The main issue these days is the 5GHz band that might interfere with radar. That's mostly an issue outside near an airport, that is, it affects practically nobo

The main issue these days is the 5GHz band that might interfere with radar. That's mostly an issue outside near an airport, that is, it affects practically nobody, so the solution is to snoop the problematic bands and disable them when detecting radar signals, and use them otherwise for a bandwidth boost. These days this seems to be mostly done in wifi chip firmware (that is then signed and under lock and wrap to make it tamper proof), but back in the day it was too easy to circumvent the mechanism.