That IDK. But, some people claim the move from wired headset communication to wireless. is at least part of the problem.
meaning easier to jam. here's and example in big concerts now with the right gear. You can now steal the soundboard mix, make a bootleg of almost studio quality. No more dragging a mike in and creating a " audience" tape. proof is the recent stones tour ( well any group) is available on cd on ebay all soundboards. this has been going on since wireless tech began.
So I think regardless that the NFL owns the equipment etc. It is comically easy for say the pats** to jam it.
bring back the wires!!! or give the NFL in that booth capacity automatically to shut down both teams when it begins. that shouldn't be that hard one would think.