471. Press and hold the [DISP] key, and then touch [OP-TION].2. Touch [4 Bluetooth Save], and then rotate the DIALknob to select [ON].3. Press the PTT switch to return to normal operation.4 Bluetooth SaveONVOX OperationThe VOX system provides automatic transmit/receive switching activated by voice inputto the microphone or Bluetooth Headset. With the VOX system enabled, it is not neces-sary to press the PTT switch in order to transmit, and it is not necessary to use an ac-cessory VOX headset in order to utilize VOX operation.Setting VOX function1. Press and hold the [DISP] key, and then touch [TX/RX].2. Touch [AUDIO], and then touch [4 VOX].3. Press the [DISP] key, and then rotate the DIAL knob to select “LOW” or “HIGH”.OFF: VOX function OFFLOW: VOX function ON (VOX Gain Level “LOW”)HIGH: VOX function ON (VOX Gain Level “HIGH”)4. Press the PTT switch to return to the normal operation.z Disable the VOX functionTo cancel VOX and return to PTT operation, just repeat the above procedures, se-lecting “OFF” in step 3 above.