•Intercom
Press this key to toggle the Intercom function ON and OFF. “INTERCOM” appears on the display when Intercom is activated. To use the Intercom function, your dealer must first install a
•Key Delete
Press this key to enter Encryption Key Delete mode. While in Encryption Key Delete mode, you can select the key you want to delete. Refer to “DELETING THE ENCRYPTION KEY” on page 24 for details.
•LCD Brightness
Press this key to change the brightness level of the LCD. Each time this key is pressed, the brightness levels cycle as follows:
High 
Medium 
Low 
Off
•Monitor
Press this key to turn the transceiver signaling off. This will allow you to listen to all calls that are received on your selected channel. While monitor is
activated, the 
Press and hold this key for 2 seconds to turn the transceiver squelch off. This will allow you to better hear weak signals on your selected channel, as well as
background noise. While squelch is off, the 
•None
No function has been programmed on the key.
•Operator Selectable Tone
Press and hold this key for 1 second to enter Tone Selection mode. When activated, the 
and 
keys, use the CH control, or enter a number using a DTMF keypad to select your desired tone or code. Press the PF 1, PF 2, or DTMF 
key to complete the selection.
To toggle the OST function ON and OFF, press the Operator Selectable Tone key. Refer to “QUIET TALK (QT)/ DIGITAL QUIET TALK (DQT)” on page 25 for details.
•OST Down
Press this key to decrease the Operator Selectable Tone number of your selected channel. (This key functions similar to the Operator Selectable Tone key.)
•OST Up
Press this key to increase the Operator Selectable Tone number of your selected channel. (This key functions similar to the Operator Selectable Tone key.)
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