Wrongly altitude

Are you doing the altitude calibration at the start of activity, or do you have everything set to automatic?

Do you mean the altitude itself or the altitude difference during activity?

I got no other values at my known tracks than before, but the numbers of the difference are much higher (as triple as much), the reason of this being that the difference is now shown in feet even in the elevation profile of an activity when the elevation itself is show in meters as per system setting. That being highly confusing since in the elevation profile of an activity the difference is shown w/o units so you have to guess why the number is as triple as high.

C.sco said:

Are you doing the altitude calibration at the start of activity, or do you have everything set to automatic?

Very important question when altitude is of concern. Manually still seems to be the more reliable method.

Also: How do you calibrate your altutude if you do it manually? DEM is the method of choice here, to be performed on a more or less even palin of at least 10x10 meters (0,6x0,6m if you live in Switzerland though, they have their maps rendered that exact) and of course outside of an elevated structure. Otherwise DEM can't perform right. GPS is never the method of choice b/o that would be less exact by design.

If you are interested in more deatils about calb methods, see here, where you also find explanations about why it is probably better to calibrate manually.:

forums.garmin.com/.../f7-9-33-elevation-problem