As I recall, an early ARRL VHF manual had a brief chapter on repeaters, and I believe there were two articles that were of interest. One was the duplexer and another was a four bay folded dipole antenna for repeater use. If you know where the four vertical bay antenna article is located, you may find the duplexer article also. I think it also was a QST article.
I remember one fellow who built the duplexer complained that when it was hit by lightning, it disassembled itself. He had made the outside tube out of individual sheets of copper soldered together, and the solder joints let go when it took the strike. 73 - Jim W5ZIT --- On Tue, 4/28/09, cruizzer77 <atlant...@gmx.ch> wrote: From: cruizzer77 <atlant...@gmx.ch> Subject: [Repeater-Builder] Re: W1GAN and square duplexers aka homebrew duplexer To: Repeater-Builder@yahoogroups.com Date: Tuesday, April 28, 2009, 5:18 AM It's interesting to hear about your projects! I would be interested in knowing which VHF manual you're referring to, Jim.