vvanders
Platinum Member
No cell phones work in the mountains here after a few km from the highway. Unless you got a good line of sight out to the highways from a distant mountain.
That's why ham radio is nice to have in the back country. With a 5W(about 5-10x more power than your cell phone) handheld I can hit a repeater 100mi+ away if I'm up on a mountain and have line of sight to it. Both our car and truck have 40W mobiles that I can also turn into a cross-band repeater to get coverage down into an area if I wanted too.
Built on the same stuff your Fire/EMS/Police use to communicate in the field(both 2 meter and newer DMR/digital stuff).
Like has been said, you should know what you're doing before heading off into the wilderness but it doesn't hurt to have a little extra bit of insurance.