User's Manual

DP770 Instruction Manual 25/27
the target radio’s PTT key, (the alert tone indicates that the channel is idle) which means that
the channel is idle and you can answer the call. Press the PTT key to answer the call or long
press the programmed “Emergency Alarm” key to end the alarm.
i) The radio returns to the standby screen.
If your radio sets as Silent, there is no sound or sign in Emergency alarm mode. And the radio
cannot receive the response from other radios, unless you press down the PTT key.
If your radio sets as Silent with voice, there is no sound or sign in Emergency alarm mode or
in receiving the calls from other radio, unless you press the PTT key to make a call or answer the
call.
(5) Sending an emergency alarm with voice to follow
This function allows you to send an Emergency Alarm to the other radio, and then enables
your radio’s MIC automatically, so that you can communicate with other radios without pressing
the PTT key.
The state of which MIC is activated automatically is called “Hot MIC” state. [Hot MIC
Duration] can be set by CPS in the digital emergency system settings.
During Hot MIC Duration, press the PTT key, the radio will neglect the PTT operation and
stays at the emergency mode.
a) Press the key programmed as “Emergency Alarm”, the radio enters emergency alarm
mode, and the LCD displays
.
b) The LCD also displays alarm call group alias/ID, emergency alarm icon
and this
icon
.
c) Keep your mouth 1~2 inches away from the microphone and speak to it. If Hot MIC
enabled, the radio transmits automatically without pressing the PTT key until Hot MIC
Duration is over.
d) During transmission, the RED LED indicator lights on, and the group call icon
displays on the LCD.
e) When Hot MIC Duration is over, the radio stops transmitting automatically. You can
press the PTT key to continue transmitting.
If your radio sets as Silent, there is no sound or sign displayed in Emergency alarm mode.
And the radio cannot receive the response from other radios until Hot MIC Duration is over and
you can press down the PTT key to make a call.