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For that alone i salute you Donald, very few businessmen would be willing to share information of that nature for the obvious reason it can be easily ripped off and plagerised by the unscrupulous, but never ever think some of us don't appreciate the expertise you and those in manufacturing you do personal business with have offered us, no other manufacturer that i know of has ever gave the hobbyist such insight into such technically hard to understand material as you and lorenzo have recently provided.


in a cut throat business world sharing information like this is very very rare.

 i disagree with sirio on the "j pole" discription, but as you correctly say the word coaxial preceeding it makes one hell of a difference, as the word coaxial basically describes what the basket is, if i'm not mistaken the basket around the radiator imitates the way coaxial cable works,ideally cancellation on the inside, but cleverly manipulating a kind of cmc effect radiation (albeit not exactly the same) on the outside of the basket to add to the farfield gain.


in much the same way as common mode current on a coaxial cable CAN be beneficial to certain antenna designs whilst at the same time being very destructive to other designs.



keep it coming as i just love to read your posts,