ANTENNA QY20910XL2D4
ANTENNA QY20910XL2D4
PERFORMANCES:
|
No of ele |
L (mm) |
G (dBi) |
F/B (dB) |
F/Sh (dBi) |
F/Sv (dBi) |
Hor (◦) |
Ver (◦) |
Temp (◦K) |
G/T (dB) |
Tlos (K) |
|
9 |
4325 |
14.21 |
30.23 |
19.50 |
14.79 |
37.4 |
40.0 |
239.6 |
-9.58 |
3.4 |
WORKING CONDITION:
|
Frequency for SWR=1,5 (MHz) |
Z (Ώ) at 144.100 MHz |
SWR at 145.000 MHz |
||
|
Lowest |
Highest |
Bandwidth |
||
|
142.000 |
146.600 |
4.600 |
200.6 |
1.05:1 |
DIMENSIONS:
|
|
Ref |
De1 |
De2 |
D1 |
D2 |
D3 |
DQ1 |
DQ2 |
DQ3 |
DQ4 |
All elements made of Al tubes Ǿ10 mm The height of rectangles 522 mm All dimensions given in milimetres |
|
Pos |
0 |
60 |
290 |
385 |
733 |
1341 |
2065 |
2815 |
3624 |
4325 |
|
|
Length |
1012 |
1020 |
800 |
931 |
931 |
896 |
518 |
504 |
490 |
478 |
No boom correction included.
COMPARISON
|
TYPE OF ANTENNA |
SINGLE ANTENA |
FOUR ANTENNAS IN H-STACK |
||||||||
|
L (λ) |
GAIN (dBd) |
Z (ohms) |
VSWR Bandwidth |
E (m) |
H (m) |
Ga (dBd) |
Tlos (K) |
Ta (K) |
G/T (dB) |
|
|
DG0OPK 9 |
2.07 |
11.45 |
28.4 |
1.11:1 |
3.04 |
2.72 |
17.34 |
5.7 |
231.9 |
-4.16 |
|
QY20910XL2D4 |
2.08 |
12.06 |
200.6 |
1.05:1 |
3.66 |
3.12 |
18.14 |
3.4 |
239.9 |
-3.51 |
|
DK7ZB 8 |
2.09 |
12.01 |
28.0 |
1.26:1 |
3.40 |
3.10 |
18.02 |
4.8 |
253.6 |
-3.87 |
|
G0KSC 9OWA |
2.09 |
11.99 |
49.1 |
1.30:1 |
3.33 |
3.04 |
17.96 |
4.9 |
247.0 |
-3.82 |
|
RA3AQ 9S |
2.12 |
12.04 |
47.1 |
1.08:1 |
3.35 |
3.06 |
18.02 |
4.7 |
246.5 |
-3.75 |
|
M2 9SSB |
2.12 |
11.96 |
200.6 |
1.26:1 |
3.33 |
3.04 |
17.92 |
10.8 |
245.9 |
-3.84 |
|
WiMo WX220 XPOL |
2.13 |
11.23 |
202.0 |
1.08:1 |
2.94 |
2.94 |
17.44 |
8.4 |
300.8 |
-5.19 |
|
Gulf Alpha 9 |
2.13 |
11.62 |
203.3 |
1.15:1 |
3.26 |
2.97 |
17.64 |
4.6 |
266.2 |
-4.46 |
|
Gulf Alpha 9 XPOL |
2.13 |
11.60 |
203.9 |
1.15:1 |
3.12 |
3.12 |
17.62 |
5.0 |
267.6 |
-4.50 |
|
DJ9BV 2.1 |
2.13 |
11.89 |
44.9 |
1.30:1 |
3.33 |
3.04 |
17.87 |
5.8 |
255.2 |
-4.05 |
|
G0KSC 9LFA |
2.14 |
11.97 |
50.5 |
1.08:1 |
3.26 |
2.94 |
17.88 |
5.2 |
235.1 |
-3.68 |
|
OZ5HF 9 |
2.16 |
11.52 |
38.0 |
1.15:1 |
3.21 |
2.92 |
17.47 |
3.0 |
272.6 |
-4.74 |
|
YU7EF 9 |
2.16 |
11.84 |
49.8 |
1.17:1 |
3.20 |
2.89 |
17.74 |
5.3 |
236.6 |
-3.84 |
|
Z(ohms) - measured on 144.100 MHz Bandwidth – VSWR measured on 145.000 MHz Data taken from VE7BQH G/T table |
||||||||||
DIAGRAMS (no loss included)
SWR DIAGRAMS (loss included for Al)
STACKING
|
Horizontal distance (cm) |
G (dBi) |
TA (K) |
G/T (dB) |
Vertical distance (cm) |
G (dBi) |
TA (K) |
G/T (dB) |
|
100 |
|
|
|
100 |
15.39 |
235.0 |
-8.31 |
|
110 |
15.09 |
259.1 |
-9.04 |
110 |
15.57 |
226.9 |
-7.98 |
|
120 |
15.39 |
252.1 |
-8.62 |
120 |
15.71 |
223.9 |
-7.78 |
|
130 |
15.59 |
246.6 |
-8.32 |
