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Widely Separated Clocks with Microsecond Synchronization and Independent Distribution Systems

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2 Author(s)
Davis, T.L. ; National Bureau of Standards, Boulder, Colo. ; Doherty, R.H.

In a majority of timing applications, a problem exists in setting two or more clocks to agree with one another. Present techniques using WWV or other HF broadcasts allow clocks to be synchronized within 1 msec. This paper describes a method which offers an improvement in synchronization of three orders of magnitude. Microsecond synchronization is obtained by use of the Loran-C navigation system as the link between a master clock at Boulder, Colorado and any slaved clock anywhere in the Loran-C service area. The timing system also includes a unique method for distribution of several time code formats on a single UHF channel.

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Space Electronics and Telemetry, IRE Transactions on  (Volume:SET-6 ,  Issue: 3-4 )