There are quite a lot of questions concerning GPS device usage, however I couldn't find any specific information on more passive usage (as in waiting for rescue).
Say I have a watch and a phone which both have inbuilt Global Positioning Systems (GPS). When I am stranded in the wilderness, what can I do with them, in order to use them in a most optimal way.
By this I mean, while i'm waiting for search and rescue... for the sake of argument say I cannot use those devices as the actual means of finding my way out, because of some environmental/physical impossibility.
Here are some points which I am interested in, but do not limit your answer to them:
- Should the device be switched on?
- Should the GPS on the device be switched on?
- What can I do to prolong battery life?
- Is the device useless once the battery is dead?
- If I know they are looking for me, would they pick up the signal, if I switch it on for short periods every now and again?
- Is it best if I stay in one place (environment permitting) and would it be harder for them if I am on the move?