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Topband: 2 phased verticals on 160

To: topband@contesting.com
Subject: Topband: 2 phased verticals on 160
From: karvkari karvkari <kari.karvonen@phnet.fi>
Date: Sat, 03 Jul 2010 22:50:25 +0300
List-post: <topband@contesting.com">mailto:topband@contesting.com>
Hello

When using hybrid coupler or Lawallen circuit with 2 verticals, where 
individual elements have to be tuned if system should resonate on 1.83. I mean 
just on 1,83 or a bit up or down.

73 Kari OH5LF

PS Now one elements is ready with "top"loading coil at 23 m, total higth is 
28,7 m and it resonates 1,805, bandwidth is 60 kHz < swr2
On resonance R=43 ohm, X=0. It seems that I have to shorten a bit the coil. 




        
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