The J-Pole antenna is herewith fixed

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For what it’s worth, the J antenna is now fixed.

Details available in these two patents…

It’s still just a J-pole at the end of that day, but hey, I got tired of reading and hearing about all the various myths surrounding this eight decade old design and decided to drive the myths into ground (pardon the pun) once and for all. So ends my obsession with this thing and hopefully a new future for this design.

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2 thoughts on “The J-Pole antenna is herewith fixed”

  1. What kind of fitting/adapter/wiring do you use to connect the coax to the pipe when running it inside like that? Given the tight confines, seems difficult to solder the wire on the inside of a 1/2" pipe without melting or damaging the cable, especially when using fatter coax.

    Also, as I understand the point of that bottom matching stub is to completely isolate the upper radiating section from the mast, since leaving the protruding bit of the T fitting on a typical J can cause problems, what it that bottom tip was just cut off flush? Then the profile would be a normal J without the protrusion, but you would still have a handy hole in the bottom to mount onto a non-conductive mast, like a wooden shaft or something.

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