CM 144 MHz Stacked Cebik Triangle Dipole Antenna NEC model by Carol F. Milazzo, KP4MD CM Horizontal orientation CM Frequency = 145.000 MHz CM 21 segments per dipole CM Simulated good ground CM http://www.qsl.net/kp4md/omnihoriz.htm CE SY frq=145 'Input frequency MHz SY len=34.54444 'Input dipole length inches SY dia=0.5 'Input dipole wire dia. inches SY rad=0.5*dia 'Calculate dipole wire radius SY n=21 'Input segments per dipole (must be odd) SY nc=0.5*(n+1) 'Calculate feed point segment SY r=15.09081 'Input feedpoint to hub distance inches SY h=40.87 'Input height inches to 0.5 lambda GW 1 n r -len/2 h r len/2 h rad 'First dipole at 0.5 lambda GM 1 2 0 0 120 0 0 0 1 'Complete the triangle GM 3 1 0 0 0 0 0 h 1 'Copy triangle to 1 lambda GS 0 0 0.0254 GE 1 LD 5 0 0 0 58000000 '0.5 inch copper tubing GN 2 0 0 0 4 0.01 EK EX 0 1 nc 0 1 0 0 'Feed point EX 0 2 nc 0 1 0 0 'Feed point EX 0 3 nc 0 1 0 0 'Feed point EX 0 4 nc 0 1 0 0 'Feed point EX 0 5 nc 0 1 0 0 'Feed point EX 0 6 nc 0 1 0 0 'Feed point FR 0 0 0 0 frq 0 RP 0 1 361 1000 76. 0. 0. 1. 0. EN