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Re: [TowerTalk] Four Square Array: effect of placing tower with yagi etc

Subject: Re: [TowerTalk] Four Square Array: effect of placing tower with yagi etc in c...
Date: Fri, 10 Dec 2010 07:32:16 EST
List-post: <">>
Hi Barry, I have no actual experience with this but common sense says that  
the answer depends entirely on the resonant frequency of the central  
If it is resonant at 1.825 MHz, there just HAS to be a big effect on the  
four square pattern and vswr characteristics.
But, as you probably know, there are simple and effective methods of  
detuning the central structure as described by W8JI.
Or, if the central structure was purposely made to be part of the  
directional array, as in the driven element, the issue might be  irrelevant.
Very interesting question and worthy of following answers here!
Gerald K5GW
In a message dated 12/10/2010 6:08:11 A.M. Central Standard Time, writes:

Hi  all:
Would be grateful for any opinions, experience, modeling exercises etc  on
effect of placing a typical lattice tower with yagi on top in middle of  the
four verticals making a four square vertical array for 160m.
Good  idea? Bad idea? Are characteristics of tower critical?
Tnx es 73
Barry  ZL1DD

Barry Kirkwood PhD  ZL1DD
NZ: 021 160 8999
Thailand 081 235  1556

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