One day the phones will stop working, or you'll get tired of big brother snooping all your conversations. Meshtastic equipment is about $25 for the radio, another $10 for an antenna. Add a $20 solar panel and an 18650 battery and you've got a solar powered node for the mesh network. Get a cheap pelican case from harbor freight and put magnets on it, and yes, put some vent holes in it and paint white. Now climb a water tower… or farmer's silo…. or even climb a tree with a deer stand and screw it to the side of the tree 50' up. While you are up there look around for the next tall object and repeat.
You can get a LillyGo T-Deck that looks like a black berry phone for each user in the network. Or you can use the $25 radio and a cell phone. Best to use an android phone and turn off wifi and cell service.
This website is a good resource for identifying ridges and obstructions. https://www.scadacore.com/tools/rf-path/rf-line-of-sight/















