[ac29]

>background noise, which fluctuates randomly

From years of experience selling, supporting, and installing 900MHz ISM radios, I can tell you this is not the case in many, many places (it describes a greenfield application more or less correctly, though). 900MHz is heavily used in the US and describing the noise as "background" or "random" is disingenuous at best. I'd like to see someone install a LoRa hub on a tower with several other 900MHz radios (common) and see how well it works.

[anfractuosity]

That's very interesting cheers. Just to clarify that quote was from the article this post originally linked to, rather than the paper it now links to.