I replied to Jordan direct to say that I'll post some of the answers over here for all to see.
First off, deal with the tk-860H, which is different from a tk-860g... and I believe the "H" is the higher power version of the plain tk-860. The labels on the KCT-19 pins/wires will change but the PTT and COR wires are KCT-19 pin 8 and 11 or 13. The function of the radio cor out logic being tied to CTCSS and/or Carrier Squelch is dependent on the specific radio. Some of the earlier 1995 era mobiles required a few internal hardware changes to bring out a Tone Detected COR function from the KTC-19 connector. Was not a problem in most all later model radios... So I suspect you'll have to do a bit of minor hardware modifications to change the COR output line from Carrier Squelch to CTCSS activation. One application note I have here regarding pin 13 operation for Radio COR Output: Solder the two anodes of D205 together to route the audio mute signal out to the KCT-19 cable. Refer to page 55 of the Kenwood manual for parts location. I suspect the pin 13 cor output label is wrong and you should investigate using pin 11 as the cor output as indicated on most other kenwood radio model. The TK-860H is an older radio and it's connection information to external devices (the outside world) is a bit vague. You'd probably need a Service Manual for that specific radio model to sort out the proper CTCSS routed to cor output logic/wire configuration. The TK-981 follows the convention of newer mobiles so its COR should be tied to CTCSS. Otherwise post a want or email me direct again. cheers, skipp ps: I have a ton of message from group members I'll try to respond back to asap... things have been nuts as of late, which I guess is a good thing. > "J C" <jcar...@...> wrote: > > I am looking to a pull tone-operated squelch logic on a TK-860H and a TK-981. > The KCT-19, as many know only outputs carrier logic regardless of PL/DPL > status. Has anybody got notes somewhere on where the best point to pull logic > out for active PL? > > > Thanks, > > Jordan >
