[Antennas] J-Pole antennas

[Idle-Tyme]

So,

This raises the question,

What is the correct way to feed one?
Joe WB9SBD

*The Original Rolling Ball Clock
http://www.idle-tyme.com*



C.Whitaker wrote:
> de WB2CPN
> The VHF J-Pole design came about prior to WWII, and was
> used by US Army in the 100 - 156 MHz range.   It was  used
> on HF years before that, but wasn't called a J-Pole.   It was
> called a Zeppelin because that's what it was used on.  It kept
> the high RF voltages away from the airship.  TRIVIA:  There
> have been so many  ideas on what a J-Pole is supposed to
> look like that there is no "Right or Wrong" any more.  Now
> days they are made to look like miniature Zepps that are
> incorrectly fed part way down the 1/4 wave section.  A well
> designed J-Pole shouldn't need a choke balun at the bottom,
> but the ones made these days do, because of the improper
> method of feed.  A highly inflaming subject, we're in here.
> End of Trivia.
> 73  Clete
>
>
>
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