Direct LORA comms, not a telco service... I am looking at building a Point to point (with mesh repeaters if necessary) timing system that I would ideally like to be able to reliably communicate 20km through forest in hilly terrain. Quite prepared to mesh a few units together and the time to signal the remote end is not time critical (hundreds of milliseconds to even a few seconds is completely fine - timing is handled by GPS sync on both ends.
My question is what sort of aerials would give the best combo of price / range / small size / ease of setup and what sort of range could I expect for LOS and worst case scenario? Just trying to get a feel for achievable range and number of mesh units needed to budget for.
Cheers - N