Ken and all -
As a matter of interest, the W.W.II wideband, high power balun built into
the hairpin is used on the (current production) 2D-series of antennas mfg.
by CAL-AV. See www.cal-av.com/antennas.html
73,
Ken
----- Original Message -----
From: <K7GCO@aol.com>
To: <towertalk@contesting.com>; <longterm@chatusa.com>
Sent: Wednesday, October 10, 2001 9:11 PM
Subject: Re: [TowerTalk] [Tower Talk] 10 to 25 ohm feed.
>
> In a message dated 10/10/01 5:12:23 PM Pacific Daylight Time,
> longterm@chatusa.com writes:
>
> << Can you feed a yagi efficiently with a feed impedance of 10 to 25
ohm.
> What is the best way type of feed. T match or what ever?
>
> NN7J
> >>
> A T Match needs a balun unless it's done like an Antenna Mfg on the West
> coast did. It worked great. I think they were called Pro Antenna or
> something like that. The Clements Match works great and doesn't require a
> balun either. It can be adjusted or balanced so there is no RF Spill Over
> either. A hair pin match can be fed without a balun by running the coax
up
> the center of one side and running the center lead across. This was
widely
> shown in WWII Antenna Manuals. Hy Gain for some reason didn't use it but
> some ham had an article in QST showing how to do it on a tribander without
> upsetting balance. k7gco
>
> List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
> Trylon Titan towers, coax, hardline and more. Also check out our self
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>
> -----
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>
>
List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
Trylon Titan towers, coax, hardline and more. Also check out our self
supporting towers up to 100 feet for under $1500!! http://www.anwireless.com
-----
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