ANTENNA X74808XL1Q
DESCRIPTION
Radiator
Number of yagi elements
Boomlength (mm)
Double rectangle
47 + radiator
5835
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ANTENNA X74808XL1Q |
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DESCRIPTION |
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Radiator |
Number of yagi elements |
Boomlength (mm) |
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Double rectangle |
47 + radiator |
5835 |
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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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19.95 |
33.38 |
19.30 |
15.75 |
21.0 |
18.4 |
26.6 |
3.0 |
+5.70 |
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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 |
130 |
195 |
322 |
481 |
608 |
776 |
1014 |
1266 |
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Length |
330 |
271.5 |
295.5 |
291 |
288.5 |
283.5 |
281 |
279.5 |
277.5 |
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Height |
0 |
±80 |
±66.5 |
±113 |
±147 |
±180 |
±200 |
±233 |
±258 |
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Element |
D15,D16 |
D17,D18 |
D19,D20 |
D21,D22 |
D23,D24 |
D25,D26 |
D27,D28 |
D29,D30 |
D31,D32 |
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Position |
1522 |
1788 |
2056 |
2342 |
2626 |
2896 |
3198 |
3492 |
3790 |
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Length |
277 |
274.5 |
269.5 |
266.5 |
265 |
261.5 |
256.5 |
255.5 |
253.5 |
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Height |
±272 |
±278 |
±285 |
±285 |
±285 |
±283 |
±280 |
±275 |
±269 |
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Element |
D33,D34 |
D35,D36 |
D37,D38 |
D39,D40 |
D41,D42 |
D43,D44 |
D45,D46 |
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Position |
4088 |
4392 |
4698 |
4988 |
5292 |
5586 |
5835 |
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Length |
251.5 |
249.5 |
249.5 |
249.5 |
249.5 |
245.5 |
244.5 |
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Height |
±267 |
±265 |
±263 |
±262 |
±259 |
±256 |
±248 |
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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 = 271.5 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 |
441.700 |
199.5 |
1.07:1 |
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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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I0JXX 25JXX70 |
7.91 |
18.53 |
198.6 |
1.12:1 |
1.74 |
1.68 |
24.41 |
5.6 |
32.7 |
9.26 |
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KF2YN Polly 24 CR |
8.15 |
19.15 |
51.8 |
1.14:1 |
1.90 |
1.90 |
25.11 |
3.7 |
31.0 |
10.20 |
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+YU7XL QY72410417 |
8.35 |
19.01 |
199.0 |
1.23:1 |
2.00 |
1.90 |
24.99 |
3.4 |
27.1 |
10.67 |
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InnoV 23 LFA |
8.40 |
19.16 |
45.2 |
1.23:1 |
1.87 |
1.82 |
25.08 |
5.6 |
28.2 |
10.58 |
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X74808XL1Q |
8.41 |
19.95 |
199.5 |
1.07:1 |
2.12 |
2.62 |
26.04 |
3.0 |
27.0 |
11.73 |
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DJ9BV BVO70-8.5wl |
8.43 |
19.14 |
203.9 |
1.45:1 |
1.95 |
1.90 |
25.13 |
5.0 |
37.1 |
9.44 |
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DJ9BV OPT70-8.5wl |
8.44 |
19.04 |
186.1 |
1.56:1 |
1.80 |
1.75 |
24.87 |
4.9 |
33.9 |
9.57 |
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EAntenna 432LFA23 |
8.44 |
18.96 |
47.8 |
3.99:1 |
1.90 |
1.84 |
24.89 |
8.1 |
29.6 |
10.17 |
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YU7EF EF7023B-5 |
8.47 |
18.98 |
48.6 |
1.21:1 |
1.79 |
1.73 |
24.78 |
6.4 |
30.2 |
9.99 |
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RA3AQ AQ70-24f |
8.52 |
19.22 |
52.0 |
1.13:1 |
1.87 |
1.82 |
24.82 |
6.1 |
29.0 |
10.20 |
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InnoV 24 LFA |
8.89 |
19.32 |
46.4 |
1.19:2 |
1.92 |
1.87 |
25.25 |
5.9 |
28.0 |
10.78 |
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YU7EF EF7024B-5 |
8.90 |
19.19 |
50.1 |
1.60:1 |
1.84 |
1.79 |
25.00 |
7.6 |
31.5 |
10.04 |
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+YU7XL QY72810721 |
10.01 |
19.64 |
198.1 |
1.29:1 |
2.22 |
2.06 |
25.65 |
3.4 |
27.2 |
11.30 |
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YU7EF EF7027B-5 |
10.18 |
19.67 |
50.3 |
1.64:1 |
1.94 |
1.89 |
25.47 |
7.8 |
32.2 |
10.39 |
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WiMo 27 (YU7EF) |
10.43 |
19.43 |
191.8 |
2.72:1 |
1.85 |
1.80 |
25.08 |
4.3 |
27.5 |
10.70 |
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K1FO 33 |
10.61 |
20.03 |
200.5 |
1.19:1 |
2.08 |
2.04 |
25.95 |
6.1 |
31.8 |
10.93 |
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RA3AQ AQ70-30f |
11.39 |
20.33 |
51.6 |
1.10:1 |
2.08 |
2.04 |
26.15 |
5.8 |
28.3 |
11.61 |
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InnoV 30 LFA |
11.64 |
20.45 |
49.6 |
2.38:1 |
2.27 |
2.22 |
26.42 |
6.7 |
30.6 |
11.56 |
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*YU7EF EF7032-5 |
12.49 |
19.97 |
51.3 |
3.44:1 |
1.94 |
1.90 |
25.59 |
6.6 |
29.9 |
10.84 |
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InnoV 33 LFA |
13.03 |
20.85 |
50.1 |
1.17:1 |
2.32 |
2.29 |
26.81 |
5.3 |
28.8 |
12.22 |
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DJ9BV OPT70-13wl |
13.29 |
20.85 |
183.0 |
1.44:1 |
2.35 |
2.29 |
26.80 |
5.2 |
33.4 |
11.56 |
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I0JXX 39JXX70 |
13.53 |
20.16 |
194.0 |
1.19:1 |
2.00 |
1.97 |
25.86 |
6.3 |
30.9 |
10.97 |
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InnoV 34 LFA |
13.54 |
20.89 |
49.4 |
3.05:1 |
2.46 |
2.43 |
26.87 |
7.5 |
31.6 |
11.87 |
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InnoV 35 LFA |
14.00 |
20.95 |
49.1 |
2.69:1 |
2.46 |
2.43 |
26.93 |
7.5 |
31.4 |
11.96 |
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InnoV 38 LFA |
15.41 |
21.45 |
49.3 |
1.87:1 |
2.30 |
3.35 |
27.23 |
6.9 |
28.9 |
12.62 |
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InnoV 40 LFA |
16.26 |
21.67 |
48.0 |
2.27:1 |
2.69 |
2.66 |
27.67 |
7.5 |
29.4 |
12.99 |
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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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2120 |
2120 |
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Vertical distance |
2620 |
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2620 |
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TWO ANTENNAS STACKED VERTICALLY |
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DISTANCE |
G |
TA |
Tloss |
G/T |
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2620 |
23.01 |
27.0 |
3.0 |
+8.70 |
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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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2120 |
22.98 |
26.5 |
3.0 |
+8.74 |
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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 = 2120 |
26.04 |
27.0 |
3.0 |
+11.73 |
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V = 2620 |
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Four antennas in H-stack |
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