One could point out that placing a small inductance to ground in series with
the ungrounded radiator and feeding the junction of the two is quite similar
to tapping up the grounded radiating element to attain a match.
Practically speaking, people have been using 1/4 wave whips on vehicles and
g
poses.
WA9ZZU
--- On Wed, 2/24/10, Al Wolfe wrote:
From: Al Wolfe
Subject: [Repeater-Builder] Re: Ground plane yada yada
To: Repeater-Builder@yahoogroups.com
Date: Wednesday, February 24, 2010, 9:27 AM
Actually, the information presented in the QST article was in reference to
the prac
Actually, the information presented in the QST article was in reference to
the practical feeding of the driven element of yagi type antennae where the
normal feedpoint impedance can be quite low and may well be in the range of
8 to 15 ohms. So raising the impedance from 36 to 50 ohms with this m
> allan crites wrote:
> I appreciate the contribution of the information found in
> the ARRL April 1962 QST article, which I have reviewed,
> and the technical parameters of impedance matching provided,
> however the information presented relates to the shortening
> of a 1/2 WL simple dipole
-Builder] Re: Ground plane yada yada
To: Repeater-Builder@yahoogroups.com
Date: Tuesday, February 23, 2010, 3:57 PM
> "Al Wolfe" wrote:
>
> The straight skinny about the "beta" or "hairpin" match
> can be found in a QST article, April 1962, by Gooch and
> "Al Wolfe" wrote:
>
> The straight skinny about the "beta" or "hairpin" match
> can be found in a QST article, April 1962, by Gooch and
> Gardiner. It explains how this matching scheme works. The
> driven element is shortened making it capacitive.
> Then the inductive reactance of the hairp
The straight skinny about the "beta" or "hairpin" match can be found in
a QST article, April 1962, by Gooch and Gardiner. It explains how this
matching scheme works. The driven element is shortened making it capacitive.
Then the inductive reactance of the hairpin or beta section re-resonates
7 matches
Mail list logo
