[time-nuts] AM Broadcast stations as a frequency reference...
Charles P. Steinmetz
charles_steinmetz at lavabit.com
Fri Oct 14 03:51:49 UTC 2011
Paul wrote:
>Curious if anyone knows of central or eastern US stations that would
>be gps locked.
I believe the following are:
710 WOR New York
810 WGY Schenectady*
860 CJBC Toronto*
880 WCBS New York
960 WELI New Haven
1000 WMVP Chicago*
1030 WBZ Boston
1060 KYW Philadelphia*
1140 WRVA Richmond*
1180 WHAM Rochester
Note that the synthesizer used to generate the carrier from the GPS
source may not have a resolution of exactly 1.000000 Hz, so some of
the GPS-locked stations are off nominal by one or two tenths of a
Hz. The stations with asterisks above are examples. Also, note that
atmospheric effects phase-modulate the skywave path, so expect as
much as +/- 0.5 Hz wander (usually less) on DX carriers at
night. Finally, the stations will not always be running with GPS
discipline (during maintenance, failures, etc.).
Best regards,
Charles
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