Hi Paul, I modified a non-unified chassis 5 years or so ago. I wanted to disable the tone during cw id, so I used a small reed relay and broke the pl audio right at the input on the exciter board. I believe all I did was to put one end of the relay to 12 volts and the other end to a diode or gate. I don't quite remember how it went all together. I'll see if I can find the documentation and let you know.
HTH Sean ve3hxp --- In Repeater-Builder@yahoogroups.com, N1BUG <p...@...> wrote: > > I'm guessing I am not the first to want to do this... > > I want to use a UHF Micor for a link. I want to be able to stop the > PL encode immediately when a user unkeys, but I want the controller > to be able to hold the transmitter up (without PL tone) for sending IDs. > > There appears to be no PL on/off gate on the TLN5731A encoder. The > only tone gate is Q703 which only gates the out of phase tone used > for reverse burst. > > Other than using a mechanical relay to interrupt the encoder tone > output, any suggestions? > > Thanks, > > Paul N1BUG >
