UNIDEN Model UH400SX,
Operation
Busy Channel Lockout
If the channel is already in use, you can prevent the UHF CB Radio from transmitting . This is particularly important when using CTCSS/DCS.
1. Press [MENU/ENTER] five times. The BCL setting flashes.
2. Turn the Rotary Channel Selector at
the base or press 
on the Remote SPK/MIC to change the setting between ON or OFF.
3. Press [MENU/ENTER] to store the setting.
4. Press and hold [MENU/ENTER] to exit from the menu mode.
If a button is not pressed within 10 seconds the UHF CB Radio will automatically exit the Menu Mode.
VOX Operation (optional VOX headset required)
1. Press [MENU/ENTER] three times. The VOX setting flashes.
2. Turn the Rotary Channel Selector at
the base or press
on the Remote SPK/MIC to change the VOX sensitivity (oF (OFF), 1 (highest) - 9 (lowest)).
3. Press [MENU/ENTER] to store the setting.
4. Press and hold [MENU/ENTER] to exit from the menu mode.
5. Disconnect standard or Remote MIC and connect the VOX headset.
•The VOX function works only with base in place of the standard MIC and Remote SPK/MIC.
•If a button is not pressed within 10 seconds the UHF CB Radio will
automatically exit the Menu Mode.
27
uh400sx, uh500sx,
1/2/08 1:31:29 PM