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Re: [TowerTalk] Carolina Windom, etc.

To: Gary Schafer <>,
Subject: Re: [TowerTalk] Carolina Windom, etc.
From: Jim Jarvis <>
Date: Fri, 07 Sep 2007 23:09:34 -0400
List-post: <>
Well, yes, Gary, that's true.

But suppose it's 1.2:1?  is that because it's 1.2:1 at the
antenna, or because whatever wierd impedance is presented at the 
feedpoint is transformed to something close to r50 j0?  


-----Original Message-----
From: Gary Schafer []
Sent: Friday, September 07, 2007 11:00 PM
To: 'Jim Jarvis';;
Subject: RE: [TowerTalk] Carolina Windom, etc.

> A half wave, more or less in the clear, will radiate
> just fine.  What you measure as vswr at the shack end of
> the feedline reflects impedance transformation in the
> transmission line.  Seeing 1:1 at the end of 500' of line
> doesn't tell you a damned thing about the antenna match,
> or system loss.  Nor does 8:1, although that surely raises
> questions about what's wrong.

Seeing 1:1 swr at the shack means that the swr at the antenna is also 1:1
(provided you don't have excessive feedline loss). Swr will be the same
anywhere on the line.

Gary  K4FMX


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