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Re: Topband: Automatic Switching on 80/160 Vertical

To: "Tom Rauch" <w8ji@contesting.com>,"Chortek, Robert L" <rlc@berliner.com>, <topband@contesting.com>
Subject: Re: Topband: Automatic Switching on 80/160 Vertical
From: "DAVID CUTHBERT" <DAVIDNNAN@MSN.COM>
Date: Wed, 2 Mar 2005 20:08:06 -0700
List-post: <mailto:topband@contesting.com>
Tom Rauch said:


You could use a complex trap like Butternut uses (which
would have higher efficiency with a coil, rather than a
distributed inductor like a linear loading stub), but I'd be
more inclined to just use a regular trap at the right
spot....maybe right below a capacitance hat.

Dave says: 

Tom has a great idea! This would provide full performance on 80 and the best 
performance from a 66' vertical on 160 meters. Automatic band switching and 
great performance. Robert, If this sounds good I will be glad to calculate a 
suitable trap/top hat for you. But if you still want the linear loading I will 
calculate a suitable Butternut-style cap and linear loading that will do the 
job.

   Dave WX7G

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