The Geocacher

By: Tessa Green

To make absolutely sure that every geocache hunt is thoroughly fabulous and successful, your GPS must have the ability to do the following:

It must find it’s position quickly and easily. When you switch on, the gps looks around, finds four or more positioning satellites and works out how far away they are. Using this information, it works out its own location. That’s a lot to do. And some GPS do [...]