Use "Satellite Lock" before you head out. This is mainly beneficial whilst trekking. In the parking zone, locate your GPS's satellite tv for pc lock placing and feature it get to work -- it usually takes numerous mins.
Signs that you have a terrible signal are changing directions, jittery locations, or error messages.
Know that GPS's are not replacements for maps and compasses. Because a GPS can run out of battery, lose sign, or break, you have to by no means rely upon it completely to get around. While useful, you want to be prepared if you can't use it for some reason.
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