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Thanks for the welcome Marconi.


Agree 100%

My last step is usually to add a variable," SY    AGL=240" and add it to all the Z coordinates


Is it the sigma 4 baskets and the "trick" employed to help the model show the basket elements in phase with the main radiator? 

Does this?


Hey! I might resemble that remark  :whistle:

Even well meaning and conscientious modelers can overlook some important factor (like AGT tests) it's easy to miss things when you have lots of models and variations and you alter them considerably.

I hope for someone to point out where my models have room for improvement.

Even though I mostly use them to compare or answer a certain question.


This is my study model of the sigma 4 (in freespace)

It is not intended to be an exact model of any specific antenna (and probably needs a  mast)

[CODE]CM 11 meter cb by ghz24 (sigma 4)

CE

SY z=324    'driven element length

SY rh=108    'ring height

SY zp=12    'avoid segment errors

SY rsf=1    'changes ring diameter

GW    1    1    0    0    0    0    0    zp    0.17

GW    2    67    0    0    zp    0    0    z    0.05260011

GW    6    7    0    0    0    0    30*rsf    rh    0.05260011

GW    7    7    0    0    0    0    -30*rsf    rh    0.05260011

GW    8    7    0    0    0    -30*rsf    0    rh    0.05260011

GW    9    9    0    0    0    30*rsf    0    rh    0.05260011

GW    100    1    29.99994*rsf    0*rsf    0+rh    27.7163225*rsf    11.4804889*rsf    0+rh    0.05260011

GW    101    1    27.7163225*rsf    11.4804889*rsf    0+rh    21.2131466*rsf    21.2131466*rsf    0+rh    0.05260011

GW    102    1    21.2131466*rsf    21.2131466*rsf    0+rh    11.4804889*rsf    27.7163225*rsf    0+rh    0.05260011

GW    103    1    11.4804889*rsf    27.7163225*rsf    0+rh    0*rsf    29.99994*rsf    0+rh    0.05260011

GW    104    1    0*rsf    29.99994*rsf    0+rh    -11.480489*rsf    27.7163225*rsf    0+rh    0.05260011

GW    105    1    -11.480489*rsf    27.7163225*rsf    0+rh    -21.213147*rsf    21.2131466*rsf    0+rh    0.05260011

GW    106    1    -21.213147*rsf    21.2131466*rsf    0+rh    -27.716323*rsf    11.4804889*rsf    0+rh    0.05260011

GW    107    1    -27.716323*rsf    11.4804889*rsf    0+rh    -29.99994*rsf    0*rsf    0+rh    0.05260011

GW    108    1    -29.99994*rsf    0*rsf    0+rh    -27.716323*rsf    -11.480489*rsf    0+rh    0.05260011

GW    109    1    -27.716323*rsf    -11.480489*rsf    0+rh    -21.213147*rsf    -21.213147*rsf    0+rh    0.05260011

GW    110    1    -21.213147*rsf    -21.213147*rsf    0+rh    -11.480489*rsf    -27.716323*rsf    0+rh    0.05260011

GW    111    1    -11.480489*rsf    -27.716323*rsf    0+rh    0*rsf    -29.99994*rsf    0+rh    0.05260011

GW    112    1    0*rsf    -29.99994*rsf    0+rh    11.4804889*rsf    -27.716323*rsf    0+rh    0.05260011

GW    113    1    11.4804889*rsf    -27.716323*rsf    0+rh    21.2131466*rsf    -21.213147*rsf    0+rh    0.05260011

GW    114    1    21.2131466*rsf    -21.213147*rsf    0+rh    27.7163225*rsf    -11.480489*rsf    0+rh    0.05260011

GW    115    1    27.7163225*rsf    -11.480489*rsf    0+rh    29.99994*rsf    0*rsf    0+rh    0.05260011

GS    0    0    0.0254

GE    0

GN    -1

EK

EX    0    1    1    0    1    0    0

FR    0    0    0    0    27.18    0

EN[/CODE]

Not a really elegant model but I think it serves the purpose.

 OH!I just opened a  .ez file in notepad now I see why you cant just post the model like I did the one above. Is that a proprietary format?

And Marconi I don't think your efforts are in vain.