At 12:54 PM 04/22/08, you wrote: >Im building a Kenwood KTR-820 repeater useing the >Arcom RC-210 controller. I'm in the process of wiring >a Comspec Tone board for my CTCSS PL tones. Any help >would be appreciated. > >I tried to use the internal controller for my PL tones >but when I plug the internal controller plug back I >lose COS control on the Arcom. > >Frank
This was posted on the Scom yahoogroup a while back... >From some old notes: > >TKR-720/820 Accessory Connector: > >Pin 1 - jumper to pin 11 >Pin 2 - transmit audio ground >Pin 3 - modulator in (used as external PL injection input - don't use > for anything else) >Pin 4 - discriminator out (hook the audio in of any external PL/DPL decoder(s) here, > otherwise don't use) >Pin 5 - Transmit audio in (if using shielded cable - recommended - tie > shield to pin 2) >Pin 6 - external speaker ground (see pin 12) (jumper to pin 11) >Pin 7 +12vDC out of the TKR - will source up to 1 amp - you can power > an external comtroller from this >Pin 8 - PTT in (ground to xmit - must set timeout timer in TKR to off) >Pin 9 - speaker terminal (jumper to pin 12 to enable internal speaker) >Pin 10 - de-emphasized receiver audio (i.e. repeat audio out) >Pin 11 - ground >Pin 12 - speaker audio out - jumper to pin 9 >Pin 13 - COS out (set repeater to carrier sq mode and use external PL decoder) >Pin 14 and Pin 15 are empty holes in the Molex plug (i.e. are not used) > >Pin 1 on the 820 must be grounded to tell the TKR to use >an external controller and a jumper must be between pins >9 and 12 to enable the internal speaker. > >My old notes don't say WHY it was that I set the TKR repeater >to carrier squelch mode and used the external PL decoder. WD8CHL pointed out that... >The COS output will be either true COS or TOS if programmed for tone >squelch rx. To use the internal decoder, and still have a true COS out >(to allow the external controller to switch to carrier sq on command) >requires some internal wiring and sacrificing a pin on the Molex from >another function. Which then leaves the unit non-standard, and a >cable/controller from another repeater will be wrong. I would use pin >14. Least likely to cause a conflict. Also, you'll need the book to find >the right place to tap it. And watch out for the fact that the front >panel squelch is NOT the same as the squelch on the tone board!!! Mike WA6ILQ
