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Re: Topband: Helically wound vert

To: <topband@contesting.com>
Subject: Re: Topband: Helically wound vert
From: "Roy" <royanjoy@ncn.net>
Date: Fri, 17 Jul 2009 11:28:58 -0500
List-post: <topband@contesting.com">mailto:topband@contesting.com>
"Radiation efficiency is around 60% on 40 meters, 20% on 80 meters, and 7% 
on
160 meters. For a 23' vertical this is not bad."


Over all system efficiency depends upon effective ground system resistance. 
Typically that would bring it to more like 2% on top band.

Roy,   K6XK


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