Digital Calling; Group Call - TYT MD-750 User Manual

Note: Since the double wait mode is in the primary and secondary channel scanning by turns, the DTMF signaling
system and auto scan do not work.
2. VFO / MR mode switch
In the main interface, press P2 to switch between VFO mode and MR mode. There is no channel number display in
VFO mode. The receiving frequency can be input manually. The parameters can be changed through menu. Press the
up and down keys to adjust the frequency up and down according to step.
MR mode displays the current channel number. You can manually input the channel number. The parameters can be
changed through menu. Use the up and down keys to switch channels up and down.
3.Digital call
The digital call channel can be configured with an encryption through programming software, and the
encryption switch can also be set by menu -set-radio set -encrypt.

3.1 Group call

Initiation: Set group call contact of the current channel by programming software or manually select the group call
contact in the contact list of the menu of radio, press PTT to initiate the group call. The interface displays: the first
line displays the call type: group call. The second line displays the contact alias and the third line displays the group
call number.
Receive: To receive a call from a Rx group, the walkie-talkie must configure the current channel to belong to the RX
group. When receiving a group call, the LED indicator lights up in green. In the display area: the first line displays
"Group Call", "Call Group Alias" is displayed in the middle, and the Caller ID and Incoming Icon
displayed at the bottom. Hold the walkie-talkie in a vertical position and keep it at a distance of 1 to 2 inches (2.5 to
5.0 cm) from the mouth. Press the [PTT] button to reply to the call and the LED indicator lights up in red. Release
the [PTT] button to answer. If there is no voice activity within the predetermined time period, the call is terminated.
3.2 All call
All call is a call made by an individual walkie-talkie to all walkie-talkies on the channel. It is used to publish
important announcements that require special attention from users.
Initiation: The contact of the current channel configured by programming software sets all call number or manually
selects all call contact through the contact list of the menu of radio, presses the PTT to initiate all call, and the
interface displays: the first line displays the call type: all call; The second line displays the contact alias and the third
line displays all call number.
Receive: The LED indicator lights up in green. In the display area: the first line displays "all call" , the middle displays
"all call", and the bottom shows the caller ID and the incoming call icon
walkie-talkie returns to the screen before receiving all call. If the "channel Freq indication tone" function is
enabled, when the transmitter releases the [PTT] button, the receiver will hear a short beep indicating that the
channel is currently in use but cannot answer all call.
Note: When you receive a all call, if you switch to another channel, the transceiver stops receiving all call. During all
call, you will not be able to use any pre-programmed buttons until the call ends.
3.3 Private call
Private call is a call from one individual walkie-talkie to another individual walkie-talkie. There are two types of
private call: the first type, the walkie-talkie presence detection is performed before the call is prepared (press # key
to enter the number input box, press the OK key to select the call alert or radio check), and the other type is ready
immediately to call.
Initiation: Set private call number of the current channel's contact configured by programming software, or manually
select private call contact through the contact list of the machine's menu, or manually dial (press # to enter the
10
. After the call is terminated, the
are