> the FCC does not exist outside the US so is this relevant elsewhere?

Your own country likely has an analogue. Get thee to Google. Ofcom is the UK equivalent, for instance.

It just tells you who needs shot first.

What do I care about some law student latin?

I know the analog of the FCC in my country. I have not ever heard about them knocking on anyone's door, ever so that's why I'm asking questions?

The world is a bitch in that it is your oyster, right up until you start impacting something everyone else is counting on. In that case, it is not infrequent for one to be made an example of.

That law student Latin there is a reminder that in spite of you "not knowing" something, the world still turns, you are expected to do some level of research, and there are people whose job is to just search for violations, and dispense a Notice of Apparent Liability to the perpetrator.

Hell, Amateur radio operators run what they call foxhunts when they notice something odd going on, because spectrum misuse impacts everyone.

Messing with Doppler weather radar is a usually a big thing that impacts various important services. Even in relatively backwater countries you will get someone knocking at your door if you do this.

Here’s an example of what it can look like on the weather radar side: https://www.reddit.com/r/techsupportgore/comments/lnxdji/whe...