Cell phone as walkie talkie
Does anyone know whether it's possible to re-purpose old cell phones as walkie talkies? I have some "old" phones (1X Tri-mode - 1.9 GHz and 800 MHz CDMA and 800MHz AMPS), and I'd love to be able to use them for our ski club as a short range back channel for communications in addition to the radios we use when we host races.
I'm assuming we'd need to get some sort of base station, not sure where or how. There are probably some laws we'd have to comply with, assuming that something like this is even possible (I'm in Canada).
I'd consider activating & using them normally, but the cell coverage on our mountain is very weak and unreliable, hence this post.
Any ideas on how to get something like this started? Or is it a non-starter?