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Zdenek, OK1DFC gave a presentation at the Prague 2002 EME convention.He discussed a new design feed horn, the septum feed. The mechanics of this feed are relatively simple, so I decided to "roll my own", and do some testing with it on the network analyzer.

As a reference I am using a short style VE4MA feed, no choke plate, and a commercial hybrid coupler. This is my reference horn, where I am pretty sure of the circularity being good.

 HUT_006.jpg (50298 bytes)        

 septum_016.jpg (62599 bytes)

 septum_005.jpg (38212 bytes)      

septum_004.jpg (42407 bytes)     

               

 
 

 

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