Voice activation I have these Motorola Talkabout T5000 walkie talkies. One has a head set, one does not. I read in the manuel that if a headset is on, that walkie talkie switches to voice activation-- so the person without the headset can always hear what the person with the headset is saying, without them pushing the button. And the person with the headset will be able to hear the person without the headset, as long as that person is pushing the button. Basically, I need the one headset to always be sending the persons voice without them pushing the button-- and I need them to be able to hear me when I push the button on my side.