[time-nuts] GPS Outage..

Alex Pummer alex at pcscons.com
Fri Feb 26 18:36:05 EST 2016


Hi Burt,
you are more than right, but don't forget the bean counters! they have 
power over everything even logical thinking.
73
KJ6UHN
Alex

On 2/26/2016 8:57 AM, Burt I. Weiner 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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