https://www.airspayce.com/mikem/arduino/RadioHead/RH__RF95_8h_source.html
https://josefmtd.com/2018/08/14/spreading-factor-bandwidth-coding-rate-and-bit-rate-in-lora-english/
https://lora-developers.semtech.com/library/tech-papers-and-guides/lora-and-lorawan/