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GPS week rollover issue
This raises a question with me.Â* I've often heard that Cambridge started
the whole GPS flight logging thing.Â* If that is true, why did FAI come up with a different file structure?Â* If it is true, why not simply use the Cambridge file?Â* Is it not "secure" enough? On 2/10/2019 7:34 AM, kinsell wrote: On 2/9/19 9:31 AM, JS wrote: On Saturday, February 9, 2019 at 7:45:06 AM UTC-8, Tim Newport-Peace wrote: At 03:16 09 February 2019, kinsell wrote: On 2/6/19 7:57 PM, Bruce Hoult wrote: On Wednesday, February 6, 2019 at 9:00:44 AM UTC-8, Jonathan Foster wrote: I just came across this interesting page: https://www.orolia.com/resources/blo...gps-2019-week- rollover-what-you-need-know On April 6th of this year the GPS week will roll over and on some older instruments it could mess up the date. How many of our soaring instruments might have this problem? I'm guessing that will be the final end of my 1994 Cambridge Model 10. (It's already had the battery replaced, of course) I've got a 1996 era Garmin backpacker gps still holding the correct date.Â* Internal battery was replaced under warranty about 22 years ago. I'd be surprised if it suddenly got the wrong date on April 6, but really doesn't matter anyway.Â* Lots of old Volksloggers got hit with the date problem, maybe they'd be more subject to failure if any of them are still in use. Most of the Volksloggers were made with the Garmin GPS25 Engine, same as legacy Cambridge. One rollover problem the Volkslogger doesn't have is due to the robust chassis. It makes a good wheel chock. Jim At least the Volksloggers put out actual IGC files.Â* The Models 10, 20, and 25 should have been relegated to wheel chock duty long before the Volksloggers. -- Dan, 5J |
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