In VOX mode, the radio will transmit a signal only when it is activated by your voice or other sound around you. The unit will transmit for a
short time (approximately 2 seconds) after you have stopped talking.
The level of VOX sensitivity is shown by a number on the LCD screen (Off to 3 levels).
At the highest level (1), the unit will pick up softer noise (including background noise). At the lowest level (3), it will pick up only loud
VOX operation is not recommended if the radio will be used in a noisy or windy environment.