ANTENNA X72808XL3Q
DESCRIPTION
Radiator
Number of yagi elements
Boomlength (mm)
Double rectangle
27 + radiator
2825
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ANTENNA X72808XL3Q |
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DESCRIPTION |
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Radiator |
Number of yagi elements |
Boomlength (mm) |
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Double rectangle |
27 + radiator |
2825 |
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PERFORMANCES (loss included, KF2YN correction applied) |
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G (dBi) |
F/B (dB) |
F/Sh (dBi) |
F/Sv (dBi) |
Hor lobe (◦) |
Ver lobe (◦) |
Ta (K) |
Tlos (K) |
G/T (dB) |
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17.55 |
34.65 |
25.58 |
17.63 |
28.6 |
23.4 |
28.5 |
2.4 |
+3.01 |
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DIMENSIONS |
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Element |
Ref |
De |
D1, D2 |
D3,D4 |
D5,D6 |
D7,D8 |
D9,D10 |
D11,D12 |
D13,D14 |
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Position |
0 |
128 |
195 |
324 |
481 |
608 |
776 |
1014 |
1266 |
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Length |
331 |
272.5 |
295.5 |
290.5 |
287.5 |
284 |
281 |
279.5 |
277.5 |
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Height |
0 |
±80 |
±67 |
±112 |
±146 |
±180 |
±200 |
±233 |
±257 |
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Element |
D15,D16 |
D17,D18 |
D18,D20 |
D21,D22 |
D23,D24 |
D25.D26 |
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Position |
1526 |
1788 |
2056 |
2336 |
2604 |
2825 |
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Length |
276.5 |
274 |
269 |
265 |
263 |
256 |
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Height |
±268 |
±274 |
±278 |
±278 |
±271 |
±255 |
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Remark All elements made of Al rods Ǿ8 mm All dimensions given in milimetres No boom correction included. |
Ref = Reflector De = Dipole (radiator) D = Director |
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CONSTRUCTION OF RADIATOR |
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Material: Aluminum rod Ø= 8 mm |
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H = 272.5 mm |
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V = 80 mm |
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DIAGRAMS |
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Horizontal and verticall pattern in free space, no loss condition |
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WORKING CONDITION |
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Frequency bandwidth for SWR=1.5 (MHz) |
Z (Ώ) at 432.100 MHz |
SWR at 145.000 MHz |
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Lowest |
Highest |
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411.000 |
441.500 |
201.3 |
1.02:1 |
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SWR DIAGRAMS (loss included for Al) |
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SWR curve for amateur bandwidth 432 – 435 MHz |
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Frequency bandwidth for SWR = 1.5 |
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COMPARISON (inserted in a part of VE7BQH table, where it belongs according to its boom length) |
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TYPE OF ANTENNA |
SINGLE ANTENA |
FOUR ANTENNAS IN H-STACK |
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L (λ) |
GAIN (dBi) |
Z (ohms) |
VSWR Bandwidth |
E (m) |
H (m) |
Ga (dBd) |
Tlos (K) |
Ta (K) |
G/T (dB) |
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YU7EF EF7013M-6 |
3.83 |
16.11 |
49.4 |
1.06:1 |
1.33 |
1.25 |
22.01 |
4.7 |
32.9 |
6.84 |
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F9FT 19 |
4.02 |
15.96 |
55.7 |
1.14:1 |
1.33 |
1.26 |
21.88 |
6.1 |
39.1 |
5.96 |
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DG7YBN Tonna 19 mod |
4.02 |
16.17 |
44.7 |
1.15:1 |
1.35 |
1.27 |
22.07 |
6.1 |
33.8 |
6.82 |
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InnoV 14 LFA |
4.03 |
16.46 |
52.6 |
1.14:1 |
1.38 |
1.32 |
22.31 |
4.5 |
30.0 |
7.42 |
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DG7YBN 14 |
4.06 |
16.38 |
49.4 |
1.51:1 |
1.38 |
1.31 |
22.30 |
3.5 |
30.7 |
7.42 |
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X72808XL3Q |
4.07 |
17.55 |
201.3 |
