I had to do the same thing with my Mototrbo Repeater. I needed a PTT sense line from it, and since Motorola does not have the repeaters rear accessory connector pin for PTT enabled yet, I too had to use an optoisolator in parallel with one of it's front panel LED's. I have two repeaters on the same frequency pair and within the same cabinet (one Analog, and one Mototrbo). When the Mototrbo repeater keys up, it disables the Analog repeater, so on my system, Digital has priority (if you have capture of the Mototrbo receiver that is).
The optoisolator worked like a charm. Have Fun ! Paul Metzger K6EH The Digital Voice Amateur Radio Association Hollywood Hills 445.660- 156.7 http://www.hamradio-dv.org ----------------------------------------------------- On Sep 6, 2007, at 08:41, Henry Wingate wrote: > Perhaps an optoisolator in series with the LED. > > >> Ray Rosler wrote: >> >>> ----- Original Message ----- From: Ray Rosler To: Repeater-Builder >>> Moderator Sent: Wednesday, September 05, 2007 7:20 AM Subject: KDK >>> UHF 7033 >>> >>> >>> Good morning. I am going to try and make this unit into a link radio >>> and I am in need to know just where to pick off the COS signal. The >>> controller being used will be a cat-400. I have found that the >>> receive led goes high when squelch is opened, but the level is to >>> low >>> to be of any use. any suggestions... >>> >>> Ray VE5RAE >>> >>> >> >> > > > > > > > Yahoo! Groups Links > > >
