> The "airport radio" in question is weather radar
Ah, ok. Weather radar is very different from "airport radio". For the latter I have a very hard time seeing how someone's ordinary wifi router could cause interference, but weather radar antennas have to be much more sensitive.
https://en.wikipedia.org/wiki/Dynamic_frequency_selection
(some devices try to avoid this by scanning the spectrum for weather radars...user indignation at unavailable channels follows)