If you are talking about a "flat pak" duplexer, they are easy. Hook a receiver (or scope) to the "high" side and set the monitor frequency to the "low" frequency. Inject the "high" freqency into the antenna port. Tune for the deepest null.
Then hook the monitor to the "low" side set for the "high" frequency and inject the high frequency, and again, tune for the deepest null. You will have to keep readjusting your signal generator. It helps to inject the 1000Hz tone if you are doing it "by ear". Scott NA4IT --- In Repeater-Builder@yahoogroups.com, "fxbuilder" <[EMAIL PROTECTED]> wrote: > > There is a great article on this site about tuning a notch duplexer by > Kevin. Can similar methods be used for tuning a mobile 6 can band > pass duplexer? Is there an article that I missed that explains it as > easily? I need to re-tune and could use the help. I think I know how > but thought I'd check. > Craig >
