[TowerTalk] question about shunt feeds

Maurizio Panicara i4jmy@iol.it
Thu, 17 Aug 2000 15:32:38 +0200


Adding an extention above a large capacitive loading hat hasn't a great
meaning unless when used as a resonance fine tuning. (other "fine tuning"
methods are generally more confortably obtainable without climbing on)
When a capacitive loading is moved down the antenna voltage node the loading
effect is reduced and the resonance of the taller radiator obtained is not
necessarily lowered, at least until the extension above the hat is
consistent.

73,
Mauri I4JMY

----- Original Message -----
From: "Henry Heidtmann" <n4vhk@summitschool.com>
To: "towertalk" <towertalk@contesting.com>
Sent: Wednesday, August 16, 2000 9:09 PM
Subject: [TowerTalk] question about shunt feeds


>
> Will adding an extension of aluminum tube ABOVE the "loading" tribander
> on a shunt fed tower increase its total length, or will it be a marginal
> difference?
> I'd like to try this, but thought I'd ask here first to prevent wasting
> time-
> Thnkas in advance,
> Henry, N4VHK
>
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