VE7BQH'S G/T SIMULATIONS OF A 4
BAY ARRAY
OF YAGI ANTENNAS ON 2 METERS AT
144.1 MHz
1
YAGI
4 YAGI
TYPE
OF L
GAIN
E H
GAIN
Tlos
Ta
G/T
ANTENNA
(WL) (dBd) (M)
(M)
(dBd) (K) (K)
W1JR
8 MOD 1.80 11.17 3.09
2.76
17.15 3.04 266.57 -4.96
DJ9BV
1.8 1.81 11.38
3.16
2.80 17.31 3.16
267.12
-4.81
BQH8A
1.87 11.63 3.27
2.96
17.64 6.77 262.35 -4.40
M2
9 2.12
12.08
3.34 3.04 18.08
8.77
254.38 -3.83
DJ9BV
2.1 2.14 11.92
3.33
3.04 17.92 4.66
260.72
-4.10
*OZ5HF
9 2.16 11.75
2.70
2.50 17.21 2.95
264.46
-4.87
OZ5HF
9 2.16 11.75
3.25
2.96 17.71 2.99
262.13
-4.33
F9FT
11 2.17 11.71
3.27
2.97 17.70 5.21
262.64
-4.35
*CC 13B2
2.17 11.83 2.90
2.79
17.67 4.40 256.63 -4.28
CC
13B2 2.17 11.83
3.33
3.04 17.83 4.46
263.15
-4.23
*CC 215WB
2.19 11.86 3.05
3.05
17.80 4.34 286.14 -4.62
CC
215WB 2.19 11.86
3.48
3.19 17.87 4.40
287.83
-4.58
Eagle
10 2.38 12.28
3.44
3.15 18.29 6.07
249.46
-3.54
DK7ZB
9 2.39 12.11
3.34
3.05 18.03 3.95
250.19
-3.81
*Flexa
224 2.49 11.90
3.50
3.30 18.01 8.29
264.66
-4.07
Flexa
224 2.48 11.90
3.30
3.31 17.87 8.32
257.77
-4.10
K5GW
10 2.49 12.57
3.45
3.16 18.53 5.72
241.20
-3.15
#K5GW
10 2.49 12.57
3.30
3.30 18.58 5.76
242.35
-3.12
K1FO
12 2.53 12.49
3.46
3.18 18.44 3.51
245.43
-3.31
I0JXX
12 2.68 12.69
3.59
3.32 18.68 4.45
247.49
-3.11
BQH12J
2.80 12.82 3.66
3.40
18.85 3.09 252.88 -3.03
#BQH12J
2.80 12.82 3.53
3.53
18.88 3.06 252.93 -3.06
*M2 12
2.84 12.79 3.05
3.05
18.59 5.19 237.40 -3.02
M2
12 2.84
12.79
3.48 3.21 18.71
5.15
237.98 -2.91
DK7ZB
10 2.87 13.15
3.78
3.52 19.15 5.99
251.35
-2.71
WB9UWA
12 2.90 12.82
3.45
3.17 18.73 6.93
227.71
-2.70
BQH
13 2.92
13.09
3.69 3.44 19.07
3.92
241.77 -2.62
#BQH 13
2.92 13.09 3.57
3.57
19.11 3.95 243.09 -2.60
*M2 20
XPOL 2.97 13.19 3.65
3.65
19.20 6.74 252.79 -2.68
#M2 20
XPOL 2.97 13.19 3.65
3.65
19.20 6.74 252.79 -2.68
M2
20 XPOL 2.97 13.19 3.77
3.52
19.16 6.77 251.00 -2.69
*BVO-3WL
3.00 13.50 3.90
3.70
19.48 5.35 264.59 -2.60
BVO-3WL
3.00 13.50 4.01
3.77
19.49 5.38 266.39 -2.62
#BVO-3WL
3.00 13.50 3.89
3.89
19.52 5.45 265.97 -2.58
*CD15LQD
3.11 12.87 4.00
3.80
18.96 4.57 261.85 -3.08
CD15LQD
3.11 12.87 3.68
3.42
18.86 4.49 259.53 -3.14
CD15LQD
MOD 3.11 13.24 3.83
3.58
19.24 3.73 253.86 -2.66
MBI
FT17 3.12 13.34
3.84
3.59 19.31 6.02
246.36
-2.46
*CC3219
3.14 12.66 4.27
3.66
18.64 4.62 349.69 -4.65
CC3219
3.14 12.66 4.05
3.80
18.65 4.65 354.61 -4.70
CC3219
MOD 3.14 13.32 3.91
3.67
19.32 3.74 258.52 -2.66
*F9FT
17 3.15 12.87
3.68
3.50 18.92 5.74
243.96
-2.81
F9FT
17 3.15 12.87
3.57
3.30 18.84 5.74
240.69
-2.83
DJ9BV
3.2 3.22 13.36
3.85
3.58 19.34 3.99
246.42
-2.42
K1FO
14 3.25 13.36
3.78
3.54 19.30 4.26
