Kenwood 229900 Instruction Manual page 38

TK-481 Terminal Descriptions
Universal connector
It is possible to use a resin-based cover for the Universal connector.
NO. Name
1 SSW
2 SP+
3 SP-
4 MSW
5 EMC
6 ME
7 PTT
8 PF
9 NC
10 E
11 5M
12 TXD
13 RXD
14 NC
Antenna Terminal
50 Ω impedance
Battery Terminal
The battery terminal uses a spring plate.
The negative terminal connects to the chassis ground.
The battery is mounted on the rear and upper side of the transceiver using a
sliding mounting method.
1 +
2 -
Description
Ext/Int Speaker Switch Input
BTL Output + for External Speaker 8 Ω
BTL Output - for External Speaker 16 Ω
Ext/Int MIC Switch Input
External MIC Input
External MIC GND
External PTT Input
Programable Function Key Input
Not used
GND
5V power supply output
Serial Data Output
Serial Data Input
Not used
Antena
1 2
Back side view
Impedance
High Impedance
High Impedance
1.8 kΩ
GND
High Impedance
High Impedance
-
GND
5V
CMOS
CMOS
-
I/O
I
O
O
I
I
-
I
I
-
-
-
O
I
-