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

Bill Hawkins bill at iaxs.net
Sat Nov 4 22:14:41 EST 2006


Tom,

tf.nist.gov doesn't seem to exist.

Bill Hawkins
 

-----Original Message-----
From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
Behalf Of Tom Van Baak
Sent: Saturday, November 04, 2006 7:21 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Re Certified Time Nut Certificate, hp 117A,
WWVB

> 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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