Mode Button (12)
This button is used to select the various feature settings in the GMRS/FRS or FM radio band modes. Holding the MODE button longer than 2 seconds will toggle between the GMRS/FRS and FM band modes.
External Microphone (MIC)/Speaker (SPK)/(CHG) Jack (6)
This jack accepts an Audiovox Earbud/microphone connector, or the Charging Adapter connector. For equipment and accessories supplied with the GMRS500SLK, refer to Page 7 and/or visit the Audiovox web site at www.audiovox.com.
VOX/LOCK Button (14)
Press this button momentarily to enable or disable the VOX mode;
the 
icon will appear in the middle right side of the display when VOX is enabled. Press and hold the button for more than 2 seconds to enable or disable the LOCK mode; the keylock icon (
) will appear to disable the MODE, SCAN and channel up/down buttons.
Operating Modes and Features
GMRS Operation:
-From GMRS/FRS standby mode, press and hold the ( 
) button for at least 2 seconds to turn on power.
-Press the MODE button so the Channel number flashes.
-Select the desired channel with the Up (10) and Down (11) Buttons.
When receiving a call, the 
icon appears to indicate the incom- ing signal.
-Press and hold the PTT button (4) to transmit, then speak into the microphone clearly and slowly. The Transmit Signal indicator
( 
) appears on the display.
NOTE: When the transmission is not available with beep tone, the battery is low; recharge the unit.
When the battery icon is flashing, transmitting is not possible; recharge the unit.
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