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[TowerTalk] 80-40m 2 el Yagi redesign

To: towertalk@contesting.com
Subject: [TowerTalk] 80-40m 2 el Yagi redesign
From: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Mon, 4 Mar 2019 18:40:08 -0700
List-post: <mailto:towertalk@contesting.com>
The short, inductor loaded homebrew 80-40m Yagi has been in service at VE6WZ 
for 17 years.

This summer I redesigned the feed system to allow for instant 180 deg direction 
switching.  This system was inspired by my friend Peter HA8RM.

I have written a paper that explains the 4nec2 modelling, electrical design of 
the switching system and lumped LC matching.  It also explains how the Yagi can 
be tuned easily and with confidence using just an antenna analyser.
At the end of the paper I include a link to a YouTube video I made that 
discusses some aspects of the Yagi design in more detail.

Since 2002 I have had a webpage online that shows construction notes and detail 
of the Yagi. I have had over 54,000 hits and numerous emails and questions 
about the antenna. I hope this paper and video will provide an update to the 
design and show how the new feed design makes tuning the Yagi much simpler.

https://drive.google.com/drive/my-drive 
<https://drive.google.com/drive/my-drive>


73, de steve ve6wz.
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