This is the 4NEC2 antenna bend model for: Vertical V-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 (L=) of the dipole
wire 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 center-fed
vertical V-dipole model for comparison studies
CM #14 AWG. Feedpoint 1/2 wavelength over ground at 28.4 mc.
CM Fixed geometry so only 1 segment in middle as feed point. DO
NOT CHANGE!
CM Variable angle from vertical
CM Dick Reid, KK4OBI, 2016
CM
CE
SY hgh=5.282
'150/28.4=5.282=1/2 wl feedpoint - meters
SY L=5.167283 'Optimized
length of 1/2 wave dipole - meters
SY R=0.1015
'Fixed 0.1015 to give one segment long center feedpoint
SY Bend=(L-R)/2 'Length of bend
section
SY Ang=36
'Angle of bend section 0=no bend, 45=Right angle V
SY X=Bend*SIN(Ang) 'X-value of bend section
SY Z=Bend*COS(Ang) 'Z-value of bend section
GW 1 25
X 0 hgh+(r/2)+Z
0 0 hgh+(r/2)
#14 'Upper Bend
GW 2
1 0 0
hgh+(r/2) 0
0 hgh-(r/2) #14
'Center feedpoint
GW 3 25
0 0 hgh-(r/2)
X 0
hgh-(r/2)-z #14 'Lower Bend
GE -1
GN 2 0
0 0 14 6.e-3
EK
EX 0 2
50% 0 1
0 0
FR 0 0
0 0 28.4 0
EN Back