nanog mailing list archives

Re: WWV Broadcast Outages


From: "Majdi S. Abbas" <msa () latt net>
Date: Tue, 21 Feb 2017 11:45:04 -0500

On Tue, Feb 21, 2017 at 11:21:09AM -0500, Sean Donelan wrote:
If any network operators still use WWV for time synchronization.

        I wouldn't expect this to cause any serious synchonization
problem; anyone using HF for time has to have the ability to hold
over for a miniumum of several hours anyway due to the vagaries of
normal shortwave propagation.  (Even 24-48 hour disruptions aren't
uncommon after a large solar event.)

        That said, I and many others "still use" WWV -- there aren't
exactly a surplus of suitable backup methods to GPS these days.

        But if anyone needs it, consider using the fine HF time
service provided by our friendly neighbors to the north:

        http://www.nrc-cnrc.gc.ca/eng/services/time/short_wave.html

        --msa


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