> Wireless options are:
> WWVB (Requires low power radio receiver and simple decoding.  Accurate
> to several milliseconds, depending on decoding hardware.  Could be
> accurate to microseconds with better radio and decoding hardware)

If you are going to claim those kinds of accuracies, you have to
compensate for distance from the trasmitter.  Here in Massachusetts I get
the WWVB signal about 11mS late.  Fortunately that's good enough to know
whether I'm late for dinner.


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