[Elecraft] Atomic Clocks and Aluminum Siding

[Jim Wiley]

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" <belsley at bc.edu>
>To: "Elecraft Reflector" <elecraft at mailman.qth.net>
>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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