This is the 4NEC2 antenna bend model for: Standard Horizontal 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 variable arm length (arm) for
various angles of bend (Symbols, "ang=").
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 horizontal
L-dipole model for comparison studies.
CM #14 AWG. Feedpoint 1/2 wavelength over ground at 28.4 mc.
CM Fixed Vertical Arm with Variable Angle Side Arm
CM Dick Reid, KK4OBI, 2016
CE
SY hgh=5.282 '150/28.4=5.282
=1/2 wl height feedpoint - meters
SY vert=2.498911 'Fixed Vertical Arm length -
meters
SY ang=90
'Angle of Variable arm. 90=horizontal, 0=down
SY arm=2.730715 'Variable Side Arm length - meters
SY x=arm*Sin(ang) 'X-value of Side Arm
SY z=arm*Cos(ang) 'Z-value of Side 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
EN