[TowerTalk] 80-40m 2 el Yagi redesign

[VE6WZ_Steve]

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.