243.48
-2.42
MBI
3.4 3.41 13.69
3.88
3.63 19.63 7.68
235.12
-1.94
*SM5BSZ
11 3.51 13.86
3.50
3.50 19.71 3.16
232.02
-1.80
SM5BSZ
11 3.51 13.86
3.96
3.72 19.79 3.13
238.58
-1.84
*SM5BSZ
11A 3.52 13.97 4.00
4.00
19.96 3.13 244.17 -1.77
SM5BSZ
11A 3.52 13.97 4.05
3.81
19.91 3.07 244.00 -1.82
17LQD
EKM 3.59 13.37 3.83
3.59
19.35 4.57 252.49 -2.53
17LQDE
BQH 3.59 13.79 4.04
3.81
19.77 3.95 248.40 -2.04
DJ9BV
3.6 3.61 13.73
4.00
3.77 19.64 4.25
258.21
-2.33
K1FO
15 3.65 13.78
3.94
3.70 19.70 3.33
238.55
-1.93
DK7ZB
12 3.83 14.30
4.34
4.12 20.26 5.66
251.50
-1.60
DJ9BV
OPT 3.99 14.22
4.29
4.08 20.18 4.99
248.48
-1.63
#DJ9BV
OPT 3.99 14.22
4.19
4.19 20.21 5.03
247.16
-1.57
#SV 2SA13
4.01 14.46 4.20
4.20
20.44 4.67 246.84 -1.34
SV
2SA13 4.01 14.46
4.37
4.16 20.43 4.67
247.35
-1.36
DJ9BV
4.0 4.02 14.07
4.15
3.92 19.98 5.67
255.50
-1.95
HG215DX
4.02 14.20 4.25
4.03
20.14 6.44 258.47 -1.84
CC3219
MOD 4.05 14.20 4.34
4.13
20.17 4.28 256.17 -1.77
*CC4218XL
4.15 14.14 4.08
3.85
20.03 7.25 265.93 -2.07
CC4218XL
4.15 14.14 4.45
4.23
20.11 7.17 266.22 -2.00
CC4218
MOD 4.18 14.29 4.24
4.02
20.24 5.25 244.97 -1.51
K1FO
17 4.41 14.44
4.22
4.00 20.35 4.34
234.51
-1.21
DJ9BV
4.4 4.42 14.36
4.28
4.06 20.25 6.19
256.51
-1.70
SHARK
20 4.46 14.39
4.32
4.10 20.26 2.90
264.04
-1.81
I0JXX
16 4.47 14.39
4.17
3.94 20.32 6.09
223.60
-1.03
*CC17B2
4.51 14.53 3.66
3.51
20.22 4.83 233.29 -1.31
CC17B2
4.51 14.53 4.28
4.06
20.47 4.99 234.82 -1.08
DK7ZB
14 4.71 15.07
4.87
4.67 21.07 9.12
249.36
-0.77
K1FO
18 4.77 14.72
4.35
4.14 20.63 4.54
234.66
-0.93
*M2 28
XPOL 4.80 15.22 4.50
4.50
21.14 17.04 258.67 -0.84
#M2 28
XPOL 4.80 15.22 4.76
4.76
21.22 17.15 257.77 -0.76
M2
28 XPOL 4.80 15.22 4.86
4.66
21.19 17.11 257.51 -0.77
HG217DX
4.82 14.81 4.63
4.43
20.78 8.14 256.05 -1.16
DJ9BV
4.8 4.83 14.65
4.40
4.18 20.57 5.85
255.84
-1.37
*M2 5WL
4.83 14.80 4.15
3.84
20.56 8.49 254.92 -1.36
M2
5WL 4.83
14.80
4.56 4.35 20.74
8.70
251.18 -1.11
*SM5BSZ
14A 4.89 15.14 4.00
4.00
20.93 4.33 232.02 -0.58
SM5BSZ
14A 4.89 15.14 4.54
4.33
21.03 4.43 238.02 -0.59
*SM5BSZ
14 4.95 15.29
5.20
5.20 21.37 3.13
246.72
-0.41
SM5BSZ
14 4.95 15.29
4.72
4.51 21.19 3.02
233.77
-0.68
SM2CEW
19 4.98 14.91
4.47
4.26 20.84 9.38
233.77
-0.70
#SM2CEW
19 4.98 14.91
4.37
4.37 20.87 9.00
232.88
-0.66
*BVO-5WL
5.02 15.05 4.58
4.40
20.99 5.21 243.42 -0.73
#BVO-5WL
5.02 15.05 4.59
4.59
21.04 5.24 242.36 -0.66
BVO-5WL
5.02 15.05 4.69
4.49
21.01 5.23 242.70 -0.70
K5GW
17 5.06 14.99
4.64
4.44 20.96 6.16
244.55
-0.78
K1FO
19 5.18 15.01
4.47
4.27 20.92 4.04
232.19
-0.59
#RU1AA
15 5.27 15.55
4.85
4.85 21.55 6.02
235.76
-0.03
