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The so239 is not the end of your feed-line nor the feed-point nor the place where return currents enter the inside surface of the coax & kirchhoff does his balancing act like most other end-fed antennas,

on the a99 & imax that place is at the end of the feed-line/coax proper, near the top of the tube where it connects to the matching network some distance from the so239 which is no more than a convenient place to connect your coaxial feed-line extension.

[QUOTE="bob85, post: 608558, member: 18"] The so239 is not the end of your feed-line nor the feed-point nor the place where return currents enter the inside surface of the coax & kirchhoff does his balancing act like most other end-fed antennas, on the a99 & imax that place is at the end of the feed-line/coax proper, near the top of the tube where it connects to the matching network some distance from the so239 which is no more than a convenient place to connect your coaxial feed-line extension. [/QUOTE]

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