Just for another data point. I have a new LaCrosse digital clock that uses the 60kHz WWVB signal to keep time. It is the model WT-8005U-B, shown here. http://www.lacrossetechnology.com/8005b/index.php It has at least three times in the last two months jumped time. Twice by an hour and once by 6 hours. It corrects after midnight.

Not very reliable if you ask me.

Regards,
Tom




----- Original Message ----- From: "paul swed" <[email protected]> To: "Discussion of precise time and frequency measurement" <[email protected]>
Sent: Friday, February 22, 2013 6:01 PM
Subject: Re: [time-nuts] WWVB


Donald from what I have been seeing they are consistent. But there is a 1
hour period up around 1 or 2 pm est that they go back to the old modulation
and that allows time clocks to lock. At least thats what the spectracom
8170 does. Then it says its locked for a very long time even though it
isn't.
Regards
Paul
WB8TSL

On Fri, Feb 22, 2013 at 3:35 PM, Donald Henderickx
<[email protected]>wrote:

Is wwvb consistent in the testing of there modulation scheme?I find that
My Spectracom 8182  will stay in time sync for several days,and then loose
it for five or six hours. Is any one else experiencing this?
I am thinking of trying my kinemetrics/truetime 60-TF to see if it might
function.
Don Henderickx
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