■ Optional Signaling
Your dealer may also program several types of optional signaling for your
transceiver channels.
2-tone Signaling: 2-tone Signaling opens the squelch only when your
transceiver receives a call containing matching 2 tones.
DTMF Signaling: DTMF Signaling opens the squelch only when the
transceiver receives a call containing a matching DTMF code.
FleetSync Signaling: Refer to "S
MDC-1200: MDC-1200 is a data system using Audio Frequency Shift Keying
(AFSK). Transceivers communicate at a 1200 baud rate, using 1200 Hz and
1800 Hz tones.
LCD BRIGHTNESS
The LCD backlight can be turned off or set to low or high levels. To cycle through
the brightness settings, press the key programmed as LCD Brightness.
• Each press of LCD Brightness cycles the brightness level from high to low to off, and
then back to high.
HORN ALERT
To use the Horn Alert function, your dealer must install an optional unit. When
a call is received that matches the optional signaling set up on your transceiver,
Horn Alert causes the vehicle horn or some other external alert to sound. This
function notifi es you of a received call when you are away from your vehicle.
To toggle Horn Alert ON and OFF, press the key programmed as Horn Alert or
access the Menu {page 9}.
• HA momentarily appears on the display when Horn Alert is active.
PUBLIC ADDRESS (PA)
To use the Public Address system, your dealer must install an optional unit and an
external speaker. This function causes all audio input via the microphone to be
amplifi ed and output through the external speaker.
To use the PA system:
1 Press the key programmed as Public Address or access the Menu {page 9}
• PA appears on the display when the PA system is active.
2 Press and hold the microphone PTT switch, then speak into the microphone.
• Use the Volume Up and Volume Down keys to adjust the audio output from the
external speaker.
3 Press the Public Address key again or change the zone or channel to return
to normal operation.
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