Kenwood TK-2180 Modification Information page 35

4. Setup each signal of optional board following below.
(Refer to 1.2 26-pin Accessory Connector.)
Table 3-1 Terminal Description
Land Name I/O Board Function
OPT1 O CODE Select 1
OPT3 O CODE Select 2
OPT6 O CODE Select 4
OPT5 O CODE Select 8
OPT2 O SCRAMBLE
O
TXD1
I PTT IN
OPT4 O ECHO PTT
TXO O TX IN
RXEO O RX IN
RXEI I RX OUT
TXI I TX OUT
SB2/ 8C O
GND Ground
5. A protective cloth and adhesive cushion tape are
required for the TK-2180/3180 transceiver and a
cushion tape below is required for the TK-7180/8180
transceiver.
A cushion tape, manufactured by 3M (No. 4008 or No.
4018) is recommended. A No. 4008 tape is used for
the TK-7180/8180 transceiver.
6. For the TK-7180/8180, cut out the cushion tape and
cloth as same size as the SC20-460 PCB.
• As for the TK-2180/3180, cut out the cloth as
27mm x 80mm and as 20mm x 25mm for the
adhesive cushion tape.
• Cut out the cushion tape as 110mm x 25mm as
shown below (TK-7180/8180).
REMARKS
Active L
Active L
Active L
Active L
Active L
PTT TX; L
Not Available
(Ask R&D)
Not Available
(Ask R&D)
Scrambled
Transmit Audio
Receive Audio
Scrambled
Receive Audio
Transmit Audio
7.5V typ
+V
8.0V typ
-
20 mm
25 mm
80 mm
Note: The above cut-out sizes are for the typical installation
7. Stick the cushion tape cut at the previous step on the
SC20-460 board.
• Wrap all round to the SC20-460 board with the
protective close and stick the cushion tape on the
bottom side as illustrated for the TK-2180/ 3180
transceivers.
• Wrap and shape the board with the cushion tape
as shown in the figure.
8. Cut the cable in order to solder easily.
• Approximately 10 mm for TK-2180/3180.
• Approximately 40 mm for TK-7180/8180.
27 mm
110 mm
purposes. The size may varies depending on the
installation conditions.
Protective Cloth
Cushion Tape
25 mm