Gene Seibel wrote:
Some 2-way
radios we used in broadcasting had timers that shut them down after 5
minutes because they weren't designed for full time duty cycle. That
wouldn't be a bad idea either.

Most programmable communications transceivers have a timeout feature
(with selectable delay). Really helps in stuck mike situations (and
pulls the rug out from under long-winded people, too). All 2-way
transmitters should be so equipped.

David Johnson