sorry but the file format got messed up
73 Pete N4KW
----- Original Message -----
From: "Pete Raymond" <n4kw@infionline.net>
To: <towertalk@contesting.com>
Sent: Sunday, February 18, 2007 3:08 PM
Subject: modeling insulated DE using YO
>I have been attempting to model an insulated driven element (DE) for a 5el
>Yagi using YO, and not sure if I am using the correct procedure. The YO
>manual does not address an insulated driven element. I am converting from
>a "T" Match to a Hairpin Match and thus the insulated DE. I am getting
>conflicting results for the shorting arm distance which leads me to
>wondering if there is a problem with my procedure or the software.
>
> After developing the taper schedule for the antenna elements, in the DE
> line I place a 0 (zero) in the column under the correction factor used for
> the mounting plate that is used for the remaining elements.
> The DE line now looks like this
> 1.9000 1.2500 1.0000 0.7500 0.500
> 87.945 0.0 30.000 57.000 57.000 60.600
>
> I used a zero as the mounting plate is not taken into account since the DE
> is insulated from the boom.
>
> Is this the correct method to use when modeling an insulated DE.
>
> 73 Pete N4KW
>
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