We've got it (and that radio - how come cellular phones are playing card pack size and we have this behemoth to carry around on an already over-crowded belt?) and it works. A 2nd button is also located on the lapel mic. Pushing the button does not disable anyone's ability to talk on the channel including the officer in trouble. Pushing the button does tell dispatch exactly which officer (down to their name) is in trouble. Most (85%) of our cars also have GPS on them and dispatch can watch us roll around on a moving map display in real time. At the touch of a button the map will scroll to whatever car they want to locate. False alarms are more common then the real thing.
That being said a department where officers can drift towards each others calls is a nice 'emergency' feature that makes the button very effective. Nothing like having 30-60 second response time when backup is needed.
Yeah, well, I guess he had it comin'- the kid
We all got it comin', kid - W. Munny