"one of the heli's various wireless receivers"
What the hell is a combat helicopter doing with wireless receivers ? Even if I can accept that they may have a use when on base, shouldn't they be shut down when in flight ? Isn't that something that could enable their detection ?
Even if not, I highly doubt that a combat helicopter is broadcasting anything that a wireless receiver could have a use for. There is undoubtedly a (shielded) wired data bus between all elements that need it. Any wireless receiver should be shut down when in flight, that would end the problem.