In article ,
Wes Stewart wrote:

But he says, "However, since the currents on either side of the
feedpoint are not balanced, a choke balun is mandatory to suppress
unwanted currents on the feedline."

Whups, you're right. I though that this particular section of his
text was referring to the standard J-pole, but in re-reading it I see
that it's referring to the nonstandard/open-sleeve version.

Cebik's model would need to be modified somewhat apply to the Arrow
open-sleeve J-pole, as the Arrow is fed at the very base of the one
element rather than halfway between the two.

That's how I modeled it, although it makes very little difference in
the results.

Since it's only an inch or so, that makes good sense.

Anybody care to model up the Arrow, with all three elements included,
with and without a separate wire representing the outside of the coax?

Done, before you asked.[g]

That's what the Howard/Fine/Howard team used to call "Super Service!"

:-)

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Dave Platt AE6EO
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