[VHFcontesting] Design for a 6M Rover Yagi...

[Eric Smith]

"As advertised" 10dB gain, 20dB f/b... and certainly fits the "easy build and set-up" considerations... and with the right materials used can make an extremely durable antenna or "build it out of junk"... It is inherently a strong antenna mechanically...  

Certainly worthy of consideration... Might want to set up a "range" and measure the gain:)

Eric
KB7DQH

--- dm5957 at gmail.com wrote:

From: David Muller <dm5957 at gmail.com>
To: VHFcontesting at contesting.com
Subject: Re: [VHFcontesting] Design for a 6M Rover Yagi...
Date: Wed, 3 Aug 2011 15:55:19 -0400

I found that supporting the Mini Horse antenna designed by SM0DTK  
http://hem.passagen.se/sm0dtk/
on two crossed and bowed 8-foot wood strips, set in plywood blocks,
I could fit the folded wire 6 meter, 3 el beam in a 4' x 7' rectangle--just fine for roving.
That's only a little deeper than the Moxon I have used.

I use vinyl tubing slipped over the ends of the strips to anchor the corners.  Releasing
two corners, I can swing the strips parallel for easy transport if I want to take the antenna down.
So far, although it looks fragile, it has handled 55 mph on country roads, and an encounter
with a tree branch mere slipped off a corner tube, no damage.

Cut to design dimensions, I get nearly flat SWR and wide bandwidth.  Haven't measured the gain,
but it seems respectable.  While its only 3 elements, its ready to go without any set-up.
For some rovers, it might fit the need.

73,

David AB2YI
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