I think their original design used paint cans for the chambers, but then went to copper when they couldn't solder easily to the steel.
http://members.cox.net/xsamo/r150.htm http://members.cox.net/xsamo/01duplex.htm http://k5jmp.us/Six_Meter_Heliax_and_Helical_Duplexer_info/01duplex.PDF On Thu, Oct 29, 2009 at 10:55 AM, cruizzer77 <atlant...@gmx.ch> wrote: > We're going to build a 6m repeater in a place where space is very limited, > which means that building a full-size cavity duplexer is not an option. > > Of course there's the heliax duplexer, but I would also like to evaluate > other possibilities, i.e. the helical duplexer or even a hybrid ring duplexer > with helical resonators. > > I have got some theoretical info about them, but very few info about actual > built units. > > Has anyone (successfully or not) built a helical or hybrid ring duplexer for > 6m? Any info appreciated! > > 73 > Martin > > > > ------------------------------------ > > > > Yahoo! Groups Links > > > >
