[time-nuts] WWVB Outages?
gbusg at comcast.net
Fri Dec 26 20:08:18 UTC 2008
If it's not too much trouble, could you temporarily disconnect antenna,
confirm the alarm, then reconnect antenna to see if the alarm remains
latched or goes away.
In my case, the Kinemetrics 60TF's "Unlock" alarm is *not* latching.
Therefore you have to be there, to catch the problem "in the act". ...Or
else run continuous plots.
----- Original Message -----
From: "John Ackermann N8UR" <jra at febo.com>
To: "Discussion of precise time and frequency measurement"
<time-nuts at febo.com>
Sent: Friday, December 26, 2008 1:02 PM
Subject: Re: [time-nuts] WWVB Outages?
I don't see any alarm LEDs on my Spectracom WWVB receivers (one a
WWVB-DO, the other a clock), but I'm not sure that their "unlock" LEDs
latch, or that the "error" LEDs trip on loss of lock.
Greg Burnett said the following on 12/26/2008 02:50 PM:
> Have any of you noticed intermittent WWVB outages lately?
> I've been having that problem, every once in a while, the past month or
> more. For example, here in Colorado Springs, the 60 kHz signal disappeared
> sometime this morning before 11:42AM MST, and returned at 12:28PM MST.
> this happens it kills my routine plot of my GPS-disciplined house standard
> against WWVB (that I use for in-house cross-checking / confidence
> I'm using a Kinemetrics Model 60TF WWVB Frequency Comparator / Receiver,
> that requires a continuous WWVB signal. (This is unlike the consumer
> Clocks" that the public use; those kinds of WWVB-locked clocks do *not*
> require a continuous on-air signal, but rather "flywheel" in between
> scheduled locks a few times per day, as I understand it?)
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