While I cannot answer your "will it work" question, I can add an observation.
I built a heliax duplexer for 6-meters as well. It worked. However, it was extremely touchy as far as staying in tune, and mechanical vibration was part of the problem in keeping it in tune. I am certain that transporting them (in my case) would have resulted in them being unusable after the trip. That said, I have seen some variations to the design that may result in increased mechanical stability. For me the coax capacitor was real prone to movement. Chuck WB2EDV ----- Original Message ----- From: "Ed" <[email protected]> To: <[email protected]> Sent: Thursday, October 22, 2009 10:17 AM Subject: [Repeater-Builder] 2 meter Heliax Duplexers. Anybody try? > > Gentlemen > > I am brainstorming about constructing a portable - temp use - Pelican Case > portable 2m repeater using the 6 meter Heliax duplexer concept. > > I had built a 6m duplexer for .5 mhz split using this method 12 years ago > and it worked quite well. > > I have built a single cavity 2m notch filter for APRS use, so I believe > the concept can work. > > Has anybody tried building a 2m duplexer using this method that would do a > 600khz split? > > Advice, suggestions? > > 73 > > Ed N3SDO > >
