Hi All. I am working on several Micor repeaters for use in Montana linking back to Tucson via the inter-net.
These are standard 75 watt complete Micor stations. My problem is with the built in circulator that is feed by the PA prior to the duplexer. I have tuned the circulator using both a signal generator and spectrum Analyzer and used the tracking generator method. I can not get the loss down below 1 db. Is this normal? Other single stage circulators I have used in the past have had less the 1/2 db loss. Any Ideas. I suspect the harmonic filter is the problem but have not tried to take on apart to see. Ralph, W7HSG
