examples/vertical/ground-plane.nec
Ryan Malloy 38e5977bb1 Fix RP card theta range for correct 3D pattern rendering
Changed theta_start from -90 to 0 in all RP cards. The standard NEC2
convention uses theta 0-180 (zenith to nadir). Using -90 caused
cos(±90°)=0, making z=0 at pattern edges and rendering patterns flat.
2026-02-09 12:21:59 -07:00

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CM Ground Plane Antenna for 2m (146 MHz)
CM Vertical with 4 sloped radials at 45 degrees
CM @category: vertical
CM @band: 2m
CM @author: 4nec2-web
CM @tags: vertical, ground-plane, vhf, radials
CE
GW 1 11 0 0 0 0 0 0.5 0.002
GW 2 7 0 0 0 0.35 0 -0.35 0.002
GW 3 7 0 0 0 -0.35 0 -0.35 0.002
GW 4 7 0 0 0 0 0.35 -0.35 0.002
GW 5 7 0 0 0 0 -0.35 -0.35 0.002
GE 0
EK
EX 0 1 1 0 1 0
FR 0 1 0 0 146.0 0
RP 0 37 73 1000 0 0 5 5
EN