[TowerTalk] Inv L Directivity
    Craig Clark 
    jcclark at wildblue.net
       
    Fri Aug 31 13:33:58 EDT 2007
    
    
  
>    8. Re: Topband: INV L Directionality
>
G3XAP wrote a number of articles in RadCom (RSGB magazine) about this 
question.
December 1973 p 842 "160m dx from suburban sites"
November 1977 p 858 "The G3XAP directional antenna from the 
lower                               frequencies"
Ashton's conclusion was there is enhanced radiation in the direction 
of the top loading wire. His antenna used a 40-60' vertical element 
and a 130' top loading wire. To get omni-directional performance, he 
added more top loading wires.
73, Craig Clark, K1QX
RADIOWARE AND RADIO BOOKSTORE
PO  BOX 209
RINDGE NH 03461
603 899 6957
WWW.RADIO-WARE.COM
    
    
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