[TowerTalk] Elements of a yagi

[David Gilbert]

I'm pretty certain you are correct, but I question whether the effect 
would be significant.  In any case it would be pretty easy to check with 
EZNEC+.   Just model two stacked identical yagis and shift the 
coordinates of one of them forward or backward.

73,
Dave   AB7E



On 2/3/2017 10:58 AM, Bill Conwell wrote:
> Is it a fair assumption that dissimilar yagis (e.g., Ed's 15m Telrex and M2)
> can be phased (e.g., in a vertical 2-stack) by mounting the yagis so their
> driven elements are vertically aligned?  I have an impression that it isn't
> necessarily so - that the apparent phase center, if you will, for a yagi is
> influenced by the coupling between the DE and other yagi elements.  Thus,
> for example, a point 10 wavelengths out horizontally from a yagi's DE won't
> necessarily be in phase with the DE feed point.
>
>   
>
> /Bill, K2PO
>
>   
>
>   
>
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