When did WWV start sending the data on 100 Hz?
I was playing with a WWV simulator the other day, and was surprised to hear
it.
I remember listening to WWV when I was a kid. That was back in the '50s. I
don't remember hearing the 100 Hz blips. Of course, I could have been using
gear that didn't have much of a response at 100 Hz.
Hal,
Your ears are correct; the 100 Hz code began in 1960. See:
http://tf.boulder.nist.gov/general/pdf/1670.pdf
http://tf.boulder.nist.gov/general/pdf/1681.pdf
http://tf.nist.gov/stations/wwvhistory.htm
http://tf.boulder.nist.gov/general/pdf/1731.pdf
/tvb
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