Protože v souvislosti se stále rozsáhlejším používáním programu WSJT nabývá na stále větší zajímavosti EME provoz
v pásmu 144 MHz, může se vám hodit tato tabulka VE7BQH, která ukazuje, jaké vlastnosti bude mít anténní soustava
složená ze 4 antén uvedených typů při daných, optimalizovaných vzdálenostech mezi anténami:
VE7BQH G/T chart (Issue 47 July 22, 2005)
G/T SIMULATIONS OF A 4 BAY ARRAY
OF YAGI ANTENNAS ON 2 METERS
144.1 MHz
TYPE OF L GAIN E H Ga 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
I0JXX 8 2.04 12.16 3.46 3.17 18.18 11.34 217.71 -3.05
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
RA3AQ-9 2.35 12.34 3.40 3.11 18.30 4.45 238.76 -3.33
#RA3AQ-9 2.35 12.34 3.26 3.26 18.37 4.44 240.91 -3.30
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
BQH 12J 2.80 12.82 3.66 3.40 18.85 3.09 252.88 -3.03
#BQH 12J 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
BQH 10 2.86 13.07 3.70 3.44 19.05 6.59 240.48 -2.62
#BQH 10 2.86 13.07 3.57 3.57 19.11 6.56 242.58 -2.59
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
WB9UWA 15 4.18 13.62 3.69 3.43 19.48 8.00 214.69 -1.69
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
#I0JXX 16 4.47 14.39 4.06 4.06 20.35 6.11 223.23 -0.99
*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
DK7ZB 17 5.81 15.69 5.19 5.01 21.67 15.67 233.94 +0.12
BVO-6WL 6.00 15.69 4.75 4.93 21.63 5.12 231.63 +0.13
#BVO-6WL 6.00 15.69 4.84 4.84 21.66 5.13 231.84 +0.15
AF9Y 22 6.15 15.75 5.04 4.86 21.72 10.04 230.73 +0.23
RA3AQ-18 6.28 16.11 5.13 4.96 22.05 4.97 227.80 +0.62
*RA3AQ-18 6.28 16.11 5.30 5.30 22.13 4.99 227.28 +0.71
#RA3AQ-18 6.28 16.11 5.05 5.05 22.08 4.98 227.31 +0.64
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(old) 7.71 16.55 5.28 5.10 22.40 9.52 231.46 +0.90
M2 8WL(new) 8.05 17.05 5.82 5.67 23.01 11.53 237.20 +1.40
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 is 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. Antennas marked with a "@" have some or all 10MM elements. All others
are 4MM to 6MM.
9. Manufacturer/Designer Legend:
AF9Y = AF9Y
BVO = Eagle/DJ9BV I0JXX = I0JXX
BQH = VE7BQH K1FO = K1FO
CC = Cushcraft K2GAL = K2GAL
CC MOD = VE7BQH K5GW = Texas Towers/K5GW
CD = CUE DEE M2 = M^2
CD MOD = VE7BQH MBI = F/G8MBI
DJ9BV = DJ9BV OZ5HF = Vargarda
DJ9BV OPT = DJ9BV RA3AQ = RA3AQ
DK7ZB = DK7ZB RU1AA = RU1AA
EKM MOD = SM2EKM SHARK = SHARK (Italian)
F9FT = F9FT SM2CEW = SM2CEW/VE7BQH
HG = HYGAIN SV = Svenska Antennspecialisten AB
Flexa = FlexaYagi W1JR = VE7BQH (Mininec error)
WB9UWA = WB9UWA
LIONEL H. EDWARDS
VE7BQH
Issue 47 July 22, 2005