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When I think of NIST, the first thing I think of is the old National Bureau of Standards (now NIST) WWV Time and Frequency broadcast on 2.5, 5, 10, 15, 20, and sometimes 25 MHz. (You old-timers can probably hear the radio voice already!)

This came to mind because I just read a great PDF with a detailed history and technical description of WWV and its sister stations WWVH and WWVB:


Not directly related to 2FA, of course, but that PDF is recommended reading. These people were hardcore hackers before any of us were born!

The suffix of my amateur radio callsign is WWV. A few decades ago, when I actually talked on the radio, there would always be somebody who would ask me what the time was.

Ironically/coincidentally, nowadays I run several stratum 1 and stratum 2 time servers.

At the tone...

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