CM Linear loaded dipole for 40m - https://www.arrl.org/files/file/Technology/tis/info/pdf/0207040.pdf
CM Model created by Roger Walker, GW6HRU
CM
CM UK Bandplan reminder:
CM      7.000   7.200   7.100   42.22
CE
SY M=10		'MidpointHeight above ground
SY E=M		'Endpoint Height above ground
SY F=7.100	'Target centre frequency
SY R=0.0005	'Wire radius
SY V=0.92	'Wire velocity (also adjusts for nearness to ground and reflector)
SY CW=V*299.792458/F	'Wavelength
SY CF=CW/250	'Feedpoint size
SY CQ=CW/4	'Quarter wavelength = expected length of each side
SY CG=CW/800	'Gap between ladder and wire
SY CL1=CQ*2/3	'Main wire is 2/3 of the 1/4 wave length
SY CL2=CQ*1/3	'Ladder line is 1/3 of the 1/4 wave length
SY CZ=M-E	'Vertical difference from centre to ends
SY CX1=sqr((CL1-(CF/2))^2-CZ^2)+(CF/2)	'Horizontal endpoint of wire elements
SY CX2=sqr((CL2-(CF/2))^2-CZ^2)+(CF/2)	'Horizontal endpoint of ladder line
GW	99	1		-CF/2	0	M-CG	CF/2	0	M-CG	R	'Feed point is at lower edge of midpoint, 1/2 left + 1/2 right
GW	11	1+int(CL2/CF)	-CF/2	0	M-CG	-CX2	CG	E-CG	R	'Left lower ladder line
GW	12	1		-CX2	CG	E-CG	-CX2	CG	E+CG	R	'Left ladder line link
GW	13	1+int(CL2/CF)	-CX2	CG	E+CG	-CF/2	0	M+CG	R	'Left upper ladder line
GW	14	1		-CF/2	0	M+CG	-CF/2	0	M	R	'Left upper to mid link
GW	15	1+int(CL1/CF)	-CF/2	0	M	-CX1	0	E	R	'Left mid wire
GW	21	1+int(CL2/CF)	CF/2	0	M-CG	CX2	CG	E-CG	R	'Left lower ladder line
GW	22	1		CX2	CG	E-CG	CX2	CG	E+CG	R	'Left ladder line link
GW	23	1+int(CL2/CF)	CX2	CG	E+CG	CF/2	0	M+CG	R	'Left upper ladder line
GW	24	1		CF/2	0	M+CG	CF/2	0	M	R	'Left upper to mid link
GW	25	1+int(CL1/CF)	CF/2	0	M	CX1	0	E	R	'Left mid wire
GE	1									'Ground model, 1=Real Ground
LD	5	0	0	0	58000000				
GN	2	0	0	0	4	0.003				'2=Moderate, 4=dielectric constant, 0.003=Conductivity
EK
EX	0	99	1	0	1	0	0			'Load 0=Voltage source, feeding tag 99, segment 1
FR	0	0	0	0	7.1	0				'Default frequency
EN