[Elecraft] Atomic Clocks and Aluminum Siding

[Charles Greene]

Bob,

The "cheapest" GPS receiver I ever bought costs $100 compared to the > $25 
for the WWV clock.  That was a couple of years ago, and the cost of both 
has come down.  That's the why.

Chas

At 12:34 AM 1/9/2005, 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