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Re: [TowerTalk] 30m 3 ele parasitic vertical antenna

To: towertalk@contesting.com
Subject: Re: [TowerTalk] 30m 3 ele parasitic vertical antenna
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Mon, 16 Feb 2015 21:23:36 -0800
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On Mon,2/16/2015 9:01 PM, W0MU Mike Fatchett wrote:
Your feedback is appreciated.

Several thoughts. First, take a look at this tutorial presentation I've done for several ham clubs and at Pacificon.

http://k9yc.com/VertOrHorizontal-Slides.pdf

From my own experience, I can tell you that a 30M dipole at 70 ft ain't exactly chopped liver, although I just paid tree climbers put mine at 100 ft. Before that, I used one at 35 ft to work FT5ZM, halfway around the world. :)

Second, any vertical, array or not, will be quite dependent both on the quality of your soil.

Third, with the exception of a half wave radiator, any vertical array will be quite dependent on the quality of the radial system.

Fourth -- a 3-el vertical array is likely to give you no more than about 5 dB over a single vertical.

Fifth -- see the piece on my website about "should I put my HF vertical on my roof?"

73, Jim K9YC


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