VOX feature will not work without the Vox Headset Microphone. The built in mic of uh078sx is temporarily disabled, however accidental pressing of PTT will cause the unit to transmit briefly.
To activate VOX
1.Press 
two times.
VOX and the current VOX setting flashes.
2. | Press | or | to select desired VOX |
| level (oF, 1 to 9). |
| |
3. | Press and hold | to store setting. | |
4. Install VOX Headset (not supplied) to uh078sx.
To De-activate VOX
1.Press 
two times.
2.Press 
or
to select OFF ("oF").
3. Press and hold | to store setting. |
18
