HadleyR

Also have a 64st that started doing the same thing (weak signal, no satellite lock) after just over a year. Garmin support sent a refurbished and it did the same thing after a few weeks. Had a 60csx that worked flawlessly for about 5 years in an intense environment (sport aviation). Something is wrong with the 64st. Will turn off the Glassnos and see if things are stable. UPDATE: turning off Glassnos apparently took care of the problem