View Single Post
  #4   Report Post  
Old August 13th 11, 10:15 PM posted to rec.radio.amateur.antenna
Jeff Liebermann[_2_] Jeff Liebermann[_2_] is offline
external usenet poster
 
First recorded activity by RadioBanter: Jun 2007
Posts: 1,336
Default 4nec2 hidden variables.

On Sat, 13 Aug 2011 21:07:17 +0200, Helmut Wabnig [email protected] ---
-.dotat wrote:

Am trying to run an optimization on my 3 element yagi which I finally
got into the editor, which was difficult enough.
The optimizer says: no variables selected
but there are none to select.
Empty list field.


Are you using symbols, or did you hard code all the dimentions in ft
or meters? The optimizer won't work without using symbols.

4NEC2 forums. Where to ask such questions:
http://fornectoo.freeforums.org

Oh, how I hate this.


If it were easy, it would not be fun.
One must suffer before enlightenment.

Praise Bill Gates for his user-friendly WINDOWS
and to hell with all amateur softwares.


If you were around in the bad old days of computing, you might be
praising Bill Gates for saving us from the evils of big computer
companies. There was a time when you had to buy pre-formatted
floppies to work in DEC PC's, and when every machine had a different
floppy disk format. Anyway, your frustration with not reading the
manual and learning to use 4NEC2 has nothing to do with Windoze or
Bill Gates.

Nowhere in the helps and getting started they explain that.


True. Found with Google in a few minutes:

4NEC2 tutorial including optimizer and evolver:
http://heplx3.phsx.ku.edu/~dzb/antcal/nec-files/_GetStarted.txt
See section 5.

Video of optimizer (25 min):
http://www.youtube.com/watch?v=kYy6Yur127A

I do not want to learn from examples,


Then you will fail or at least be more frustrated. Hacking your own
path throught the wilderness is far more work than following in
someone elses footsteps.

I rather work from the
basics upwards. Would anyone learn math from a calculus
formula without knowing the arabic numbers first?


Most certainly possible. There are numerous tools the devices that I
use with only a minimal understanding for how they work. For example,
there are many drivers on the road that could not even begin to
explain how a gasoline engine works. (Hint: Carnot heat engine). I
suspect that such basic knowledge would not improve their driving
ability.

Am in a baad mood tooday.


Have a better day.
--
Jeff Liebermann
150 Felker St #D
http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558