User's Manual

DP770 Instruction Manual 15/27
d) Press or rotate the knob to the target zone, and press to select;
e) The dialog box pops up and the setting is done. Then the radio returns to the previous
menu.
2) Selecting a channel and contact
After the target zone is selected, rotate the knob to select the channel and the contact ID or
group ID.
LCD display screen will indicate the selected zone, channel alias and channel number.
3) Receiving and answering the call
(1) Receiving and answering a group call
In order to receive the group call, you must set your radio as the group member (add your
radio into the group call list).
When the radio receives the group call:
a. GREEN LED indicator lights on;
b. The group call icon
, group’s alias or ID and incoming call icon display on the LCD
screen;
c. Keep your mouth 3~6 inches away from the microphone;
d. Press the PTT key to answer the call and the RED LED indicator lights on;
e. Wait for the Talk Permit Tone to finish（if enabled*）and speak to the MIC;
f. Release the PTT key to receive the call;
g. After the preset time (call hang time) is over, the call is over.
(2) Receiving and answering a private call
Private call is a call from an individual radio to another individual radio.
There are two types of private call in DP770: the first one, where a radio presence check is
performed prior to setting up the call; the second one, the caller and the receiver makes the call
immediately. On one channel, there is only one type of call, which can be confirmed by
programming the channel parameter (Private call Confirm).
When the radio receives the private call:
a. GREEN LED indicator lights on;
b. The private call icon
, the caller’s alias or ID and the incoming call icon display
on the LCD screen;
c. Keep your mouth 3~6 inches away from the microphone;