[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


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