1) When do I select VOX and PTT during use?
VOX (voice activation of the microphone) is designed for convenient hands-free operation of your radio communicator, but requires proper input level selection and proper voice level control for optimum use. Also, as it can’t distinguish between the voice and other audio picked up by the microphone (such as engine or wind noise), VOX generally works best with quiet motorcycles and at low to moderate speeds. If you are having problems with false triggering of the VOX you should use the PTT (Push- to-Talk) mode. This is the recommendation for use at higher speeds, when there is the highest chance of wind noise triggering the VOX.