CM Arrow OSJ 146/440 J-Pole NEC model by Carol F. Milazzo, KP4MD CM Frequency = 146.000 MHz CM Impedance 50 ohms CM Simulated good ground CM At 80 inches height on metal mast CE SY frq=146 'frequency MHz SY m=80 'J-pole mast height inches SY j1=18.25 'J-pole driven element inches SY js=4.5 'J-pole element separation inches SY j2=54.75 'J-pole second element inches SY j3=5.75 'J-pole 440 element inches SY rad=0.1875 'element radius GW 1 j2/js*3 -js 0 m+j2 -js 0 m rad 'J-pole long element GW 2 3 -js 0 m 0 0 m rad 'J-pole base GW 3 j1/js*3 0 0 m 0 0 m+j1 rad 'J-pole driven element GW 4 j3/js*3 0-js/3 0 m+j3 -js/3 0 m rad 'J-pole 440 element GW 5 m/js*3 -js*2/3 0 0 -js*2/3 0 m 0.6 'J-pole mast GS 0 0 0.0254 GE 1 LD 5 0 0 0 37700000 '3/8 inch aluminum rod GN 2 0 0 0 4 0.01 EK EX 0 3 1 0 01 0 0 'Feed point FR 0 0 0 0 frq 0 EN