TL;DR
Raspberry Pi LoRa gateway
* Raspberry Pi 2/3 with HopeRf RFM98 shield from store.uptronics.com
* antenna can be yagi
* software on Pi adapted from Dave Ackerman's LoRa gateway software for High-altitude baloons
http://www.daveakerman.com/?p=1719
* Pi receives messages from LoRa and reconstructs full sentences (!AIVDM header is stripped from the on-air backhaul to save size, so is reconstructed on the Pi before pushing to the LAN over UDP
* pi also receives battery level from the remote receiver and publishes to IoT cloud e.g adafruit.io
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