CM Multiband horizontal loop antenna, based on the design at https://www.surriel.com/radio/multi-band-hf-loop-antenna
CM Modelled by Roger Walker, GW6HRU
CM
CM UK Band plan reminder:
CM	1.800	1.850	1.825	164.27
CM	3.500	3.800	3.650	82.13 *
CM	5.2585	5.4065	5.333	56.22
CM	7.000	7.200	7.100	42.22 *
CM	10.100	10.150	10.125	29.61
CM	14.000	14.350	14.175	21.15 *
CM	18.068	18.168	18.118	16.55
CM	21.000	21.450	21.225	14.12 *
CM	24.890	24.990	24.940	12.02
CM	28.000	29.700	28.850	10.39 *
CM	50.000	52.000	51.000	5.88
CE
SY H=10.0	'Midpoint Height above ground
SY L=86.0	'Total wire length
SY W=0.0005	'Wire radius
SY V=1.0	'Wire velocity (also adjusts for nearness to ground)
SY F=(L/800)/sqr(2)	'Feedpoint XY offset from corner
SY SL=F*4.5		'Segment length
SY LS=((L*V)+2*F)/4	'Length of half a side
SY LHS=LS/2		'Length of half a side
GW	99	1		F-LHS	-LHS	H	-LHS	F-LHS	H	W	'Feed point is in back left corner
GW	1	1+int(LS/SL)	F-LHS	-LHS	H	LHS	-LHS	H	W	'Near side
GW	2	1+int(LS/SL)	LHS	-LHS	H	LHS	LHS	H	W	'Right side
GW	3	1+int(LS/SL)	LHS	LHS	H	-LHS	LHS	H	W	'Far side
GW	4	1+int(LS/SL)	-LHS	LHS	H	-LHS	F-LHS	H	W	'Left side
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	3.650	0				'7.100=default frequency
EN