[time-nuts] Re Certified Time Nut Certificate, hp 117A, WWVB

Tom Van Baak tvb at leapsecond.com
Sat Nov 4 20:20:51 EST 2006


> If your 117A, listening to WWVB, draws straight lines
> then something is wrong with it. You should see a change
> between day and night.
> 
> Ah, unless you live near Fort Collins, CO.
> 
> Bill Hawkins

A flat line isn't always good news. There should
be a nice little phase bumps every hour. Do your
117A charts look sort of like the ones below?
http://www.leapsecond.com/museum/hp117a/

See also:
http://tf.nist.gov/general/enc-p.htm#phasesignature

/tvb
http://www.LeapSecond.com





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