[time-nuts] WWVB Outages?
Brent Gordon
time-nuts at adobe-labs.com
Fri Dec 26 20:19:21 UTC 2008
Your outage matches what NIST shows:
http://tf.nist.gov/tf-cgi/wwvbgraph_e.cgi?5482602
Brent
Tom Van Baak wrote:
> Greg,
>
> It happens now and then; no big deal. NIST is very good about
> logging these events for us. For recent (and past 7 years) see:
>
> http://tf.nist.gov/stations/wwvboutages.htm
>
> /tvb
>
>
>> 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. When
>> this happens it kills my routine plot of my GPS-disciplined house standard
>> against WWVB (that I use for in-house cross-checking / confidence purposes).
>>
>> I'm using a Kinemetrics Model 60TF WWVB Frequency Comparator / Receiver,
>> that requires a continuous WWVB signal. (This is unlike the consumer "Atomic
>> 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?)
>>
>> Cheers,
>> Greg
>>
>>
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