[Elecraft] WB#AAL's Butternut HF9V Project

[Andrew Catanzaro]

Ron,

If you are going to watch a parameter as you implement more radials,
look at radiation resistance, not SWR.  The ideal (resonant) 1/4 wave 
vertical
has a resistance of 34 ohms, which will give you an SWR of about 1.5:1.
If you just look at SWR and shoot for 1:1, you won't know that your antenna
is at maximum efficiency and not warming up the earth.  If you just look for 
an
SWR of 1.5:1, you won't know that your vertical is on the right side of 34 
ohms.
With enough radials, your SWR will be higher than 1:1 and you can easily 
tune that
out.

73,
Andy W9NJY
Milwaukee, WI

Ron said:


Date: Tue, 28 Sep 2004 21:13:51 -0400
From: "Ron Polityka" <wb3aal at verizon.net>
Subject: [Elecraft] WB3AAL's Butternut HF9V Project
To: ".Elecraft" <elecraft at mailman.qth.net>
Message-ID: <045f01c4a5c1$9627d300$0200a8c0 at WB3AAL>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";
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Hello,

 Since I moved back in June I have been working on my antenna in my limited
spare time.

I am installing a ground mounted Butternut HF9V and I am doing extensive SWR
testing.

If you are interested, please follow along at

www.wb3aal.com and click on HF9V Project.

I currently have eight 60' long radial at the moment. I plan on installing a
total of 40 radials. After I install every 8 radials I am going to take SWR
readings.

Check it out!!

72 and Thanks,
Ron Polityka
WB3AAL
www.wb3aal.com
www.n3epa.org/