Leonard, Phil wrote:

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On a semi-related note, does anyone know what's involved in using a radio to feed a WWV signal to an NTP daemon on a Linux box?

There are some prewritten drivers for WWV reference clocks. Check http://www.eecis.udel.edu/~mills/ntp/html/refclock.html for more info on this.

Do you need a full-blown HAM set to get a good signal, or will any cheap shortwave radio do?