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Re: [TowerTalk] 80m 4Square Dipole VSWR question

To: "Tom Rauch" <>, "Yo3ctk" <>,"Paul Playford" <>,"'D. Rodman, MD'" <>,"'towertalk'" <>
Subject: Re: [TowerTalk] 80m 4Square Dipole VSWR question
From: "Jim Lux" <>
Date: Thu, 18 Nov 2004 06:47:24 -0800
List-post: <>
> Maybe someone has characterized the Comtek box, and knows
> what port terminations it likes to see. Whatever it is, it
> probably is not the uncoupled impedance of the elements
> transformed by the 1/4 wl cable.

Bringing up a question in the back of my mind...

This is a pretty easy theoretical analysis.  Does anyone have the component
values in the Comtek box?  (especially a rough idea of the parasitics and Q
for the reactive components). Or, even more useful, some port to port S
parameter  measurements for the 6 ports?

I have a program that will do most of the analysis for useful cases,
including looking at the effects of non-ideal radiating elements (and

Jim, W6RMK


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