Model GXT500/550 Series | ® |
CALL TONE
Your GXT500/550 Series can transmit a call tone for a fixed length of time. To send a call tone, press the CALL button. The TX icon will appear while transmitting a call tone and a tone can be heard on the speaker for confirmation.
KEYPAD LOCK
To avoid accidentally changing the radio setting, press the LOCK button for 4 seconds. The KEY LOCK icon will appear on the display. PTT and CALL will still be active. Repeat the same procedure to unlock the keypad.
DISPLAY ILLUMINATION
During Power on, the display illumination will activate for approx. 7 seconds. The display illumination can also be activated when the MENU button is pressed.
CHANNEL SELECTION (GMRS/FRS BAND)
Press the MENU button once, and then the 
/
buttons to select one of the 22 GMRS/FRS channels. To confirm the selection, press the PTT button or press the MENU button again to move to the next feature setting.
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