Bob -
I notice that you were associated closely with the GPS system at one time.
Do you know of a source for a GPS clock - that is to say, a clock only,
with a fairly large digital display, preferably 24 hours, settable lo
local or GMT. The GPS positioning function would not be needed.
Application: Hamshack main clock.
I have one of the Heath GC-1000 "Most accurate clock" combination (HF)
WWV / WWVH receiver and clock, which works well, but someday it will
croak. When it does, parts are likely to be hard to obtain, and having
a GPS driven system will eliminate the necessity for an outside HF
antenna (the whip is inadequate up this way).
73
- Jim, KL7CC
Robert Rennard wrote:
Why not just use a cheap GPS receiver instead of a WWVB receiver. It should
work anywhere in the world, and give time keeping accuracy better than 1
microsecond relative to UTC. Most of the time location accuracy is around
10-30 meters, so equivalently the time error at a GPS receiver is 35 to 105
nanoseconds or so relative to GPS time that is maintained to within 100
nanoseconds of UTC. If you want to see the past week's relative error, try
http://tycho.usno.navy.mil/gpstt.html.
The Sprint PCS and Verizon networks, and probably others, are synchronized
to GPS as well, but I have no source for the time keeping accuracy produced
by your connected wireless phone.
Bob Rennard, N7WY
USAF GPS Program Office class of 1978
----- Original Message -----
From: "David A. Belsley" <[EMAIL PROTECTED]>
To: "Elecraft Reflector" <[email protected]>
Sent: Saturday, January 08, 2005 8:03 PM
Subject: [Elecraft] Atomic Clocks and Aluminum Siding
Atomic Clocks are great additions to the shack. But how, pray tell,
does one get them to work inside a house with aluminum siding when you
can't put it next to a window? I believe WWVB is on 80KHz, which is
pretty low. Can one couple them to an antenna?
thanks,
dave belsley, w1euy
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