On 11/28/16 11:34 AM, jimlux wrote:
> On 11/28/16 11:10 AM, Mike Smith VE9AA wrote:
>> Greeting Antenna Gurus,
Here's the model
CM Tower with 4 vertical V dipoles ' Comment cards
CM based on K3LR's article in 1994 QST
CE
' End of comment
'
SY TH=190/3.28'tower height
SY TR=1/3.28 'Tower Radius
SY DL=131/3.28 'Dipole element length
SY DA=45 'dipole angle
SY DR=.001 'Dipole radius (1mm)
SY DS=95/3.28 'Spacing from tower for center of dipole
SY DH=95/3.28 'height of dipole center above ground
SY FL=175/.78/3.28 'Feedline length
GW 101 101 -sin(DA)*DL 0
cos(DA)*DL 0 0 .1 DR
' Wire 1, upper part
GW 111 101 0 0 -0.1
-sin(DA)*DL 0 -cos(DA)*DL DR
GW 121 1 0 0 0.1
0 0 -0.1 DR 'feedpoint
GW 122 1 1 0 0.05
1 0 -0.05 .001
GM 0 0 0 0 0
DS 0 DH 0
'move dipole away from tower and up to height
GM 100 3 0 0 90
0 0 0 'make 4 copies
GW 900 100 0 0 0
0 0 th tr 'tower
GE 1
'
GN 2 0 0 0
13 0.005
EX 0 122 1 00 1
0
' Voltage source (1+j0) at wire 1 segment 51
TL 121 1 122 1 50
FL 'transmission line
TL 221 1 222 1 50
FL
TL 321 1 322 1 50
FL
TL 421 1 422 1 50
FL
LD 5 0 0 0
58000000 '20% of copper (steel)
LD 5 900 0 0
37700000 'Tower
LD 0 222 1 1 1e6
LD 0 322 1 1 1e6
LD 0 422 1 1 1e6
'
FR 0 1 0 0
1.84 0
' Set design frequency (300 Mc).
'
EN