CM 3-band stacked fan dipole (parametric, high resolution)
CM Feed segment centered, all dipoles attached to ends
CM Geometry: top horizontal, lower inverted-V progressively
CM All angles in DEGREES (4NEC2 sin/cos use degrees)
CM --- Frequencies (for reference) ---
CM --- Feed geometry ---
CM --- Element lengths (tunable) ---
CM --- Inverted-V droop angles (degrees) ---
CM --- Derived geometry ---
CM --- Wire ---
CM --- Segmentation ---
CM --- Feed segment ---
CM --- 14 MHz dipole ---
CM --- 21 MHz dipole ---
CM --- 28 MHz dipole ---
CE
SY f14=14
SY f21=21
SY f28=28
SY feed_h=6
SY D=0.10
SY L14=5.00
SY L21=3.60
SY L28=2.75
SY droop21=15
SY droop28=25
SY z14=feed_h
SY z21=feed_h - L21*sin(droop21)
SY x21=L21*cos(droop21)
SY z28=feed_h - L28*sin(droop28)
SY x28=L28*cos(droop28)
SY wire_r=0.001
SY seg_feed=5
SY seg14=41
SY seg21=31
SY seg28=25
GW	10	seg_feed	-D	0	feed_h	D	0	feed_h	wire_r
GW	1	seg14	D	0	z14	L14	0	z14	wire_r
GW	2	seg14	-D	0	z14	-L14	0	z14	wire_r
GW	3	seg21	D	0	feed_h	x21	0	z21	wire_r
GW	4	seg21	-D	0	feed_h	-x21	0	z21	wire_r
GW	5	seg28	D	0	feed_h	x28	0	z28	wire_r
GW	6	seg28	-D	0	feed_h	-x28	0	z28	wire_r
GE	1
GN	2	0	0	0	13	0.005
EK
EX	0	10	3	0	1	0	0
FR	0	0	0	0	f14	0
EN