While I was working on a blog post about Meshtastic (which will be online soon), I started questioning the time on air in a non-LoRaWAN context, where the online simulators I usually use did not work. This led me to investigate the LoRa frame format (not LoRaWAN, just LoRa, the underlying layer), and to confront the “sync word”, the functioning of a chirp… a whole range of concepts for which I expected to find abundant documentation. After all, in the LoRaWAN world, the open nature of the technology has been emphasized since its inception. However, after quite a bit of research, I still remain somewhat uncertain about the basic workings of LoRa, which at the very least calls for a blog post to compile the information I have found.
I invite those with a solid understanding of the subject to enrich this post with comments, and I will incorporate the key elements accordingly.
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Sigfox just released publicly its Radio Signal Analyzer tool. This is a tool for the device & module maker to prepare the P1 certification : basically it checks the radio signal shape, power… and tell you if you are following the requirements.
This post is a VLOG entry, as usual in French, you will find the english text version in the next part of the post.