CM Cushcraft R7 model by Carol F. Milazzo, KP4MD CE SY hft=0 'Input height above ground in feet (default=5) SY ht=hft*12 'Calculate height above ground in inches SY rdl=49 'length of counterpoise radials SY rdm=rdl/sqr(2) 'x,y ends of diagonal radials SY hat=18 'length of x-hat radials SY xh1=123+ht 'height of x-hat1 SY xh2=214+ht 'height of x-hat2 SY f1a=28e6 'TV1a trap 10m frequency SY l1a=8.172e-7 'L SY c1a=1/(4*pi^2*f1a^2*l1a) 'C SY f1b=24e6 'TV1b trap 12m frequency SY l1b=1.083e-6 'L SY c1b=1/(4*pi^2*f1b^2*l1b) 'C SY f2=21.2e6 'TV2 trap 15m frequency SY l2=2.598e-6 'L SY c2=1/(4*pi^2*f2^2*l2) 'C SY f3=18.11e6 'TV3 trap 17m frequency SY l3=3.002e-6 'L SY c3=1/(4*pi^2*f3^2*l3) 'C SY f4=14.47e6 'TV4 trap 20m frequency SY l4=4.236e-6 'L SY c4=1/(4*pi^2*f4^2*l4) 'C SY f5=9.41e6 'TV5 trap 30m frequency SY l5=5.343e-6 'L SY c5=1/(4*pi^2*f5^2*l5) 'C GW 1 21 0 0 ht 0 0 xh1 0.625 'Section A GW 2 4 0 0 xh1 0 0 xh1+20 0.5625 'TV1 trap GW 3 2 0 0 xh1+20 0 0 xh1+30 0.5625 'Section B GW 4 1 0 0 xh1+30 0 0 xh1+36 0.5 'TV2 trap GW 5 1 0 0 xh1+36 0 0 xh1+41 0.5 'Section C GW 6 1 0 0 xh1+41 0 0 xh1+47 0.5 'TV3 trap GW 7 3 0 0 xh1+47 0 0 xh1+63 0.5 'Section D GW 8 1 0 0 xh1+63 0 0 xh1+69 0.5 'TV4 trap GW 9 3 0 0 xh1+69 0 0 xh2-6 0.5 'Section E GW 10 1 0 0 xh2-6 0 0 xh2 0.5 'TV5 trap GW 11 5 0 0 xh2 0 0 xh2+32 0.25 'Section F GW 12 8 0 rdl ht 0 0 ht 0.125 'Counterpoise radials GW 13 8 rdl 0 ht 0 0 ht 0.125 GW 14 8 0 -rdl ht 0 0 ht 0.125 GW 15 8 rdm rdm ht 0 0 ht 0.125 GW 16 8 rdm -rdm ht 0 0 ht 0.125 GW 17 8 -rdm -rdm ht 0 0 ht 0.125 GW 18 8 -rdm rdm ht 0 0 ht 0.125 GW 19 3 0 0 xh1 0 hat xh1 0.125 'X-hat 1 radials GW 20 3 0 0 xh1 hat 0 xh1 0.125 GW 21 3 0 0 xh1 0 -hat xh1 0.125 GW 22 3 0 0 xh1 -hat 0 xh1 0.125 GW 23 3 0 0 xh2 0 hat xh2 0.125 'X-hat 2 radials GW 24 3 0 0 xh2 hat 0 xh2 0.125 GW 25 3 0 0 xh2 0 -hat xh2 0.125 GW 26 3 0 0 xh2 -hat 0 xh2 0.125 GS 0 0 0.0254 GE 0 LD 0 1 2 2 0 0 43e-12 '43 pF series capacitor in matching unit LD 6 2 2 2 250 l1a c1a 'TV1a trap 10m LD 6 2 4 4 250 l1b c1b 'TV1b trap 12m LD 6 4 1 1 250 l2 c2 'TV2 trap 15m LD 6 6 1 1 250 l3 c3 'TV3 trap 17m LD 6 8 1 1 250 l4 c4 'TV4 trap 20m LD 6 10 1 1 250 l5 c5 'TV5 trap 30m LD 5 0 0 0 37700000 'All aluminum GN -1 EK EX 0 1 1 0 1 0 0 'Power source for antenna FR 0 0 0 0 14.175 0 EN