What seems to work for everyone is doing a manual altitude calibration while the GPS is running (meaning that you should press Start in a GPS activity, make sure you have Green Ring (if the 935 uses that to confirm GPS fix) and then go to Settings and do an altimeter calibration while the activity is still running). I have seen different behaviour on saved locations. There may be differences to what I know from the F3, though it seems that several models share the F3 behaviour. I don't know the exact behaviour of the 935.Regarding not calibrated to a known saved location, there may be two issues: So nothing wrong with your experience there. The inaccuracy of GPS altitude measurement is the reason that barometric altimeters are used. The 433' is plenty within normal GPS accuracy. Altitude is still showing 431' on the altimeter, and on 3 IQ widgets I have that show altitude. My elevation displays correctly in the activity data field (470'), but it is not calibrating the altimeter even when the activity is saved. I also have the problem I mentioned to you in another post about my altimeter not calibrating to a known saved elevation during an activity.
I just tried calibrating with GPS and it gave me 433'. I have the 935, but I'm being to think my device is faulty.
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