Power Selection : Your GXT255 has two transmit power levels. To select the power level on channels 1~7 and 15~22:
•Press 
repeatedly until the “Pr” appears on the display.
•Press 
or 
to select between high and low power levels. The HI/Lo icon will alternately appear during setting.
•Press the PTT button to save and exit.
The HI or Lo icon will appear on the display depending on your setting.
Note : On channel 8~14 no power level selection is possible
VOX : VOX (voice operated transmit) operation allows you to transmit without using the PTT button when using a headset. To enable VOX operation:
•Insert the headset plug(s) into the SPK/MIC jacks.
•Set the radio into VOX mode.
To set the radio to VOX Mode, repeatedly press the 
button until the VOX icon
flashes on the LCD display. Press the 
or 
button to turn the VOX on or off, an “on” or “oF” will appear on the display during setting. The VOX icon will appear on the LCD display if the radio is set into VOX mode.
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