I could probably find such a transmission using my personal equipment in a relatively short amount of time. That’s all well and good, but you’re a city council person and a constituent complains. Then another, and another. Call up mikestew and his crack team of Rogue Transmission Finders? No, you went to business school, you haven’t the first clue how this shit works. I mean on the level of “it uses radio waves? Is it like WiFi on my computer?” cluelessness. Garage door people, though a good first guess and good folk who know how to fix that giant spring without getting killed, are not RF engineers. AT&T? phhhhttt, what, they’re sending their crack RF engineer into the field to diagnose a frequency that is not in their allotted bands? And everyone’s cell phone still works, so take a guess at what defined “best effort”.

So my guess is the vast majority of the time was spent tracking down someone with equipment and the knowledge to use it. Or probably more accurately, just finding the person who even knows who to ask in the first place.