Kenwood TK-5210 Modification Information page 9

6. Solder the Optional Board Connector board to the
SC20-460 board.
Connect the Optional Board Connector PCB to the
cable as shown in the following figure.
SC20-460
PTT SENSE 13
TX OUT 12
RX OUT
11
+V 10
GND
9 Black
PTT (GNT to TX mode)
8
SCRAMBLE (GNT to enable) 7
RX IN 6
TX IN 5
EMERGENCY 4
ON/OFF INDICATOR
3
ECHO PTT 2
BUSY / T/R /TONE DRIVER 1
IRQ E
Binary Code Select 1 D
Binary Code Select 2 C
Binary Code Select 4 B
Binary Code Select 8 A
Gray
Figure 2-1 Connecting the Optional Board Connector PCB
to the SC20-460
MOD (K)/Ver. 1.04
Optional Board Connector
PCB
Yellow
Blue
Red
Violet
Green
Orange
Face Side
5A TXO
STON RXEO
DI RXEI
TCNT TXI
MDWN C3
INH SB2
OPT5 OPT1
OPT4 OPT2
OPT3 DGND
AGND AGND
Back Side
Confidential
2 CONNECTING THIRD PARTY OPTIONAL DEVICES
Solder on the SC20-460 side to connect the Optional
Board Connector PCB to the SC20-460.
SC20-460
A Binary Code Select 8
B Binary Code Select 4
C Binary Code Select 2
D Binary Code Select 1
2 ECHO PTT
7. Prepare the 2 pieces of cushion with double-sided
adhesive tape.
G13-1974-04 (Boron 20 mm x 30 mm x 1.0 mm) can
be used for the cushion.
Note: The above sizes are reference values. You must cut the
cushion tape to the same size as the Voice Scrambler
board.
8. Attach the cushion tape to the both sides of the SC20-
460 board.
Cushion Tape
Optional Board
Connector PCB
OPT5
C3
OPT3
OPT1
OPT4
5
Contents