If it were me, I'd suspect the LPF. Sweep it. Chuck WB2EDV
----- Original Message ----- From: Ralph S. Turk To: Repeater-Builder Cc: David Turk Sent: Thursday, January 29, 2009 11:36 AM Subject: [Repeater-Builder] Micor Repeater 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
