Bumping up this old thread because I'm going to replace my dedicated PLB with a Delorme. The messaging functionality is just huge.
Two questions: do steep mountain gorges mess with the ability for it to pick up signal? I know black timber does and that's fine, but wondering about river bottoms in steep country (I raft as well as hunt). Also, is the Explorer model enough to have basic "backtrack" GPS capability? I essentially use my current GPS to just drop waypoints and then navigate back to them. Can I do the same?
Thanks!