[Moon-net] Square septum feed [5760] question:

[Darrell]

Hi Stephen & Group;

Use Google and look for RA3AQ's Optimized Septum Feed for 0.39 to 
0.45 f/D.......this is supposed to be one of the Best....if not the 
best approach.
It actually uses 2 Circular section at the Feed portion of the WG. 
perhaps a bit more complex to assemble but may very well be worth it.

I can E-mail it to you if you wish???

Regards & GL, Darrell

At 04:34 AM 7/24/2007, Julie & Stephen wrote:
>Help required please,
>
>With the OK1DFC square septum feed [which I have just built for 
>5760] could I ask for expert advice on the best solution for either 
>VE4MA original / Super or Chaparral ring to best illuminate dish. 
>The dish is F/D 0.42 and 2.4M solid.
>
>The reason why I ask this is papers from DUBUS and related articles 
>tend to look towards circular guide with septum / others and not 
>exactly specific on square guide with septum. I like the look of the 
>Super VE4MA ring and I have the details but these only relate to 
>circular guide. Or is there no difference between circular and 
>square guide in reference to 0.60 wave length in width. But with 
>circular and square these are maybe different in circumference.
>
>Best choice and ring diameter dimensions are only required for 
>square OK1DFC septum. I can build anything but I would rather build 
>it only once.
>Regards,
>Steve ZL1TPH
>
>
>
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