1.02:1 |
1.74 |
1.86 |
23.64 |
2.4 |
26.2 |
9.46 |
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YU7EF EF7014M-6 |
4.24 |
16.50 |
49.5 |
1.11:1 |
1.39 |
1.2 |
22.39 |
4.5 |
33.3 |
7.17 |
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RA3AQ AQ70-14f |
4.30 |
16.63 |
52.8 |
1.09:1 |
1.42 |
1.34 |
22.54 |
6.9 |
33.6 |
7.28 |
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KF2YN Boxkite 16 |
4.37 |
18.02 |
49.1 |
1.06:1 |
1.74 |
1.61 |
23.85 |
10.2 |
41.2 |
7.71 |
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I0JXX 16JXX70 |
4.46 |
16.53 |
201.8 |
1.05:1 |
1.41 |
1.33 |
22.44 |
4.9 |
33.6 |
7.18 |
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EAntenna 432LFA15 |
4.48 |
15.66 |
48.4 |
1.25:1 |
1.22 |
1.14 |
21.36 |
4.0 |
28.5 |
6.82 |
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InnoV 15 LFA |
4.59 |
16.68 |
51.1 |
1.08:1 |
1.42 |
1.34 |
22.57 |
4.8 |
30.0 |
7.81 |
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YU7EF EF7015M-5 |
4.69 |
16.80 |
49.5 |
1.03:1 |
1.43 |
1.36 |
22.66 |
5.4 |
33.6 |
7.40 |
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WiMo 15 (YU7EF) |
4.89 |
17.06 |
174.5 |
3.05:1 |
1.46 |
1.30 |
22.87 |
4.3 |
30 |
8.10 |
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InnoV 16 LFA |
5.19 |
17.27 |
48.4 |
1.19:1 |
1.50 |
1.43 |
23.15 |
4.8 |
29.7 |
8.43 |
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*InnoV 17 LFA |
5.33 |
17.25 |
49.9 |
1.03:1 |
1.45 |
1.45 |
23.11 |
4.3 |
29.5 |
8.41 |
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YU7EF EF7017M-5 |
5.56 |
17.41 |
50.7 |
1.06:1 |
1.52 |
1.44 |
23.22 |
5.6 |
33.4 |
7.98 |
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*KF2YN Polly 18 CR |
5.69 |
17.79 |
48.1 |
1.18:1 |
1.95 |
1.95 |
23.96 |
3.7 |
31.4 |
9.00 |
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RA3AQ AQ70-18f |
5.74 |
17.76 |
51.7 |
1.08:1 |
1.59 |
1.53 |
23.64 |
6.1 |
32.6 |
8.51 |
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InnoV 18 LFA |
5.76 |
17.49 |
49.8 |
1.05:1 |
1.52 |
1.45 |
23.33 |
4.3 |
28.9 |
8.72 |
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KF2YN Boxkite 22 |
6.70 |
19.26 |
52.1 |
1.17:1 |
1.99 |
1.90 |
25.14 |
10.8 |
40.2 |
9.11 |
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InnoV 20 LFA |
6.99 |
18.28 |
50.5 |
1.09:1 |
1.73 |
1.67 |
24.31 |
5.0 |
28.1 |
9.82 |
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RA3AQ AQ70-21f |
7.14 |
18.54 |
52.3 |
1.07:1 |
1.73 |
1.67 |
24.41 |
6.9 |
31.0 |
9.51 |
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Z(ohms) - measured on 432.100 MHz Bandwidth – VSWR measured on 435.000 MHz |
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STACKING (ALL DATA GIVEN IN ACCORDANCE WITH KF2YN CORRECTION, LOSS INCLUDED) |
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RECOMMENDED STACKING DISTANCES |
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Two antennas vertically (mm) |
Two antennas horizontally (mm) |
Four antennas in H-stack (mm) |
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Horizontal distance |
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1740 |
1740 |
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Vertical distance |
1860 |
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1860 |
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TWO ANTENNAS STACKED VERTICALLY |
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DISTANCE |
G |
TA |
Tloss |
G/T |
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1860 |
20.60 |
26.3 |
2.4 |
+6.41 |
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Two antennas stacked vertically |
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TWO ANTENNAS STACKED HORIZONTALLY |
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DISTANCE |
G |
TA |
Tloss |
G/T |
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1740 |
2059 |
28.4 |
2.4 |
+6.06 |
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Two antennas stacked horizontally |
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FOUR ANTENNAS IN H-STACK |
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DISTANCE |
G |
TA |
Tloss |
G/T |
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H = 1740 |
23.64 |
26.2 |
2.4 |
+9.46 |
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V = 1860 |
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Four antennas in H-stack |
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