CM 2-metre Lindenblad PARASITIC Array, converted with 4nec2 on 7-Oct-15 8:47
CM Based on lindnbld.ez file download: http://nec-archives.pa3kj.com/EZNEC_FILES
CM Four Passive Elements at 45-deg Angles, L=37.61-in, assuming 13.3-in from Center.
CM holl_ands mods: Add FR/RP, Just ONE vs Multiple LD Cards, Convert All SYmbols.
CM Parasitic Array mod: Add 37.93-in Vertical Dipole, which is ONLY Active Element.
CM Angle of the Parasitic Array Elements must be REVERSED to return to RHCP.
CM Active & Passive Element Lengths adjusted for Min SWR and Min LHCP at 145 MHz.
CM
CMD--EVAL --auto-segmentation=0 --char-impedance=50 --num-cores=7
CMD--EVAL -s(130,5,7) --total-gain --publish
CE
SY freq=145.0 ' Design frequency
SY Cond=3.0e7 ' Conductivity (Copper=3.0e7, Alum=2.0e7, StainlessSteel=1.67e7)
'
' Half of Stick Dipole Length (in Wavelengths):
SY Zmax=0.233
' Radius of Stick Dipole Element (in Wavelengths):
SY RSD=0.0005
'
' Half-Length of Parasitic Diagonals (in Wavelengths):
SY Ldiag=0.231
' Distance of Diagonals from Center of Antenna (in Wavelengths):
SY Sep=0.25
' Angle of Diagonal wrt X-Y Plane:
SY Alpha=-45.0
' Projection of Parasitic Diagonal Half-Length onto X-Y Plane:
SY Proj1=Ldiag*cos(Alpha)
' Projection of Parasitic Diagonal Half-Length onto Z-Axis:
SY Z1=Ldiag*sin(Alpha)
'
' Height of Antenna's Center above Ground Plane: [No effect on FREE SPACE Performance]
SY Zh=0.0
' Radius of Diagonal Elements: [ALSO IN WAVELENGHT UNITS]
SY Rdiag=0.0005
'
' # segs X1 Y1 Z1 X2 Y2 Z2 radius
' SIMULATED BALUN SOURCE ON GW1:
GW 1 15 0.0 0.0 -Zmax+Zh 0.0 0.0 Zmax+Zh RSD
'
GW 2 15 -Proj1 -Sep -Z1+Zh Proj1 -Sep Z1+Zh Rdiag
GW 3 15 Proj1 Sep -Z1+Zh -Proj1 Sep Z1+Zh Rdiag
GW 4 15 Sep -Proj1 -Z1+Zh Sep Proj1 Z1+Zh Rdiag
GW 5 15 -Sep Proj1 -Z1+Zh -Sep -Proj1 Z1+Zh Rdiag
'
GS 0 0 299.8/freq ' Convert above in Wavelengths to meters for NEC2.
GE 0
GN -1
EK
LD 5 0 0 0 Cond 0
'
EX 0 1 8 0 1 0 ' GW1 is SOURCE wire
'
' FR 0 1 0 0 145.8 0 ' fm Original
'
' FR choices:
' FR 0 1 0 0 52 ' Fixed Frequency for 6-metes
' FR 0 1 0 0 146 ' Fixed Frequency for 2-meters
' FR 0 1 0 0 443 ' Fixed Frequency for 70-cm
'
' FR 0 21 0 0 40 1 ' Freq Sweep 40-60 every 1 MHz for 6-meters
FR 0 31 0 0 130 1 ' Freq Sweep 130-160 every 1 MHz for 2-meters
' FR 0 41 0 0 420 1 ' Freq Sweep 420-460 every 1 MHz for 70-cm
'
' FR 0 121 0 0 131 3 ' Freq Sweep 131-471 every 3 MHz for 2-m & 70-cm
' FR 0 61 0 0 50 2 ' Freq Sweep 40-160 every 2 MHz for 6-m & 2-m
' FR 0 146 0 0 36 3 ' Freq Sweep 36-471 every 3 MHz for 6-m, 2-m & 70-cm
'
' RP choices in order of increasing calculation time:
' RP 0 1 1 1510 90 90 1 1 0 0 ' 1D Gain toward 0-deg Azimuth - SIDE GAIN
' RP 0 1 1 1510 90 0 1 1 0 0 ' 1D Gain toward 90-deg Azimuth - FORWARD GAIN
' RP 0 1 1 1510 90 180 1 1 0 0 ' 1D Gain toward 270-deg Azimuth - REVERSE GAIN
' RP 0 1 37 1510 90 0 1 5 0 0 ' 2D (Left only) Azimuthal Gain Slice
RP 0 1 73 1510 90 0 1 5 0 0 ' 2D Azimuthal Gain Slice - PREFERRED
' RP 0 73 1 1510 90 0 5 1 0 0 ' 2D Elevation Gain Slice
' RP 0 73 73 1510 90 0 5 5 0 0 ' 3D Lower Hemisphere reveals antenna (Fixed Freq)
' RP 0 285 73 1510 90 0 5 5 0 0 ' 3D Full Coverage obscures antenna (Fixed Freq)
EN

Input file : T:\4nec2\6M_2M_70cm\2m Lindblad Parasitic Array\
2m_Lindenblad_Parasitic+VertDipole.nec
Freq sweeps: [(130, 5, 7)]
Autosegmentation: NO
--- Gain --- -- Ratios -- -- Impedance --
Freq Raw Net SWR BeamW F/R F/B Real Imag AGT corr
==========================================================================
130.0 2.18 -3.50 12.70 180.0 -0.16 0.00 33.39 -133.13 1.00 -0.01
