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Re: GPS Rollover

PostPosted:Sun Apr 07, 2019 1:15 pm
by matthew_w100
Paul_Sengupta wrote:


Jeepers. There's a fine example of 6.5 minutes of video which should be 60 seconds of text.

Re: GPS Rollover

PostPosted:Sun Apr 07, 2019 2:15 pm
by neilmurg
@matthew_w100 and you repeated it...

Re: GPS Rollover

PostPosted:Mon Apr 08, 2019 11:47 am
by Colonel Panic
My beloved Garmin Pilot III is showing "10:46:28 LCL, and 23-AUG-99" - the time is correct (UTC) but presumably it has not rolled over re: date. Does anyone know if this can be remedied?

Re: GPS Rollover

PostPosted:Mon Apr 08, 2019 4:07 pm
by Sooty25
Colonel Panic wrote:My beloved Garmin Pilot III is showing "10:46:28 LCL, and 23-AUG-99" - the time is correct (UTC) but presumably it has not rolled over re: date. Does anyone know if this can be remedied?


do you know what software version is in it? V2.07 was the very latest.

Re: GPS Rollover

PostPosted:Mon Apr 08, 2019 4:12 pm
by PeteSpencer
Trent772 wrote:S and have to be selected to internal time for the month.

:mrgreen:


Ah menstrual clocks. :shock:

Peter

Re: GPS Rollover

PostPosted:Mon Apr 08, 2019 4:18 pm
by johnm
Colonel Panic wrote:My beloved Garmin Pilot III is showing "10:46:28 LCL, and 23-AUG-99" - the time is correct (UTC) but presumably it has not rolled over re: date. Does anyone know if this can be remedied?


I've got one of those in a box in the attic but it hasn't been switched on in at least 5 years....

Re: GPS Rollover

PostPosted:Mon Apr 08, 2019 4:31 pm
by Sooty25
johnm wrote:
Colonel Panic wrote:My beloved Garmin Pilot III is showing "10:46:28 LCL, and 23-AUG-99" - the time is correct (UTC) but presumably it has not rolled over re: date. Does anyone know if this can be remedied?


I've got one of those in a box in the attic but it hasn't been switched on in at least 5 years....


Safe to say the internal battery is "cream crackered" by now! Might work as a paperweight?

Re: GPS Rollover

PostPosted:Mon Apr 08, 2019 5:19 pm
by Colonel Panic
Sooty25 wrote:
Colonel Panic wrote:My beloved Garmin Pilot III is showing "10:46:28 LCL, and 23-AUG-99" - the time is correct (UTC) but presumably it has not rolled over re: date. Does anyone know if this can be remedied?

do you know what software version is in it? V2.07 was the very latest.

v2.06
Atlantic Intl Aviation Database / Cycle 0211 Effective 31-OCT-02 to 28-NOV-02
International Land Data v1.01


It all seems to be working fine, and latches on to several satellites so it would be a great shame not to keep it in a working condition.

Re: GPS Rollover

PostPosted:Mon Apr 08, 2019 8:21 pm
by patowalker
Mine is also showing the date as 23 Aug 99, Software version 2.13, Cycle 0701, 18 Jan 2007 to 15 Feb 2007, Atlantic Highway 1.0, Memory battery low, Stored data lost.

Finds satellites quickly and works!

Re: GPS Rollover

PostPosted:Tue Apr 09, 2019 2:01 am
by Paul_Sengupta
Sooty25 wrote:2.07 was the very latest.

patowalker wrote:Mine is .. showing .. Software version 2.13


:?: :D

Re: GPS Rollover

PostPosted:Tue Apr 09, 2019 2:44 am
by T67M
Colonel Panic wrote:My beloved Garmin Pilot III is showing "10:46:28 LCL, and 23-AUG-99" - the time is correct (UTC) but presumably it has not rolled over re: date. Does anyone know if this can be remedied?


I don't have a GPS III to test this on, but one of the discussion groups I monitor for timing experts recently had the following post:

I dug out my old Garmin GPS-III's (mid 1990's vintage !). The internal backup batteries had completely died after many years of non-use, so it took a while for them to find the satellites, but when they did, they, of course, came up with an August 1999 date. A quick "Google" found that someone is hosting a zipped Windows executable (apparently originally from Garmin) that you run when the satnav is connected to your PC via a serial cable, and it corrects whatever internally so that the date is reported correctly. Works like an absolute charm! The program doesn't say it is specifically for the GPS-III, so it might be using a standard (undocumented, of course!) message that will work on a whole bunch of receivers. Might be worth giving it a try? See:

https://sites.google.com/site/gnbaddele ... ftware.zip


I have no way of validating the software linked to, so please be careful, but it might just be useful.

Another post in the same group noted that the clock is actually 1024 weeks and 4 seconds out due to the leap seconds which have occurred between August 1999 (the last rollover) and today. Again, I have no way to validate this claim, and I believe there have been five leap seconds hence there is some doubt as to the validity of the claim.

Re: GPS Rollover

PostPosted:Tue Apr 09, 2019 7:10 am
by Sooty25
patowalker wrote:Mine is also showing the date as 23 Aug 99, Software version 2.13, Cycle 0701, 18 Jan 2007 to 15 Feb 2007, Atlantic Highway 1.0, Memory battery low, Stored data lost.

Finds satellites quickly and works!


Oh! Garmin website only shows v2.07! Oh well, that's that theory busted! :lol:

Like johm's unit, I'd suggest paperweight!

Re: GPS Rollover

PostPosted:Tue Apr 09, 2019 7:49 am
by patowalker
You can download version 2.12 here https://www8.garmin.com/support/collection.jsp?product=010-00125-00

Mine went back to Garmin for something to be fixed and came back looking like new, with software version 2.13. All free of charge. :)

Re: GPS Rollover

PostPosted:Tue Apr 09, 2019 8:27 am
by MikeW
There were two (at least) versions of the Pilot III and the early ones will not accept the software revisions above 2.07 AIUI.

Re: GPS Rollover

PostPosted:Tue Apr 09, 2019 8:31 am
by Colonel Panic
Thanks all; does anyone have a suitable cable that I could borrow for a week or two? I'd pay for postage both ways. Very preferably one with a USB plug on one end, but if I can only find one with a serial port I will try to find a friend with a suitable Windows computer. (I only have Macs.)

Or maybe I could post my Pilot III to you if you have access to everything else? A couple of beer tokens would be included 8)