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Re: Topband: 2 wire reversible Beverage- KF4ITA Mikek

To: Artek Manuals <Manuals@artekmanuals.com>
Subject: Re: Topband: 2 wire reversible Beverage- KF4ITA Mikek
From: Mike Waters <mikewate@gmail.com>
Date: Sat, 9 May 2020 19:16:03 -0500
List-post: <mailto:topband@contesting.com>
Exactly, Dave! It's right in my Beverage antenna page ("145 ohms"), along
with several different calculators. :-)

And all WD-1* wire is *not* the same. Back when I used to sell Beverage
transformers, people would send me short samples to measure before I wound
them. You have to accurately measure the spacing and wire diameters to
determine that, unless you have a long enough piece of it to use an antenna
analyzer (preferred).

The 6.25:1 is okay for the feed end, but NOT the reflection transformer. I
corrected that on the former w0btu.com, but the archived page implies
otherwise.

73, Mike
W0BTU

On Sat, May 9, 2020, 6:52 PM Artek Manuals <Manuals@artekmanuals.com> wrote:

> More like 150 ohms as I recall
>
> Dave
> NR1DX
>
> On 5/9/2020 7:34 PM, Mike Waters wrote:
> > Fred, those transformers are the wrong impedance ratio for WD1! They are
> > for 420-450 ohm wire. WD-1 has a much lower impedance.
> >
>
>
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