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Re: Topband: Comparing antennas was: Re: 160m loaded tower

To: <topband@contesting.com>
Subject: Re: Topband: Comparing antennas was: Re: 160m loaded tower
From: "James Wolf" <jbwolf@comcast.net>
Date: Wed, 18 Jan 2023 14:19:45 -0500
List-post: <mailto:topband@contesting.com>
It's quite possible that the addition of a beam at 60 ft. could cause capacity 
hat effect changing the current flow in the tower.  It might be worth modeling 
this.

Jim - KR9U 

>> I have a 100 ft tower with jk mid tri 40 on top. When shunt fed, it 
>> was pretty competitive on 160. Recently the antenna seems to be a few 
>> db weaker. The only change was adding another beam at 60ft. Could it 
>> have had an impact? Adding the beam only marginally affected the match.

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