar to the old BBC time and the
WWVB clock has an alarm which I can set to sound on the hour. The time
interval is an estimation. Someday I will use a microphone connected to a
storage oscilloscope to figure out what the difference is.
Regards.
Max. K 4 O DS.
Email: m...@maxsmusicplace.com
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----- Original Message -----
From: "Tom Knox" <act...@hotmail.com>
To: "Time-Nuts" <time-nuts@febo.com>
Sent: Thursday, October 03, 2013 1:46 PM
Subject: Re: [time-nuts] A man with two clocks...
It is all a matter of proper placement, now I know you are expecting a
tirade on propagation delay and antenna placement and cable length. But
actually my thought is to place them far enough apart with the WWV clock
in front of your and your GPS at a 12-15 degree angle so it takes 0.2
second to look from one to the other.
Thomas Knox
From: david-tay...@blueyonder.co.uk
To: time-nuts@febo.com
Date: Thu, 3 Oct 2013 19:22:04 +0100
Subject: Re: [time-nuts] A man with two clocks...
Among my time nut toys is a Consumer grade GPS clock and a similar WWVB
clock. The WWVB clock consistently runs about 0.2 seconds ahead of the
GPS
one. I know no one can say why without knowing the particulars of the
two
clock's circuits. Just thought I'd post it for what it's worth.
Regards.
Max. K 4 O DS.
===================================
Max,
I see similar things here. I've always put it down to relatively poor
circuitry in the radio clock, which is why I built my NTP-controlled wall
clock!
http://www.satsignal.eu/raspberry-pi/DigitalClock.html
One radio clock is below. That particular MSF clock is actually not too
bad - visibly it's in sync with the NTP clock (which itself is within a
few
microseconds of GPS time).
73,
David GM8ARV
--
SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-tay...@blueyonder.co.uk
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