Not sure if that’s low cost enough for you but I highly recommend the Solar P1 (pro) from Seeed. It’s a beast.

Skynet? T-1000E is already out just out of stock everywhere now it seems. Where I ordered it was on back order but not it’s not coming it seems.

Haha true. Messaging of course. It’s more about “dinner is ready” and “I am stuck, bring the tractor” 🤣 so a message is plenty. Also of course thinking about an emergency network eventually between neighbours.

Some trees and lots of dips but we have our house at the highest point (even considering neighbours and even extended neighbourhood). If I am going ahead with this (after some play time) I am thinking a solar node on the roof …

We have a farm. I want to see if we can replace walkie talkies as we just always forget to bring them. These little guys enable your phones even without cell reception. At least that’s what I want to try.