I have 2 heltec v3 nodes, I setup an encrypted channel between them… I can get good distance but I have a very good network run by others in the area that I piggy back on.

If you have line of sight you can go pretty far

I don’t really have much of a use case though, it’s just playing around with the tech for fun.

Meshtastic can do this, and leverage other nodes as relays.