This is the 4NEC2 antenna bend model for: Vertical L-Dipoles
To use this model:
Below. Highlight and copy (Ctrl C) the program control codes (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 antenna model.
In Windows Explorer, right-click on your new model and "Rename" the file to end as ".nec".
Open your new model to optimize the length of the Variable Arm
(arm=) at the bend Angle (ang=) of interest.
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 Vertical L-Dipole
model for comparison studies
CM #14 AWG. 1/2 wavelength feedpoint over ground at 28.4 mc.
CM Fixed Vertical Arm. Adjustable angle arm.
CM Dick Reid. KK4OBI, 2016
CE
SY hgh=5.282
'150/28.4=5.282=1/2wl feedpoint height - meters
SY vert=2.442543 'Fixed vertical arm length - meters
SY ang=90
'Angle of variable arm. 90=horizontal, 0=down
SY arm=2.792158 'Optimized variable arm length - meters
SY x=arm*Sin(ang) 'X-value of variable arm
SY z=arm*Cos(ang) 'Z-value of variable arm
GW 1 25
0 0 hgh+vert
0 0 hgh #14
'Fixed Vertical arm
GW 2 25
0 0 hgh
x 0
hgh-z #14 'Variable angle arm
GE 1
GN 2 0
0 0 4 0.003
EK
EX 0 1
25 0 1
0 0
EX 0 2
1 0 1
0 0
FR 0 0
0 0 28.4 0
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