multdph.nec

zip contains tool for Antenna Modelling with examples

CM Multi-Band TRAP-DP (40m,20m,15m,10m)
CE
SY t=0.1	' Delta length to centre trap.

SY L28=2.648
GW 1 11	0 -(L28-t)  10 0 (L28-t) 10 .0015
GW 11 1 0 -(L28-t)  10 0 -(L28+t) 10 .0015
GW 12 1 0 (L28-t)  10 0 (L28+t) 10 .0015

SY L21=3.281
GW 3 1 0.0  (L28+t)  10.0 0.0  (L21-t)  10.0  .0015
GW 4 1 0.0 -(L28+t)  10.0 0.0 -(L21-t)  10.0  .0015
GW 31 1 0 (L21-t)  10 0 (L21+t) 10 .0015
GW 41 1 0 -(L21-t)  10 0 -(L21+t) 10 .0015

SY L14=4.403
GW 5 2 0.0  (L21+t)  10.0 0.0  (L14-t)  10.0  .0015
GW 6 2 0.0 -(L21+t)  10.0 0.0 -(L14-t)  10.0  .0015
GW 51 1 0 (L14-t)  10 0 (L14+t) 10 .0015
GW 61 1 0 -(L14-t)  10 0 -(L14+t) 10 .0015

SY L7=6.579
GW 7 3 0.0  (L14+t)  10.0 0.0  (L7)  10.0  .0015
GW 8 3 0.0 -(L14+t)  10.0 0.0 -(L7)  10.0  .0015

GE 0
EX 0 1  6  0 -1. 0.0

LD 6 11  1  1 100 1.07uH 30pF
LD 6 12  1  1 100 1.07uH 30pF
LD 6 31  1  1 100 1.9uH 30pF
LD 6 41  1  1 100 1.9uH 30pF
LD 6 51  1  1 100 10.7uH 12pF
LD 6 61  1  1 100 10.7uH 12pF

GN 2 0 0 0 13 .005
FR 0 1 0 0 7.01 1
EN