In the modern public safety arena, fire engines have quite frequently similar problems. The vehicles are noisy enough that hearing protection is required for all onboard personnel, and with good reason. Any sort of conventional radio system just can't hang in that acoustic environment.

So they have rather aggressively noise-cancelling headsets that are also hearing protection, tied into the vehicle-to-vehicle intercom (usually using voice activation, and usually working!), and a PTT button that routes audio to the radio..

I'm starting to see "industrial bluetooth" wireless versions of this equipment, which I think is a grand thing, provided it _works_