Kenwood TK-780 Service Manual

Also see for TK-780 series: Programming instructions Instruction manual Service manual supplement Instruction manual Service manual

22TK-780 INSTALLATION4. Ignition Sense Cable (KCT-18 : Option)The KCT-18 is an optional cable for enabling the ignitionfunction. The ignition function lets you turn the power to thetransceiver on and off with the car ignition key.If you use the Horn Alert function or the Manual Relayfunction, you can turn the function off while driving with theignition key.2-1. Connecting the KCT-18 to the Transceiver1. Install the KCT-19 in the transceiver. (See the KCT-19section.)2. Insert the KCT-18 lead terminal ( 2 ) into pin 3 of thesquare plug ( 1 ) supplied with the KCT-19, then insertthe square plug into the KCT-19 connector ( 3 ).1361315KCT-18KCT-19Contact1 23Fig. 34-2. Modifying the TransceiverModify the transceiver as follows to turn the power orthe Horn Alert or Manual Relay function on and off with theignition key.1. Remove the lower half of the transceiver case.2. Set jumper resistors (0Ω) R151 and R152 of the TX-RXunit (A/2) as shown in Table 1.TX-RX UNIT(A/2)KCT-19CN7R151R152ANTFig. 4Operation when KCT-18 is connected R151 R152KCT-18 cannot be connected Enable EnablePower on/off and Horn Alert or Disable EnableAUX-A on/offHorn Alert or AUX-A on/off, Timed power off Enable DisablePower cannot be turned on Disable DisableTable 1 R151 and R152 setup chart5. Optional Voice Scrambler FunctionThe optional voice scrambler function can be used by twomethods.1. Assign this function to the Scrambler key by using theprogramming software (KPG-60D).When the Scrambler key is pressed, the ··· indicatorcomes on, and the optional (scrambler) function is en-abled.When the key is pressed again, the ··· indicator goesoff and the function is disabled.2. Assign the optional scrambler function to each channelby using the programming software (KPG-60D). The op-tional scrambler function can be used without pressingthe Scrambler key.5-1. Code SettingThe code can be set by two methods.1. Hold down the Scrambler key to enter the code settingmode. Codes 1 to 16 will be displayed. Set a code byturning the [Up/Down] key. When the Scrambler key ispressed again, the code setting mode terminates.2. Set a code for each channel by using the programmingsoftware (KPG-60D).5-2. Voice Scrambler Board Connection• Modification1. Remove the upper half of the case of the TK-780.2. Remove R529 and R571 on the TX-RX unit (X57-614 B/2).