[TowerTalk] resonance/swr/impedance plots

[Guy Olinger, K2AV]

You will hear people talk like that and everyone knows that they mean to
tune the antenna's feedpoint impedance for purposes of matching a
feedline. Some people will say self-resonant to underscore that they
really mean resonance, not tuneability.

It doesn't matter whether a lumped constant is at the feedpoint or up
the whip, a 10 foot whip is not [self-]resonant on 75 meters. You CAN
use various tuning devices to force power into it at the ridiculously
high current levels involved. A sixty-something foot long whip is
[self-]resonant. A tuned up 10 foot whip on 75 has the APPEARANCE of
resonance. But it has FEW of the ADVANTAGES of resonance, like
efficiency and bandwidth.

--... ...--  . ...  --.  .-..

Regards, Guy
Apex, NC


----- Original Message -----
From: <K3BU@aol.com>
To: <towertalk@contesting.com>
Sent: Wednesday, November 29, 2000 11:54 AM
Subject: Re: [TowerTalk] resonance/swr/impedance plots


> In a message dated 11/29/2000 10:32:05 AM Eastern Standard Time,
> k2av@contesting.com writes:
>
> > The antenna is NOT resonant, as you point out, but it's BETTER. The
> >  numbers may be too long for resonance, but right on for a simple,
> >  well-designed antenna.
>
>
> Huh?
> Doesn't the series capacitor re-resonate the antenna, just like coil
does in
> electrically shorter one?
>
> Yuri, K3BU
>
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>


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