[Antennas] MODELING_PROGRAM_SIMPLE?

[Ed Griffin]

Programs that I have seen all use the x,y,z coordinates to define each end 
of a wire.  Think of z as being the height of the antenna.  Then think of x 
being the east-west direction and y being the north-south direction.  A 20 
ft long dipole, 15 feet in the air (and hanging east-west) should be
End 1 ,,,,,   -10,0,15
End  2 ,,,,   10,0,15
*this is assuming that you have chosen "feet" and not "inches" as the unit 
of measurement

  You should get the hang of it if you just play with it some.

I think the EZNEC demo has a tutorial called "taking a test drive" or 
something similar.  If you follow that through, you should grasp the layout 
of a dipole pretty quickly.

73
Ed



At 06:31 PM 1/24/2006, you wrote:
>Let me ask this question again with a twist.
>First thank you to all that responded to my question asking for a free 
>antenna modeling program.
>I down loaded the MMANA modeling program and I don't have a clue at what 
>it is asking for or what it's output will be. I guess I'm just not with it.
>
>Is there a MODELING PROGRAM that asks for the length of the dipole, height 
>above ground, and then outputs the polar display of the lobs vertical and 
>horizontal? Maybe the feed impedance as well?
>The MMANA is talking X, Y and Z??? Then seems to give a vector display of 
>which I don't know what it means.
>This program looks too complicated for me?
>All I want to know is how the lobs look at various dipole lengths.
>Thanks.
>George




                 KMA Antennas
   HF - VHF - UHF Log Periodic Antennas
     For Research, Military and Amateur
         http://www.kmaantennas.com


         Support qsl.net with a donation
          https://proxy.qsl.net/donation