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.




         
        
        








        


        
        


      

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