[time-nuts] NIST

Bob kb8tq kb8tq at n1k.org
Mon Aug 13 09:10:31 EDT 2018


Ok, this is Time Nuts. We probably have a pretty good sample of those who use this and that as a source of time.
We also are reasonably conscious about what we are doing. NIST’s claimed reason for running WWV (and WWVH) is to
distribute accurate time and frequency.

Would / does anybody on the list actually use WWV as their *primary* source of accurate time or accurate frequency?

Ok, so how about as a secondary source of time?

Now show of hands …. third tier backup? 

I’ll place my votes first …. rarely as a third tier backup. Why? It’s just not good enough any more compared to the other 
things I have easily available. 

No, I”m not debating how badly we need third or eight tier backups. The question is purely - what is it actually used for?


> On Aug 13, 2018, at 8:39 AM, jimlux <jimlux at earthlink.net> wrote:
> On 8/12/18 8:40 AM, Craig Kirkpatrick wrote:
>> I agree with Bob that shutting down WWVB would not go over well with the voters but losing WWV and WWVH will mainly be noticed only by HAMs.
> WWV/WWVH also provides HF propagation forecasts, severe weather warnings for mariners, etc., as well as being a propagation beacon.
> I don't think HF communications is completely going away - it's unique in not requiring any infrastructure to achieve world-wide communications other than the two endpoints of the link.
> It's probably a smaller population than radio amateurs, but there are people who work with HF propagation on a day to day basis. For example, if Rocketlabs ever gets their act together and launches a couple more rockets, I'll have a spacecraft in LEO for which I intend to use WWV and WWVH as calibration sources.
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