+1 on VOX, and then making sure it is not getting bumped. Had several users, myself included that did not realize that how we wore them, we were bumping the PTT button enough to transmit. Some were wearing badges so mic was hitting badge, some ID holder, others, other equipment. To make it worse, I wear my radio itself in a cargo pocket, which means I sometimes key up when sitting down or standing up from the chair. MDC ID, means everyone knows the culprit too.