4 of 12 2008-6-2
Companding State display
Talkaround State display
Interference State display
P2
OST State display
2.3 Rear Panel
⑴⑵⑶⑷
（1）Antenna Interface
（2）Power Interface
（3）15Pin Extended Serial Interface
（4）External Speaker Interface
3． Basic Operation
1. Startup:
Press the red POWER button for a long time (at least 1.5 seconds) to start/close the intercom.
2. Volume
Press the “MONITOR” or “Squelch” button to listen to the background noise first, and then
adjust the volume by turning the volume control knob.
3. Channel
The intercom can provide 128 conventional channels (There are totally 16 groups and each has
at most 16 channels). Press the “CHANNEL UP” or “CHANNEL DOWN” button to select the
channel. Press the “GROUP UP” or “GROUP DOWN” button to select the group you require.
4. Transmission
To send a call, press the PTT button and speak to the microphone in the normal voice. Please
keep the microphone about 3 or 4 cm far from your mouth. After speaking, please loosen the
PTT button.
5. Receive
The intercom will return to the receiving state after you loosen the PTT button.
The distributor may have set the QT/DQT signaling in the program of your intercom. Where the
channels for these functions are set, you can only hear the call from other radios in your system,
but not all calls.
4． Program Button Function
/ ， ， ， ， can be programmed as one of the auxiliary functions.
Buttons Function Description
0. None No function setup
1. Channel Up Select the previous channel
2. Channel Down Select the next channel
3. Group Up Select the previous group
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