[time-nuts] Synchronizing to WWV

paul swed paulswedb at gmail.com
Sun Dec 20 17:41:38 UTC 2009


Boy I think wwv has been doing that for 30 years+. I remember trying to
decode it with discreet chips ages ago.
It was a mess due to propagation and noise. I have seen programs that will
indeed decode it using the sound blaster you have to luv the SB cards.

On Sun, Dec 20, 2009 at 7:34 AM, Tom Van Baak <tvb at leapsecond.com> wrote:

> 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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