Press this key to switch the display between the zone and channel number and the zone and channel name (if names have been programmed).
•EmergencyRefer to “EMERGENCY CALLS” on page 25.
•External SpeakerPress this key to switch the speaker from the transceiver’s 
Press this key, then press a programmable key to activate its secondary function.
•GPS Position DisplayPress this key when the GPS unit has been installed to display your location data.
•Home ChannelPress this key to jump to your home zone and channel
Press this key to toggle the Horn Alert function ON and OFF. “HORN ALERT” appears on the display when Horn Alert is activated. When a call is received that has a correct DTMF code or
Refer to “Making Individual Calls (P25)” on page 13.
•IntercomPress 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
Refer to “Deleting the Encryption Key” on page 27.
•KeysetPress this key to change the Keyset stored in a Secure Cryptographic Module (SCM).
•LCD BrightnessPress this key to change the brightness level of the LCD. Each time this key is pressed, the brightness levels cycle as follows:
High 
Mid 
Low 
Off
Press this key to turn the transceiver signaling off, to listen to all calls that are
received on the channel. While monitor is activated, the 
32
Press and hold this key for 2 seconds to turn the transceiver squelch off, to listen