[TowerTalk] EZNEC

[Paul Christensen]

For initial learning purposes, I think it's best to leave out the ground 
dependencies.

> "I just downloaded EZNEC and am not good with it at all."

>From that, I gathered he was just starting out with no prior experience. 
That's why the EZNEC "backyard dipole" example (in free space) is a great 
learning tool.  After that, place the dipole above real ground at say...30 
feet.  *Then* move on to verticals.

Anyone jumping right in to the antenna they have in mind in order to learn 
NEC is going to get discouraged quickly.  That happened to me and I didn't 
re-open NEC for several years.  Had I just started with a ground-independent 
antenna and experimented with changes in frequency and dipole length to get 
a feel for complex  Z changes, that would have given me a 5+ year head 
start.

Paul, W9AC


----- Original Message ----- 
From: <john at kk9a.com>
To: <towertalk at contesting.com>
Sent: Thursday, April 18, 2013 1:41 PM
Subject: Re: [TowerTalk] EZNEC


>I agree that a vertical dipole is a poor antenna, however he said "with a
> center vertical dipole"
> http://lists.contesting.com/archives//html/Towertalk/2013-04/msg00186.html
> . If he has a high enough support for a vertical dipole array, he is
> probably better of with a horizontal wire beam, but that was not his
> question.
>
>
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] EZNEC
> From: Jim Brown <jim at audiosystemsgroup.com>
> Reply-to: jim at audiosystemsgroup.com
> Date: Thu, 18 Apr 2013 09:38:57 -0700
>
>
> On 4/18/2013 9:33 AM, john at kk9a.com wrote:
> I would start with modeling a single vertical dipole.
>
> Actually, a simple quarter wave vertical is much easier to model, and is
> close to what he wants to build. And there's am example model of it with
> the simple version of EZNEC that comes on the CD with the ARRL Antenna
> Book. Besides -- vertical dipoles are not great antennas because their
> vertical patterns are poor for most uses.
>
> 73, Jim K9YC
>
>
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