Antennas and height make a huge difference. I’ve got a hop from my place to a friend that’s a little over 3km non line of sight (terrain/hill between). Can’t do that with the stock rubber ducky antennas, but with a swr meter tuned home made dipole antenna on a 4m pole on my roof it’s rock solid (using 433MHz, not sure if 815/915 would get that far).
unfortunately that raises the entry level by quite a bit but definitely worth a shot. I need to check about the band, cause most of the LoRA I saw being sold in the UK are 868/815, but a cursory google search says that 433 might be allowed. Will take another look thank you.
