Kenwood TKR-751 Modification Information page 13

SC-20-460
Signal
No. Color
name
BIN. (WHT/
A
CODE8 YEL)
BIN. (WHT/
B
CODE4 GRN)
BIN. (WHT/
C
CODE2 RED)
BIN. (WHT/
D
CODE1 BRN)
E IRQ N.C.
1 BUSY N.C.
ECHO
2 N.C.
PTT
INDICATO
3 N.C.
R
4 EMG N.C.
5 TX IN (YEL)
6 RX IN (BLU)
SCRAMB
7 (WHT)
LE
8 PTT (GRY)
9 GND (BLK)
10 + V (RED)
11 RX OUT (GRN)
12 TX OUT (ORN)
Figure 3-1 Connecting the SC-20-460
Note: The KENWOOD service parts (E37-0808-05) have a
connector allowing you connect it to CN-601 of the TKR-
750/850/751/851.
6. Prepare the cushion having a double-sided adhesive
tape. In this case, the cushion tape (No. 4008,
No. 4016) manufactured by 3M can be used.
Cut the cushion tape in the same size as the SC20-
460 (24 mm x 33 mm).
Version: 1.02 USA
E37-0808-05 CN601
Signal
No.
name
1 TXO
2 TXI
3 RXO
4 AC
5 BC1
6 BC2
7 BC3
8 BC4
9 PTI
10 CLRC
11 RXI
12 PTO
13 8C
14 GND
Modification Information (MOD)
3 INSTALLING THE VOICE SCRAMBLER BOARD
Color
YEL
33 mm
ORN
BLU
VIO
WHT/
Note:
BRN
" The 3M cushion tape having a double-sided adhesive tape has
following thickness.
WHT/
RED
No. 4016 (or No. 4416): 1.6 mm (1/16 inch)
No. 4008 (or No. 4408): 3.2 mm (1/8 inch)
WHT/
" The above sizes are reference values. You must cut the
GRN
cushion tape into the same size as the Voice Scrambler.
WHT/
7. Stick the cushion tapes both side of the SC20-460.
YEL
BRN
WHT
GRN
GRY
RED
BLK
24 mm 24 mm
33 mm
8