I stand corrected. After reviewing stuff, I see the signal IS available for most of NA all day long. However, near the east coast it is weaker and apparently there is a competing signal from UK (MSF) on the same frequency, so in the NE USA it's only reliable at night. Apparently, most of the so-called atomic clocks only look for the signal at night, probably for that reason.?
as far as accuracy, the original accurate sync no longer works since 2012, but a phase shift was introduced then and receivers designed for that can get extremely time syncs. I have no idea where you can get those receivers though. Using that, and compensating for the propagation delay, supposedly it is accurate to 10^-12 sec.?
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73, Dan? NM3A
