Wireless technologies, such as Wi-Fi, cellular 4G networks and satellite communication are all radio-based under the hood. Meaning that they all send and receive radio signals, inside of regulated frequency ranges, as their underlying form of communication. For instance, to be "Wi-Fi", the device must send-and-receive radio signals around the 2.4GHz frequency range. For satellite, the signals must be inside the 136-138 MHz frequency range, etc.
I'm wondering what internationally-recognized agencies/bodies regulate these radio-based wireless technologies, both in North America as well as in Europe.
In the United States, I would imagine it would be either the FCC, the FAA, or both, but I can't tell where there regulatory boundaries are. So I ask: what official bodies regulate radio-based communications in these jurisdictions? I'm mostly interested in US, Canada and UK, but would love to be informed about other European (even Asian) countries as well.
Update: Here's a quick useful link for any future-comers that have a similar question: https://en.wikipedia.org/wiki/List_of_telecommunications_regulatory_bodies
update 2022-05-24: The wiki page seems to be missing some countries and links need to be updated. We just curated this list fully: https://www.mcxess.com/telecom-authority/ Hope this helps.