WordPress has trouble with simple .txt file attachments so the various NEC models will be included here.
QuadPod Steerable Vertical
CM 20m Quadpod with T-lines and matching components - Gary Rondeau AF7NX
CE
SY freq = 14.1 'Mhz
SY lambda = 300/freq
SY L4 = lambda/4
SY Nreflector=2
SY drt = 0.3 'tower offset for reflector
SY dr = 0.05 'small number for wiring
SY ref=1.02 'Reflector Tuning Parameter
SY phr=22. 'reflector top angle
SY lref = 2.0*L4*ref 'length reflector
SY Zref = lref*cos(phr)
SY Rref = lref*sin(phr)
SY HB = 1. 'Base height meters
SY H = HB + Zref
SY Hfeet = H/0.3048
SY LWfeet = lref/0.3048
SY Zline = 300
SY Zmain = 50
SY Tline = 43
SY Tfeed = lambda/4
SY nseg = 75
SY StakeRft = H*tan(phr) /0.3048
SY Lmatch=1.00e-6 '0.5e-6
SY Cmatch=3.0e-11 '32.0e-12
GW 1 101 drt 0 H drt + Rref 0 HB #14 'reflector
GW 2 101 0 drt H 0 drt + Rref HB #14 'reflector
GW 3 101 -drt 0 H -(drt + Rref) 0 HB #14 'reflector
GW 4 101 0 -drt H 0 -(drt + Rref) HB #14 'reflector
GW 30 1 -dr/2 0 1. dr/2 0 1. #14 'Source point on the antenna
GW 31 1 -dr/2 0 .75 dr/2 0 0.75 #14 'end of tline for wire2
GW 32 1 -dr/2 0 .5 dr/2 0 .5 #14 'end of tline for wire3
GW 33 1 -dr/2 0 .25 dr/2 0 .25 #14 'end of tline for wire4
GW 40 1 -dr/2 5 .2 dr/2 5 .2 #14 'radio end of main T-line
GW 35 1 -dr/2 0 1 0 dr/2 1 #14 'end of tline for wire1
GW 36 1 0 dr/2 1 dr/2 0 1 #14 'mathcing inductor series connection
GW 37 1 0 dr/2 1 -dr/2 0 1+dr/2 #14 'necessary spur
GW 38 1 -dr/2 0 1+dr/2 -dr/2 0 1 #14 'matching capacitor segment
GW 39 1 -dr/2 0 .1 dr/2 0 .1 #14 'antenna end of main T-line
GE 1
LD 5 0 0 0 58000000
LD 7 0 0 0 3.5 1.5e-3
LD 1 36 1 0 1.e6 Lmatch
LD 1 38 1 0 1.e6 0 Cmatch
GN 2 0 0 0 13 0.005
EK
EX 0 30 1 0 1 0 0 'Place source on Tag 40 if using main T-line
TL 2 nseg 31 1 Zline Tfeed 0 0 0 0 'Change Tag2 from 31 to 35 to make this wire active also
TL 3 nseg 32 1 Zline Tfeed 0 0 0 0 'Change Tag2 from 32 to 35 to make this wire active also
TL 4 nseg 33 1 Zline Tfeed 0 0 0 0 'Change Tag2 from 33 to 35 to make this wire active also
TL 1 nseg 35 1 Zline Tfeed 0 0 0 0 'Active wire
TL 39 1 40 1 Zmain Tline 0 0 0 0 'To add in the main tline - change Tag1 to 30 and place source on 40
FR 0 0 0 0 freq 0
EN
G5RV Model
CM G5RV family generic model - Gary Rondeau AF7NX
CE
SY H= 12.2 'Height ot top support
SY LX1=34.5 'Length of wire
SY LLL = 5.6 'Length of Ladder line (m)
SY ZLL = 300 'Impedance of Ladder line
SY VF = 0.88 'Velocity factor of Ladder line
SY LCOAX = 32 'Electrical Length of Coax feed to radio
SY ZCOAX = 75 'Impedance of Coax
GW 1 1 -0.05 0 H .05 0 H #14 'Feed
GW 2 100 -LX1/2 0 H -.05 0 H #14 'Left Wire
GW 3 100 0.05 0 H LX1/2 0 H #14 'Right Wire
GW 4 1 -0.05 0 H-LLL 0.05 0 H-LLL #14 'LL connection
GW 5 1 -.05 10 1 .05 10 1 #14 'Radio
GW 6 50 0.05 0 H-LLL 0.05 0 0 0.003 'Coax to Ground
GE 1
GN 2 0 0 0 13 0.005
EK
EX 0 5 1 0 1 0 0
TL 1 1 4 1 ZLL LLL/VF 0 0 0 0
TL 4 1 5 1 ZCOAX LCOAX 0 0 0 0
FR 0 0 0 0 14.07 0
EN
Squash Practice 