Quoted By:
>1.
>I have built 3 campsites, far from civilization. I'm forced to remember these places by memory, is it possible for a GPS to save these places, like a permanent marker?
Place a "Waypoint" at each of those campsites. A waypoint is a point in space saved on the receiver. With a GPS lock, the receiver can calculate bearing and distance to that waypoint.
If you're worried about losing those points... write down the lat/long. Pretty easy to key that into any receiver, and as long as you're using the same datum it'll take you to the same point in space.
>Datum
Use WGS84 in the US. If you're using the GPS in conjunction with a paper map, match the datum to the map. Chances are it'll still be WGS84. The other popular one is NAD83.
Not going to get too deep into map datums here, but know that if you don't account for that, you could be hundreds of meters off.
>POI
Points of Interest. This is a database built on a computer, basically a list of waypoints. Once you squirt that POI file into the GPS, it's effectively a read-only library of waypoints. If you have a mapset with restaurants/hotels/etc installed, each of those is a POI in the map database. Again, a little more advanced topic.
