Motorola 53725 Headset/Swivel Boom Microphone For Talkabout(Tm) 2-Way Radios
The VOX in the Talkabout is not as instantaneous as I thought it should be.  We are trying to use it to communicate when we are parking our 32 foot 5th wheel trailer (must work in either rain or shine).  It has to work flawlessly because of the consequences of running into something with a 6 ton trailer.  If it does not work well enough for that application on our next try, we will be looking for another solution.