Kenwood TK-782, Service Manual, Page: 30 / 91

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TK-782
1-2. KCT-19 Accessory Port Function
No. (A) No. (B,C,D,E) Name Function Note
1 D-2 AHK External hook input.
2 D-5 ME Microphone ground. *1
AM Speaker audio mute input.
3 D-3 IGN Ignition sense input.
4 D-1 DEO Receiver detector output.
5 D-6 MI External microphone input. *1
TXS Transmitter sense output.
6 B-2 E Ground.
7 B-3 SB Switched B+, DC 13.6V output.
Maximum 0.75A
8 D-7 PTT External PTT input, active low.
During DTC is low, it works as
DATA PTT.
9 D-4 DI Data modulation input.
10 B-1 HOR Horn alert/call output.
11 D-8 SQ Squelch detect output, active low.
12 C-1 SP Speaker audio output.
13 E-1 CN2 LOK TX logic signal output, *1
and active low. *2
CN4
CN2 AM
Speaker mute input.
14 E-2 CN4 RXD Serial control data input. *2
CN2 MM MIC mute input, active high.
15 E-3 CN4 TXD Serial control data output. *2
CN2 DTC Data control channel signal input,
*1 Data channel : Low
LOK TX logic signal output, active low.
TXS Transmitter sense output,
Active high.
FSW Foot switch input, active low.
Note
*1 : The functions of A-2, A-5, A-13 (when connector E is connected
to CN2), and A-15 (when connector E is connected to CN2) are
changed as described in the jumper chart.
*2 : The functions of A-13, A-14 and A-15 are changed if the connec-
tor E is connected to CN2 or CN4 of the radio.
No. CN2 CN4
E-1 LOK/AM LOK
E-2 MM RXD
E-3 LOK/DTC/TXS/FSW TXD
#
Connect CN6 of the radio to connector C of the KCT-19 instead
of to the internal speaker connector, if use external speaker.
INSTALLATION /