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Standard time and frequency signal

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This is an old revision of this page, as edited by Sangwine (talk | contribs) at 17:05, 19 April 2006 (Added link to NIST TF Division and mention of BBC service.). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

The Standard time and frequency signal service (STFS) is a service available in the United States which provides standard time and frequency signals, broadcast on very precise carrier frequencies by the U.S. Naval Observatory and the National Institute of Standards and Technology (NIST), formerly the National Bureau of Standards (NBS).

A similar service is operated in the United Kingdom by the BBC using the 198kHz carrier of the Radio 4 national radio station with a frequency accuracy of 1 part in 10^11.


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  • NIST Time and Frequency Division [1]
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