TERMINAL DESCRIPTIONS
Speaker/ Microphone Jacks
You can use a resin-based cover for the Speaker/ Microphone
jacks.
No.
Name
1
PTT/RXD
2
MICI
3
MICO
4
OPTDET
5
50V
6
AE
7
TXD
8
SPI
9
SPO
Antenna Terminal
50 impedance
ii
Description
PTT input / Serial data input
MIC input
Output from internal MIC
Option Detect
5V output
Audio Earth
Serial data output
To internal SP
AF power output
Impedance
10 k
1.8 k
−
74 k
−
GND
6.8 k
8 (Load)
−
I/O
I
I
O
I
O
−
O
I
O