[time-nuts] GPS outage?

Lisa Perdue perdue.lisa at gmail.com
Fri Sep 6 15:54:04 UTC 2013


Trimble has confirmed to us that the nonstandard outage on PRN 4 (SVN 34)
may have caused the Resolution-T receivers to perform a reset and then
return to normal operation. They are investigating the cause but it does
explain why only some people experienced the event. Other Trimble receivers
and other manufacturers seem unaffected.


On Thu, Sep 5, 2013 at 10:34 PM, Brian, WA1ZMS <wa1zms at att.net> wrote:

> Guys-
>
> Please forgive me for the BW......
>
> My day-job mgmt. has also asked me today if I knew of any US regional GPS
> "issues", as we too have had several reports of
> our customers systems going into Rb hold-over on or about the 4th of Sept.
> Only fact I can find is that SVN 4 was noted as
> an issue via: http://adn.agi.com/SatelliteOutageCalendar/SOFCalendar.aspx
> But that can't be the root cause.
>
> At work, I am now the "go-to-guy" for ANYTHING GPS related since I'm a
> Time-Nut and we have customers who depend on
> GPS timing for their  comm. systems;  and for reasons I cannot go into here
> on this reflector.
>
> So like Brad.....I too have anecdotal reports of issues.  The sky is not
> falling, nor was it a serious issue.
> However if anyone has info that they cannot share via the reflector, a
> private reply would be much appreciated.
> I am not looking for info that cannot be openly shared. But if anyone has
> hint or clue, I would much appreciate it.
>
> BTW....my GPS receivers here in VA seemed to have had no issue. Go figure.
>
> -Brian, WA1ZMS
>
>
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Brad Dye
> Sent: Wednesday, September 04, 2013 6:14 PM
> To: Time Nuts
> Subject: [time-nuts] GPS outage?
>
> Readers of my newsletter are reporting a strange interruption of their GPS
> reception yesterday -- mainly in the northeastern US but also in SC. This
> is
> my first day on this mailing list -- for a while -- so I don't know if this
> has been discussed or reported previously. Has anyone else noticed this? We
> are trying to find out is there was some sort of system-wide issue or maybe
> if it was local interference possibly caused by those GPS jammers that some
> of the truckers have been using.
>
> By the way, my newsletter is mostly about Paging, and we use GPS/DOs to
> keep
> the paging transmitters (in simulcast mode) synchronized and on frequency.
>
> Best regards,
>
> Brad Dye, K9IQY
> Editor, Wireless Messaging News
> P.O. Box 266
> Fairfield, IL  62837 USA
> Telephone: 618-599-7869
> Skype: braddye
> http://www.braddye.com
>
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