Here is an attempt to show what I am seeing. I had to get out an older windows based laptop to use this tool as it doesn't work through wine on my current linux machine...
Anyway, here is total gain, we are looking down the Z axis, the dipole antenna is on the X axis, which goes from left to right, and the Y axis goes up and down.
[photo=large]6742[/photo]
Its the standard dipole in free-space layout, only instead of looking at it in a 2d slice, we are looking at it in 3d from end on broadside of the antenna. This is what we would expect to see from a dipole at this angle.
The horizontaly polarized gain should look exactly the same as this antenna is a horizontally polarized antenna, but...
[photo=large]6743[/photo]
It clearly doesn't. From this angle, it actually looks like we are looking at a 2d slice, not a 3d representation of this antenna.
And finally the vertically polarized component.
[photo=large]6741[/photo]
What seems to be happening is, anything that lines up with the YZ axis plane is being treated as horizontally polarized radiation, while any radiation along the XZ axis plane is being treated as vertical radiation. As I stated above, this does not happen if the antenna is on the Z axis, just the X and Y axis, and likely any layout on the XY axis plane.
Henry, I will post the 4nec2 and the raw nec2 file text of the test models below. The reason there are three wires on each is because I started with the model that was similar to the super sinner antenna, and then straightened the other two wires out to create the dipole.
This is the model that is lined up on the X axis, fist the 4nec2 file, then the raw nec2 file.
[CODE]CM
CE
SY el=73.287
SY ah=120
GW 1 1 30 0 0 -30 0 0 .125
GW 2 1 30+el 0 0 30 0 0 .125
GW 3 1 -30 0 0 -30-el 0 0 .125
GS 0 0 0.0254
GE 0
GN -1
EK
EX 0 1 50% 0 1 0 0
FR 0 0 0 0 27.2 0
EN[/CODE]
[CODE]CM
CE
GW 1 15 30 0 0 -30 0 0 0.125
GW 2 17 103.287 0 0 30 0 0 0.125
GW 3 17 -30 0 0 -103.287 0 0 0.125
GS 0 0 0.0254
GE 0
GN -1
EK
EX 0 1 8 0 1 0
FR 0 0 0 0 27.2 0
XQ
EN[/CODE]
Next the model that lines up on the Y axis.
[CODE]CM
CE
SY el=73.287
SY ah=120
GW 1 1 0 30 0 0 -30 0 .125
GW 2 1 0 30+el 0 0 30 0 .125
GW 3 1 0 -30 0 0 -30-el 0 .125
GS 0 0 0.0254
GE 0
GN -1
EK
EX 0 1 50% 0 1 0 0
FR 0 0 0 0 27.2 0
EN[/CODE]
[CODE]CM
CE
GW 1 15 0 30 0 0 -30 0 0.125
GW 2 17 0 103.287 0 0 30 0 0.125
GW 3 17 0 -30 0 0 -103.287 0 0.125
GS 0 0 0.0254
GE 0
GN -1
EK
EX 0 1 8 0 1 0
FR 0 0 0 0 27.2 0
RP 0 181 361 1003 -180 0 1 1[/CODE]
And finally the Z axis.
[CODE]CM
CE
SY el=73.287
SY ah=120
GW 1 1 0 0 30 0 0 -30 .125
GW 2 1 0 0 30+el 0 0 30 .125
GW 3 1 0 0 -30 0 0 -30-el .125
GS 0 0 0.0254
GE 0
GN -1
EK
EX 0 1 50% 0 1 0 0
FR 0 0 0 0 27.2 0
EN[/CODE]
[CODE]CM
CE
GW 1 15 0 0 30 0 0 -30 0.125
GW 2 17 0 0 103.287 0 0 30 0.125
GW 3 17 0 0 -30 0 0 -103.287 0.125
GS 0 0 0.0254
GE 0
GN -1
EK
EX 0 1 8 0 1 0
FR 0 0 0 0 27.2 0
RP 0 181 361 1003 -180 0 1 1[/CODE]
Also, while you are here, have you seen or done anything with nec5 yet?
The DB
