With Lorawan or meshtastic, what’s the practical max range for a line of sight connection between 2 devices (or a device and the base)? I have a need to mount a

With Lorawan or meshtastic, what’s the practical max range for a line of sight connection between 2 devices (or a device and the base)? I have a need to mount a weather station on top of a mountain and our free flight club’s landing zone is about a mile and a half line of sight from there. The mountain gets a very weak cell signal (closest tower is probably 2-3 miles away) and would be great to have a better solution.