130 |
15.81 |
225.0 |
-7.70 |
|
140 |
15.74 |
242.8 |
-8.10 |
140 |
15.89 |
228.2 |
-7.68 |
|
150 |
15.87 |
240.2 |
-7.93 |
150 |
15.97 |
230.0 |
-7.63 |
|
160 |
15.98 |
238.8 |
-7.79 |
160 |
16.07 |
229.6 |
-7.53 |
|
170 |
16.08 |
238.1 |
-7.68 |
170 |
16.16 |
229.5 |
-7.44 |
|
180 |
16.17 |
238.0 |
-7.58 |
180 |
16.25 |
231.3 |
-7.38 |
|
190 |
16.25 |
238.1 |
-7.51 |
190 |
16.32 |
234.6 |
-7.37 |
|
200 |
16.33 |
238.5 |
-7.43 |
200 |
16.38 |
238.1 |
-7.38 |
|
210 |
16.41 |
239.0 |
-7.36 |
210 |
16.45 |
240.7 |
-7.36 |
|
220 |
16.49 |
239.4 |
-7.29 |
220 |
16.53 |
241.9 |
-7.30 |
|
230 |
16.57 |
239.7 |
-7.22 |
230 |
16.62 |
241.6 |
-7.20 |
|
240 |
16.65 |
239.9 |
-7.14 |
240 |
16.71 |
240.4 |
-7.09 |
|
250 |
16.74 |
239.9 |
-7.05 |
250 |
16.81 |
238.8 |
-6.96 |
|
260 |
16.82 |
239.9 |
-6.97 |
260 |
16.90 |
237.3 |
-6.84 |
|
270 |
16.90 |
239.7 |
-6.89 |
270 |
17.00 |
236.1 |
-6.72 |
|
280 |
16.97 |
239.5 |
-6.81 |
280 |
17.08 |
235.4 |
-6.63 |
|
290 |
17.04 |
239.3 |
-6.74 |
290 |
17.16 |
235.3 |
-6.55 |
|
300 |
17.11 |
239.0 |
-6.66 |
300 |
17.22 |
235.6 |
-6.49 |
|
310 |
17.16 |
238.7 |
-6.61 |
310 |
17.28 |
236.3 |
-6.44 |
|
320 |
17.21 |
238.5 |
-6.56 |
320 |
17.33 |
237.3 |
-6.41 |
|
330 |
17.26 |
238.4 |
-6.50 |
330 |
17.36 |
238.6 |
-6.41 |
|
340 |
17.29 |
238.3 |
-6.47 |
340 |
17.39 |
240.1 |
-6.40 |
|
350 |
17.32 |
238.3 |
-6.44 |
350 |
17.41 |
241.8 |
-6.41 |
|
360 |
17.34 |
238.3 |
-6.42 |
360 |
17.42 |
243.4 |
-6.43 |
|
370 |
17.36 |
238.5 |
-6.40 |
|
|
|
|
|
380 |
17.37 |
238.7 |
-6.40 |
|
|
|
|
|
390 |
17.38 |
238.9 |
-6.39 |
|
|
|
|
|
400 |
17.39 |
239.2 |
-6.39 |
|
|
|
|
|
410 |
17.39 |
239.5 |
-6.39 |
|
|
|
|
|
420 |
17.39 |
239.9 |
-6.40 |
|
|
|
|
*The Table is presented without KF2YN convergence correction applied and serves only to show which distance can be used with good
result. and which distances should be avoided. In H-stack it can be slightly changed.
BEST DISTANCES FOR 4 ANTENNAS IN H-STACK
|
Horizontal distance (cm) |
Vertical distance (cm) |
G (dBi) |
TA (K) |
G/T (dB) |
Remark |
|
3244 |
3041 |
20.12 |
238.5 |
-3.65 |
Per DL6WU formula |
|
3660 |
3120 |
20.29 |
239.9 |
-3.51 |
For max G/T |
|
3080 |
1740 |
19.78 |
234.0 |
-3.91 |
For lowest temperature |
XPOL VERSION
Horizontal components: Same as above
Vertical components: Same as above, except:
PERFORMANCES:
|
Polarization |
G (dBi) |
F/B (dB) |
F/Sh (dBi) |
F/Sv (dBi) |
Hor (◦) |
Ver (◦) |
Temp (◦K) |
G/T (dB) |
Tlos (K) |
|
Horizontal |
14.21 |
30.23 |
19.50 |
14.79 |
37.4 |
40.0 |
239.6 |
-9.58 |
3.4 |
|
Vertical |
14.35 |
23.19 |
13.34 |
18.10 |
38.4 |
36.2 |
241.5 |
-9.47 |
3.2 |
Horizontal polarisation patterns
Vertical polarisation patterns
