Definitions: Circulator - ferrite device with 3 ports. Isolator - Circulator with a load on the 3rd port. Intermod panel - Isolator with a harmonic filter. The harmonic filter may consist of a 2nd harmonic notch filter or a low pass filter or a band pass cavity.
73 Gary K4FMX > -----Original Message----- > From: Repeater-Builder@yahoogroups.com [mailto:Repeater- > buil...@yahoogroups.com] On Behalf Of Paul Kelley N1BUG > Sent: Monday, July 20, 2009 6:16 AM > To: Repeater-Builder@yahoogroups.com > Subject: [Repeater-Builder] Isolator vs intermod panel? > > I guess I was lucky in my first few years as a repeater owner. > Lately I have nothing but grief in many forms. (Yeah I know, welcome > to the real world!) > > Can someone tell me in basic terms what is the difference between an > isolator and an intermod suppression panel which contains an isolator? > > If one has a high power tube PA on a repeater, I assume he would > need to use a high power isolator or intermod panel after the PA? Or > would it be sufficient to use a lower power one between the solid > state exciter and tube PA? > > Thanks... > > Paul N1BUG > > > > ------------------------------------ > > > > Yahoo! Groups Links > > >
