This is the 4NEC2 antenna bend model for: 12 Zig-Zag Dipoles
To use this model:
* Highlight and copy (Ctrl C) the program control codes below (CM, CE, SY,etc).
* Open Windows Wordpad and copy (Ctrl V) the control codes into Wordpad.
* Go to "File, Save as..." and name your new Zig-Zag antenna model.
* In Windows Explorer, right-click on your Zig-Zag model and "Rename" the file to end as ".nec".
* Open your new model to set the Height ratio (R=) and optimize the Height (z=) of the Zig-Zags
* Hand calculations required for Length of wire.
4NEC2 is an NEC2, NEC4, Windows based antenna modeler and optimizer by Arie Voors.
It is available free of charge at: www.qsl.net/4nec2/
CM Standardized 12 Zig-Zag horizontal center-fed dipole.
CM #14 AWG. Feedheight 1/2 wavelength over ground.
CM Length ratio is set. Zig-Zag height is optimized.
CM Hand calculation needed for wire length.
CM
CM Dick Reid, KK4OBI, 2016
CE
SY hgh=5.146
'Optimized 1/2 wavelength feed point
SY Lw=5.282
'1/2 WL set by: 150/mhz=meters
SY Zigs=12
'Nbr of antenna zig-zags
SY z=0.29492
'Height of the Zigs
SY R=0.5
'Ratio used to set length of Zig-zag antenna
SY La=Lw*R
'Zig-zag antenna length tip to tip
SY base=La/Zigs
'bottom of Zig-Zag
SY s=base/2
'Step size for each zig-zag.
SY Hypot=sqr(s^2+z^2)
'hand calculation of Length of Hypotenuse (side) of a Zig.
SY LenWire=hypot*(2*Zigs) 'hand calculation of Length of wire needed.
GW 1 5
0 0
hgh s*1
0 hgh+z #14
'Right end, Up Zig
GW 2 5
s*1 0 hgh+z
s*2 0
hgh #14 'Down Zag
GW 3 5
s*2 0
hgh s*3
0 hgh+z #14
GW 4 5
s*3 0 hgh+z
s*4 0
hgh #14
GW 5 5
s*4 0
hgh s*5
0 hgh+z #14
GW 6 5
s*5 0 hgh+z
s*6 0 hgh
#14
GW 7 5
s*6 0 hgh
s*7 0
hgh+z #14
GW 8 5 s*7
0 hgh+z
s*8 0 hgh
#14
GW 9 5
s*8 0 hgh
s*9
0 hgh+z #14
GW 10 5 s*9
0 hgh+z
s*10 0 hgh
#14
GW 11 5
s*10 0 hgh
s*11 0
hgh+ #14
GW 12 5 s*11
0 hgh+z
s*12 0 hgh
#14
GW 13 5
0 0
hgh -s*1
0 hgh+z #14 'Center and
feed point
GW 14 5
-s*1 0
hgh+z -s*2
0 hgh #14
GW 15 5
-s*2 0
hgh -s*3
0 hgh+z #14
GW 16 5
-s*3 0 hgh+z
-s*4 0 hgh
#14
GW 17 5 -s*4
0 hgh
-s*5 0
hgh+z #14
GW 18 5
-s*5 0 hgh+z
-s*6 0 hgh
#14
GW 19 5
-s*6 0 hgh
-s*7 0 hgh+z
#14
GW 20 5
-s*7 0
hgh+z -s*8 0
hgh #14
GW 21 5
-s*8 0 hgh
-s*9 0
hgh+z #14
GW 22 5
-s*9 0 hgh+z
-s*10 0 hgh
#14
GW 23 5
-s*10 0 hgh
-s*11 0
hgh+z #14
GW 24 5
-s*11 0 hgh+z
-s*12 0 hgh
#14 'Left end, Down Zag
GE 1
GN 2 0 0 0 4 0.003
EK
EX 0 1
1 0 1
0 0
FR 0 0 0 0 28.4 0
EN