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A comment on NIST is broadcasting a test signal on minute 8 of the hour on WWV and 48 on WWVH. Parent comment

Re:NIST is broadcasting a test signal on minute 8 of the hou... by NobodyNada on Thursday December 02, 2021 @03:32AM (#29413799)
That's the whole point: https://en.wikipedia.org/wiki/WWV_(radio_station)#Broadcast_...

The "clicks" are second markers, and the low-frequency hum that follows each click encodes a single bit of a binary datastream conveying the current time. If you've ever had an automatic clock in the US, it sets the time by tuning in to WWV and decoding this signal.

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Re:NIST is broadcasting a test signal on minute 8 of the hou... by sciurus on Thursday December 02, 2021 @08:09AM (#29415625)
I think most automatic clocks are setting themselves based on WWVB, not WWV.

It broadcasts on longwave rather than shortwave and uses a different modulation.

https://www.nist.gov/pml/time-and-frequency-division/time-di...

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