One of my birthday presents this year was two 900MHz Adafruit feather M0 LoRa 900MHz boards. I hadn’t had a chance to try them out but just before going on holiday I realised that our destination in the Alps might provide a nice testing ground (or mountain) so added them to my hold luggage.
The post is amazing in that he had a transmitter in a chalet in the valley and took a receiver on a cable car up the mountain – and it worked (out the window due to the metal car acting as a bit of a Faraday Cage).
Even on flat ground, with trees and buildings in the way, I was still able to exchange packets at 2.60km, and after that point I rounded the edge of the opposite mountain which probably blocked any further data.
LoRa radios are becoming more popular for radio packet transmissions. Check out the full range of LoRa products carried by Adafruit.
See the full post on testing the Feather LoRa boards on the Easily Distracted blog.