[TowerTalk] Measuring resonance of a yagi element

[Grant Saviers]

Good point.  Modeling Yagis and optimizing with Auto-EZ is instructive 
in how much one change changes a lot else.  Watching the automatic 
optimizer try to find the several dimensions of target values shows 
this.  Having designed a two band interlaced 30/17m I gained enormous 
respect for those designers with proven performance multi-band designs. 
A lot of hours at the PC.  Plus I wonder about how designers got it 
right in the "old days".  My solution to the mount modeling problem is 
all insulated elements.

Grant KZ1W

On 4/22/2020 06:38, Chuck Dietz wrote:
> Hi Tom,
> I don't think you are taking the right approach. I don't think you can just
> "tune" one element of a Yagi antenna. You need to measure all the element
> sections and placements including the element mounts and run them through a
> computer design program. Changing any dimension will affect the other
> dimensions to some degree. If it is a commercially sold Yagi, the file will
> already be available and can be used to optimize the antenna.
> 
> Chuck W5PR
>