[TowerTalk] PAN CAKE ANTENNA -TAK-ANTENNA

[Chris Adams]

David and others,

Would you be so kind to point me to the review(s) on e-ham.  I can find very little about this antenna despite searching on the term "Pan Cake-Antenna" on eham and google.  It seem I'm the only one that isn't familiar with the antenna.  I did download N3OX's EZNEC model so I understand what it is.

Here are some links to another spiral loaded vertical type antenna.  It's implementation is only single band.  

http://www.arising.com.au/people/Holland/Ralph/spiralld.htm

http://www.arising.com.au/people/Holland/Ralph/shortvert.htm

Ralph wrote a much more user friendly article for antennex.com with pictures.  I modified the antenna in the antennex.com article from vertical to a dipole and was quite pleased with it.  I used it when our family moved to a condo while our house was remodelled.  However, it was only single band (40m in my case).  I have some pictures somewhere, I'll see if I can find them.

73

Chris, n4vi
-------------- Original message -------------- 
From: "David Jordan" <wa3gin at comcast.net> 

> Hi Folks, 
> 
> 
> 
> Looking for comments regarding questions about the Pan Cake dipole antenna: 
> 
> 
> 
> What is the theory behind the antenna configuration? 
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> Has anyone attempted to model the antenna? 
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> What is the expected input impedance at resonance? 
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> Is there a difference between actual and advertised SWR 2:1 bandwidth? 
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> Has anyone confirmed SWR bandwidth claimed versus actual? 
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> Is there a defined radiation pattern or is it just a BLOB pattern? 
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> 73, 
> 
> Dave 
> 
> Wa3gin 
> 
> 
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> _______________________________________________ 
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> 
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