I can't imagine building a model, other than a very simple one, without using
variables.
In 4NEC2 I can change one variable (like height) and every element of a
multielement yagi goes to that height.
Rick K2XT
> Date: Thu, 17 Sep 2015 18:48:57 -0700
> To: towertalk@contesting.com
> Subject: Re: [TowerTalk] Has anyone every put up a V-beam?
> From: towertalk@contesting.com
>
> Rick wrote:
> >>> 4NEC2 files have a .nec extension. So if EZNEC can import them you would
> >>> be ok.
>
> Well, not quite. Yes, 4nec2 files have a .nec extension but they typically
> do not follow standard NEC conventions. For example, Paul's posted file
> contains these lines:
>
> SY len = 350 'Element Length
> SY ang = 67 'Included Angle
> SY hgt = 80 'Height AGL
> SY x = len*sin(ang/2), y = len*cos(ang/2) 'Cartesian Angle Computation
> GW 1 40 -x y hgt -1 0 hgt #14
>
> "SY" is not a standard NEC card type and "GW" cards using non-numeric fields
> are not standard. So EZNEC treats this .nec file as having an invalid format.
>
> >>> The other way around works (4NEC2 imports .EZ files).
>
> That also has a caution to it. 4nec2 will import simple .ez files but will
> not recognize some of the things found in newer .ez files such as wire
> insulation specs, transformers (baluns), or L-networks.
>
> Dan, AC6LA
>
>
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