[TowerTalk] Balanced Feedline for Ground Mounted Vertical?

[Michael Tope]

Jim Brown wrote:

>On Mon, 25 May 2009 10:50:19 -0700, Richard (Rick) Karlquist wrote:
>
>  
>
>>Laport's book shows some unbalanced "open wire" line.
>>There are four wires in a square with a fifth wire
>>in the center.
>>    
>>
>
>Certainly. That's the unbalanced line I'm talking about. :) Many 
>(most?) AM broadcast facilities were built that way. I've also seen 
>some high power installations with multiple wires for the center 
>conductor. 
>
>73,
>
>Jim K9YC
>
>  
>
Would the feedline radiation really be any lower with the 5 wire "cage" 
configuration compared with a balanced two-wire line if there were an 
imbalance in the center conductor and return currents?

Mike W4EF.......................