CM BB8R6 antenna - Evolution from BB8R3 to BB8R6 with six bands
CM Author: YO5OUC - Nicolae Crisan
CM Six band antenna
CM 3.6/7.1/10.1/14.1/21.1/28.1 MHz tuned for PSK digital modes
CM
CM
CM
CM
CE
SY l1=10.9 'the length of the longer arm for 7.1 MHz (7.1MHz tuning)
SY l2=1.5 'distance from the end to the load L (3.6 MHz tuning)
SY alfa=60 'half of the tip angle
SY h=20 'distance from the ground
SY l3=0.3 'middle segmend where the source is placed
SY l4=0.2 'the segment where L is placed
SY L=106e-6 'inductance for 3.6 MHz
SY l5=6.62 'the arm length for 10.1MHz
SY l6=4.8 'the arm length for 14.1 MHz
SY L0=1.06e-6 'inductance for 28 MHz trap [uH]
SY h0=8.3 'the hight of the airon mast 8.3
SY C0=30e-12 'capacitance of the 28 Mhz trap [pF]
GW 1 11 -l3/2 0 h -l1*sin(alfa)-l3/2 0 h-l1*cos(alfa) 0.002
GW 2 11 l3/2 0 h l1*sin(alfa)+l3/2 0 h-l1*cos(alfa) 0.002
GW 3 1 -l3/2 0 h l3/2 0 h 0.002
GW 4 1 -l1*sin(alfa)-l3/2 0 h-l1*cos(alfa) -l1*sin(alfa)-l3/2-l4*sin(alfa) 0 h-l1*cos(alfa)-l4*cos(alfa) 0.002
GW 5 1 l1*sin(alfa)+l3/2 0 h-l1*cos(alfa) l1*sin(alfa)+l3/2+l4*sin(alfa) 0 h-l1*cos(alfa)-l4*cos(alfa) 0.002
GW 6 3 -l1*sin(alfa)-l3/2-l4*sin(alfa) 0 h-l1*cos(alfa)-l4*cos(alfa) -l1*sin(alfa)-l3/2-l4*sin(alfa)-l2*sin(alfa) 0 h-l1*cos(alfa)-l4*cos(alfa)-l2*cos(alfa) 0.002
GW 7 3 l1*sin(alfa)+l3/2+l4*sin(alfa) 0 h-l1*cos(alfa)-l4*cos(alfa) l1*sin(alfa)+l3/2+l4*sin(alfa)+l2*sin(alfa) 0 h-l1*cos(alfa)-l4*cos(alfa)-l2*cos(alfa) 0.002
GW 8 11 -l3/2 0 h -l3/2 -l5*sin(alfa)-l3/2 h-l5*cos(alfa) 0.002
GW 9 11 l3/2 0 h l3/2 l5*sin(alfa)-l3/2 h-l5*cos(alfa) 0.002
GW 10 1 -l3/2 0 h0 l3/2 0 h0 0.002
GW 11 9 -l3/2 0 h0 -l6*sin(alfa)-l3/2 0 h0-l6*cos(alfa) 0.002
GW 12 9 l3/2 0 h0 l6*sin(alfa)-l3/2 0 h0-l6*cos(alfa) 0.002
GW 13 11 0 0 0 0 0 h0-0.01 0.05
GE 1
LD 0 4 1 1 6 L 0
LD 0 5 1 1 6 L 0
LD 6 8 5 5 650 1.06e-6 30e-12
LD 6 9 5 5 650 1.06e-6 30e-12
GN 2 0 0 0 3 0.0001
EK
EX 0 3 1 0 1 0 0
TL 3 1 10 1 300 h-h0 0 0 0 0
FR 0 0 0 0 14.07 0
EN
