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Re: Topband: Looking to improve TX antenna Efficiency

To: "Steven Raas" <sjraas@gmail.com>
Subject: Re: Topband: Looking to improve TX antenna Efficiency
From: "Rick Karlquist" <richard@karlquist.com>
Reply-to: richard@karlquist.com
Date: Tue, 20 Nov 2012 11:45:03 -0800
List-post: <topband@contesting.com">mailto:topband@contesting.com>
Steven Raas wrote:

> Main Element: 32 feet vertical - 90 deg bend ( the 'L' ) which runs
> 43' horzontally pointing north. Then, another 90 deg bend, and
> ascending 26' in length ( from 30' up to about 11' above ground
> running from west to east. ), then..you guessed it.. another 90 deg
> bend that now runs to the south flat top for 27' ( @ 11' up )

This type of question is hard to answer because we don't know
what you are able to do.  If you are able to do it, I would
suggest changing from an inverted L to a T top loaded vertical.
This suppresses useless horizontally polarized waves and improves
the efficiency in terms of what is heard at the receiving end.
You may still need a coil at the base to achieve resonance if
can't put out long enough top loading wires.  That's OK.

Rick N6RK

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