135.0 2.24 -1.45 7.21 180.0 -0.29 0.00 33.22 -92.79 1.00 -0.01
140.0 2.25 0.82 3.24 180.0 -0.51 0.00 33.73 -48.51 1.00 -0.01
145.0 2.09 2.02 1.28 180.0 -0.77 0.00 39.24 1.33 1.00 -0.01
150.0 1.81 0.83 2.62 180.0 -0.84 0.00 56.26 52.77 1.00 -0.01
155.0 1.66 -0.41 4.21 180.0 -0.69 0.00 84.00 95.42 1.00 -0.01
160.0 1.63 -1.11 5.33 180.0 -0.51 0.00 112.11 125.87 1.00 -0.01
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CM CM 2-metre Lindenblad PARASITIC Array, converted with 4nec2 on 7-Oct-15 8:47 CM Based on
lindnbld.ez file download: http://nec-archives.pa3kj.com/EZNEC_FILES CM Four Passive Elements at 45-deg
Angles, L=37.61-in, assuming 13.3-in from Center. CM holl_ands mods: Add FR/RP, Just ONE vs Multiple LD
Cards, Convert All SYmbols. CM Parasitic Array mod: Add 37.93-in Vertical Dipole, which is ONLY Active
Element. CM Angle of the Parasitic Array Elements must be REVERSED to return to RHCP. CM Active &
Passive Element Lengths adjusted for Min SWR and Min LHCP at 145 MHz. CM CMD--EVAL --auto-
segmentation=0 --char-impedance=50 --num-cores=7 CMD--EVAL -s(130,5,7) --total-gain --publish CE SY
freq=145 SY Cond=3e+07 ' ' Half of Stick Dipole Length (in Wavelengths): SY Zmax=0.233 ' Radius of
Stick Dipole Element (in Wavelengths): SY RSD=0.0005 ' ' Half-Length of Parasitic Diagonals (in
Wavelengths): SY Ldiag=0.231 ' Distance of Diagonals from Center of Antenna (in Wavelengths): SY
Sep=0.25 ' Angle of Diagonal wrt X-Y Plane: SY Alpha=-45 ' Projection of Parasitic Diagonal Half-Length
onto X-Y Plane: SY Proj1=Ldiag*cos(Alpha) ' Projection of Parasitic Diagonal Half-Length onto Z-Axis: SY
Z1=Ldiag*sin(Alpha) ' ' Height of Antenna's Center above Ground Plane: [No effect on FREE SPACE
Performance] SY Zh=0 ' Radius of Diagonal Elements: [ALSO IN WAVELENGHT UNITS] SY Rdiag=0.0005 ' '
# segs X1 Y1 Z1 X2 Y2 Z2 radius ' SIMULATED BALUN SOURCE ON GW1: GW 1 15 0.0 0.0 -Zmax+Zh 0.0
0.0 Zmax+Zh RSD ' GW 2 15 -Proj1 -Sep -Z1+Zh Proj1 -Sep Z1+Zh Rdiag GW 3 15 Proj1 Sep -Z1+Zh
-Proj1 Sep Z1+Zh Rdiag GW 4 15 Sep -Proj1 -Z1+Zh Sep Proj1 Z1+Zh Rdiag GW 5 15 -Sep Proj1 -Z1+Zh
-Sep -Proj1 Z1+Zh Rdiag ' GS 0 0 299.8/freq' Convert above in Wavelengths to meters for NEC2. GE 0 GN
-1 EK LD 5 0 0 0 Cond 0 ' EX 0 1 8 0 1 0' GW1 is SOURCE wire ' ' FR 0 1 0 0 145.8 0 ' fm Original ' ' FR
choices: ' FR 0 1 0 0 52 ' Fixed Frequency for 6-metes ' FR 0 1 0 0 146 ' Fixed Frequency for 2-meters ' FR
0 1 0 0 443 ' Fixed Frequency for 70-cm ' ' FR 0 21 0 0 40 1 ' Freq Sweep 40-60 every 1 MHz for 6-meters
FR 0 31 0 0 130 1' Freq Sweep 130-160 every 1 MHz for 2-meters ' FR 0 41 0 0 420 1 ' Freq Sweep 420-
460 every 1 MHz for 70-cm ' ' FR 0 121 0 0 131 3 ' Freq Sweep 131-471 every 3 MHz for 2-m & 70-cm ' FR
0 61 0 0 50 2 ' Freq Sweep 40-160 every 2 MHz for 6-m & 2-m ' FR 0 146 0 0 36 3 ' Freq Sweep 36-471
every 3 MHz for 6-m, 2-m & 70-cm ' ' RP choices in order of increasing calculation time: ' RP 0 1 1 1510 90
90 1 1 0 0 ' 1D Gain toward 0-deg Azimuth - SIDE GAIN ' RP 0 1 1 1510 90 0 1 1 0 0 ' 1D Gain toward 90-
deg Azimuth - FORWARD GAIN ' RP 0 1 1 1510 90 180 1 1 0 0 ' 1D Gain toward 270-deg Azimuth -
REVERSE GAIN ' RP 0 1 37 1510 90 0 1 5 0 0 ' 2D (Left only) Azimuthal Gain Slice ' RP 0 1 73 1510 90 0 1
5 0 0 ' 2D Azimuthal Gain Slice - PREFERRED RP 0 73 1 1510 90 0 5 1 0 0' 2D Elevation Gain Slice ' RP 0 73
73 1510 90 0 5 5 0 0 ' 3D Lower Hemisphere reveals antenna (Fixed Freq) ' RP 0 285 73 1510 90 0 5 5 0 0
' 3D Full Coverage obscures antenna (Fixed Freq) EN