RU1AA
15 5.27 15.55
4.85
4.65 21.50 5.99
236.28
-0.09
*M2 18XXX
5.32 15.07 4.27
3.96
20.85 7.90 243.30 -0.87
M2
18XXX 5.32 15.07
4.55
4.35 21.01 7.95
240.56
-0.66
M2
32 XPOL 5.62 15.70 5.23
5.04
21.69 15.02 250.74 -0.16
#M2 32
XPOL 5.62 15.70 5.13
5.13
21.71 15.04 251.20 -0.15
*M2 19XXX
5.73 15.41 4.27
4.04
21.15 8.75 238.80 -0.49
M2
19XXX 5.73 15.41
4.70
4.51 21.36 8.75
235.52
-0.22
#M2 32
XPOL 5.73 15.88 5.07
5.07
21.87 16.03 248.46 +0.06
M2
32 XPOL 5.73 15.88 4.98
5.16
21.84 16.03 248.11 +0.04
AF9Y
22 6.15 15.75
5.04
4.86 21.72 10.04
230.73
+0.23
MBI
6.6 6.6
16.14
5.46 5.29 22.14
13.09
238.73 +0.51
#MBI 6.6
6.6 16.14 5.38
5.38
22.17 13.07 239.28 +0.53
BQH
25 7.29
16.31
5.22 5.04 22.25
9.83
224.18 +0.89
#BQH 25
7.29 16.31 5.13
5.13
22.28 9.86 224.61 +0.91
K2GAL
21 7.65 16.80
5.75
5.59 22.75 19.58
245.81
+0.99
M2
8WL 7.71
16.55
5.28 5.10 22.40
9.52
231.46 +0.90
Legend:
L = Length in Wavelengths
Gain = Gain in dBd of a single antenna
E = E plane (Horizontal) stacking in Meters.
H = H plane (Vertical) stacking in Meters.
Ga = Gain in dBd of a 4 bay array
Tlos = The internal resistance of the antenna in degrees Kelvin.
Ta = The total temperature of the antenna or array in
degrees Kelvin. This
includes all the side lobes, rear
lobes and internal resistance of the
antenna or array.
G/T = Figure of merit used to determine the receive capability of
the antenna
or array = (Ga + 2.15) - (10*log
Ta). The more positive figure the better.
Notes:
1. The Program used to
calculate E/H Stacking,G,Ga and G/T was YAGI
ANALYSIS
3.54 by Goran Stenberg,SM2IEV.
2. Temperatures used:
Tsky=200 degrees;Tearth=1000 degrees
3. All dipoles have been
adjusted to give a J of under +/- .5
4. No stacking harness
losses or H frame effects are included in the
gain
figures.
5. All stacking dimensions
EXCEPT those marked with a "*" and "#" are
calculated
from the DL6WU stacking formula.
6. Antennas marked with a
"*" have stacking dimensions recommended by
the
manufacturer or designer.
7. Antennas marked with a
"#" have stacking dimensions for XPOL
antennas
by VE7BQH.
8. Manufacturer/Designer
Legend:
AF9Y = AF9Y
BVO =
Eagle/DJ9BV
Flexa = FlexaYagi
BQH =
VE7BQH
I0JXX = I0JXX
CC =
Cushcraft
K1FO = K1FO
CC
MOD =
VE7BQH
K2GAL = K2GAL
CD = CUE
DEE
K5GW = Texas Towers/K5GW
CD
MOD =
VE7BQH
M2 = M^2
DJ9BV =
DJ9BV
MBI = F/G8MBI
DJ9BV OPT
=
DJ9BV
OZ5HF = Vargarda
DK7ZB =
DK7ZB
RU1AA = RU1AA
EKM
MOD =
SM2EKM
SHARK = SHARK (Italian)
F9FT =
F9FT
SM2CEW = SM2CEW/VE7BQ
HG =
HYGAIN
SV = Svenska
Antennspecialisten AB
W1JR = VE7BQH (Mininec error)
LIONEL H. EDWARDS
VE7BQH
Issue November 29 2000