how to use GPS unit: the basics of using the gps unit should be covered: on/off, initializing the unit and adjusting settings (datum, coordinate system, measurement units), acquiring a position, checking satellite coverage, marking a position with point averaging, changing the waypoint name, renaming and deleting waypoints, as well as adjusting contrast, light, and time/day. most popular brand gps devices are easy to use,like garmin etc.

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