[TowerTalk] JK C3S WARC Modifications

john at kk9a.com john at kk9a.com
Thu Nov 28 19:36:15 EST 2019


You can also optimize and put levels of importance for SWR, Gain and  
F/B with EZNEC if you have AutoEZ. I have played a little with AutoEZ  
and find it to be a great tool. There is no reason to ignore SWR.  All  
of my monobanders had flat SWR and excellent gain. The C3S has only  
one element that is physically connected to the coax, I believe it's  
the 20m DE. It is not clear if KV4FZ wants a three band beam or 2 band  
WARC beam with no 20m. You would have to optimize this for each band  
being used and changing something on one band effects the other bands  
so I could see this getting a little tricky.

John  KK9A


jimlux wrote

On 11/28/19 1:14 PM, Jim Brown wrote:
> On 11/28/2019 10:23 AM, jimlux wrote:
>> This is an excellent use for a modeling code and an optimizer.
>
> And remember that SWR is NOT a measure of antenna performance --  
> GAIN and PATTERN are what matters.

yep, 4nec2 will let you set forward gain and/or F/R, F/B as the
optimizable quantity - I suspect all the others will too.



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