In this tutorial we explain how to make an 868/915 MHz co-linear antenna for LoraWAN gateway with RAK831 and Raspberry Pi Zero W for The Things Network https://github.com/IRNAS/ttn-irnas-gw.

Bending the wire for the co-linear 5.5dB antenna is likely the most challenging part and requires special care. Note that the frequency is tuned with the diameter of the loop and thus it must be made rather precisely. Design of the antenna is available in pdf Collinear 868 MHz LoRa antenna - https://github.com/IRNAS/ttn-irnas-gw....

Institute IRNAS - http://irnas.eu/

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