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1. Select your desired channel.
2. Press the key programmed as [UST] to enter the UST mode.
3. Use the Selector Knob to select a desired UST code/ name. The selected CTCSS/DCS
frequency is valid only in UST mode.
4. Press the [UST] key again, the radio exits from UST mode and the LCD returns to the
original display mode.
Public Address
This function can be used to amplify all the audio from the speaker and output the audio
through external speaker.
1.
Press the key programmed as [PA] to activate Public Address function. “PA” appears
on the LCD display. Press the key again to deactivate this function and return to
normal user mode.
2.
In PA mode, no transmission and reception occurs.
3.
Hold down the [PTT] key and speak into the microphone, your voice can be heard
from the external speaker that is connected to the radio. “PA On” appears on the LCD
display.
4.
Release the [PTT] key, the public address process halts and “PA” appears on the
LCD display.
Notes:
? In Public Address mode, turn the volume knob to adjust the volume.
? To use this function, the dealer should install public address optional accessory and
external speaker.
Dual Home Channels
Press the key programmed as [Home CH], the radio will go to the programmed home
channel.
When dual home channels are set, press the key programmed as [Home CH] to switch to
Home Channel 1, press again to switch to Home Channel 2, and press for the third time
to return to the original channel.
Horn Alert
1. Press the key programmed as [HA] to activate Horn Alert function, “HA” appears on the
LCD display.
2. The radio’s accessory ports HRI and HRO is connected when receiving calls of the
matching 2-Tone/5-Tone/DTMF
/
HDC2400
TM
code from the base station or other
radios.
3. Press the [HA] key again to exit from the Horn Alert mode.
Note:
This function is especially helpful when user is away from the radio. It can be used to
control the electronic devices over the air.
