10
DB-750X
4
MIC Connector Diagram (in the front view of connector)
Getting Acquainted
MicRophonE
Key Pad Serial data
+5V
dOWN
UP / SPKR AUdIO OUT
MIC GNd
MIC
PTT
GNd
NO. KEY
FUNCTION
1
UP
Increase frequency, channel number or
setting value.
2
DOWN
Decrease frequency, channel number or
setting value.
3
PTT
Press the PTT (Push-To-Talk) key to transmit.
4
Number Key
Input VFO frequency or DTMF dial out etc.
5
A/B band
Choose left band or right band as Main band
6
Band indicator
The indicator light on for Main band.
7
TX/RX indicator
Light green while receiving, Light red while
transmitting.
8
MIC
Speak here during transmission.
9
Speaker
Option to hear speaker thru microphone.
1
2
3
5
6
7
8
4
DN
UP
1
4
7
8
9
0
#
5
6
2
3
PA
MIC
PB
A
B
A
A/B
B
PC
PD
MAIN
9
