[time-nuts] GPS Outage..

Bob Camp kb8tq at n1k.org
Fri Feb 26 17:56:59 EST 2016


Hi

….. ummm ….. errr …..

Cell phones since they first came out have *never ever* been setup to run on anything other than GPS. Retrofitting them to use something else would take a decade or more. We didn’t “destroy the backup”, there never was one. Pretty much all of our surplus gizmos are cell tower surplus (like 99.99%). 

Bob

> On Feb 26, 2016, at 11:57 AM, Burt I. Weiner <biwa at att.net> wrote:
> 
> Maybe I'm misreading what you're saying, but no matter the cause, it points out what can and does happen when you put all the mission critical eggs in one basket.  That we don't have as reliable as possible a backup system, or why we destroyed the one we had, is mind boggling.  This is a perfect example of what happens when you have people who don't understand the problem/s making the wrong final decisions in spite of having been warned.
> 
> It is my belief that if we are to be so reliant on these systems for so many things, we need to have a functioning backup system in place.
> 
> Burt, K6OQK
> 
> 
> 
>> Mark Sims wrote:
>> >> When is some organization going to explain what happened in February for almost two hours starting at 00:16 GMT?  That subject has gone silent.  Rob, NC0B
>> > I heard back from NAVCEN.  They said it was a Trimble issue and that Trimble would contact me (they didn't).   But that does not jive with reports of failures in Motorola, Navman, etc receivers.
>> 
>> I think we need to distinguish here.
>> 
>> The January 26 issue was due to faulty data sent by the satellites,
>> which caused GPS receivers to apply a wrong UTC correction which caused
>> the UTC time to be off by 13.7 us.
>> 
>> As explained by Luc Gaudin from http://naelcom.com (who obviously sell
>> Trimble GPS receivers) the February 13 issue was indeed just a Trimble
>> firmware problem. See:
>> https://www.febo.com/pipermail/time-nuts/2016-February/096042.html
>> https://www.febo.com/pipermail/time-nuts/2016-February/096050.html
>> 
>> Martin
> 
> Burt I. Weiner Associates
> Broadcast Technical Services
> Glendale, California  U.S.A.
> biwa at att.net
> www.biwa.cc
> K6OQK 
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