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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Old Garmin GPS device
From: Peter Monta
Date: 2019 Jul 28, 20:33 -0700
From: Peter Monta
Date: 2019 Jul 28, 20:33 -0700
... a clear view of the sky for three minutes
That could be the problem. Try letting it view the sky for 30 minutes so as to pick up at least two copies of the UTC-to-GPS offset, that is, the sum-of-leapseconds. Perhaps the receiver should not be claiming to know UTC until it has a fresh copy of this data, although I imagine for practical reasons it does so anyway from the last known-good almanac. If after 30 minutes the time is still wrong, try a power cycle (a soft power-cycle, without removing the batteries). If it's still wrong, then indeed there's a firmware bug.
Cheers,
Peter
