CM yagi4elem_2m.nec - Geometry Control Cards for 4-element Yagi
CM
CM The example cards belows define a very simple dipole.
CM The height of the dipole could be specified as Z values, but using
CM the Geometry Modify (GM) card makes it easy to define the height by
CM changing just one value (the Z-offset)
CM
CM GW - specifies a wire that is 1/2 wavelength long. It is divided into
CM an odd number of sections so that an excitation source can be
CM attached to the center of the antenna. By convention the wire
CM will be aligned on the Y-axis and centered over the X-axis.
CM The example here is for 14.1MHz using 12 gauge (2.5mm) wire
CM
CM GM - set the vertical (Z) height of the antenna.
CM The height set here is 1/2 wavelength at 14.1MHz
CM
CM GE - specify that a non-ideal ground is present. This specification
CM of a ground does not cause a ground to be used in the
CM calculation (use a GN card for that), but instead causes some
CM modifications to the generated geometry. For the dipole
CM specified here, there are no changes, so this is a no-op.
CM
CM Tag NS X1 Y1 Z1 X2 Y2 Z2 RAD
CE
GW 1 11 -0.504E+00 0.140E+00 0.00E+00 0.504E+00 0.140E+00 0.000E+00 0.005E+00
GW 2 11 -0.481E+00 0.520E+00 0.00E+00 0.481E+00 0.520E+00 0.000E+00 0.005E+00
GW 3 11 -0.453E+00 0.711E+00 0.00E+00 0.453E+00 0.711E+00 0.000E+00 0.005E+00
GW 4 11 -0.457E+00 1.091E+00 0.00E+00 0.457E+00 1.091E+00 0.000E+00 0.005E+00
GW 5 11 0.000E+00 0.000E+00 0.00E+00 0.000E+00 1.118E+00 0.000E+00 0.022E+00
GM 0 0 0.000E+00 0.000E+00 0.00E+00 0.000E+00 0.000E+00 1.000E+00 0.000E+00
GE 1
EX 0 2 6 00 1.000E+00 0.000E+00
FR 0 9 0 0 1.400E+02 1.000E+00
RP 0 37 36 1000 0.000E+00 0.000E+00 5.000E+00 1.000E+01 0.000E+00 0.000E+00
EN 0 0 0 0