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VOX feature will not work without the Vox Headset Microphone.
The built in mic of uh073sx is temporarily disabled, however
accidental pressing of will cause the unit to transmit briefly.
Changing the VOX sensitivity setting to "oF" without removing the
microphone will cause the unit to transmit continuously.
To activate VOX
1. Press and hold for 1.5 secs. "VOX" icon blinks.
2. Press either or within 10 secs. to select the desired
VOX sensitivity level (9 with the lowest sensitivity to 1 with the
highest sensitivity).
3. Press to save the selected level. "VOX" icon stops blinking.
4. Install VOX Headset (not supplied) to uh073sx.
To De-activate VOX
1. Remove VOX Headset from uh073sx.
2. Press and hold for 1.5 secs. until "VOX" blinks.
3. Press repeatedly and until "oF" is displayed.
4. Press to save the setting. "VOX" icon disappears.
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