This is the 4NEC2 antenna bend model for: Standard Bent-endVertical Dipoles
To use this model:
Below. Highlight and copy (Ctrl C) the program control codes (CM,
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 desired bend Ratio (R=) (arm=) and bend Angle (Ang=)
4NEC2 is an NEC2, NEC4, Windows based antenna modeler and optimizer by
It is available free of charge at: www.qsl.net/4nec2/
CM Standardized Vertical Bent-end
model for comparison studies.
CM #14 AWG. Feedpoint at 1/2 wavelength over ground at 28.4 mc.
CM Variable distance of bend point from ends.
CM Bends on same side or Opposite side at any angle.
CM Dick Reid, KK4OBI, 2016
'150/28.4=5.282=1/2 wl feedpoint
height - meters
'Optimized length of 1/2 wave dipole - meters
'Number of segments in 1/2
'Bend Ratio 1=no
bend, 0.8=80% , 0.5=50% half-way
'Length of fixed vertical central Arm
'Number of segments in fixed vertical central arm
'Length of bend end section
SY SegsBend=Segs*(1-R)/2 'Numbers of segments in bend
'Bend end angle 0=no
bend, 45=East, 135=West
'X-value of bend end
SY Z=Bend*COS(Ang) 'Z-value of
GW 1 SegsArm
0 0 hgh-Arm/2
hgh+Arm/2 #14 'Center vertical section
GW 2 SegsBend
0 0 hgh+Arm/2
0 Bend hgh+Arm/2
#14 'Upper Bend end (-Bend for opposite side)
GW 3 SegsBend
0 0 hgh-Arm/2
0 Bend hgh-Arm/2
#14 'Lower Bend end
GN 2 0
0 0 14 6.e-3
EX 0 1
SegsArm/2 0 1
FR 0 0
0 0 28.4 0