thanks Jim now I understand,   hihihihi  !!!
Bob
K6UJ
On Jul 12, 2012, at 1:57 PM, Jim Hoge wrote:
> No, no, no. A spherical radiator is a true isotropic radiator until it is 
> affected by its relationship to ground, other structures, the mast upon which 
> it sits, and its feedline. The trick is to be able to accurately model these 
> relationships. This is where the value of multiple unknown variables will 
> always be indeterminate with the only constant being Murphy. It is best 
> understood as AE=BL/WL where AE represents antenna efficiency, WL  represents 
> will load, and BL represents blind luck. It's really a simple ratio 
> understood not by mere mortals but rather the antenna gods, and they're not 
> talking.
> 
> 73,
> Jim W5QM
>  
> When in doubt, experiment!
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