ANTENNA QY21705XL9D10
ANTENNA QY21705XL9D10
PERFORMANCES:
|
No of ele |
L (mm) |
G (dBi) |
F/B (dB) |
F/Sh (dB) |
F/Sv (dB) |
Hor (◦) |
Ver (◦) |
Temp (◦K) |
G/T (dB) |
Tlos (K) |
|
17 |
11485 |
17.35 |
26.84 |
21.23 |
17.92 |
27.4 |
27.8 |
220.5 |
-6.08 |
6.8 |
WORKING CONDITION:
|
Frequency for SWR=1,5 (MHz) |
Z (Ώ) at 144.100 MHz |
SWR at 145.000 MHz |
||
|
Lowest |
Highest |
Bandwidth |
||
|
140.800 |
146.600 |
5.800 |
200.3 |
1.07:1 |
DIMENSIONS:
|
|
Ref |
De1 |
De2 |
D1 |
D2 |
D3 |
DQ1 |
DQ2 |
DQ3 |
All elements made of Al rods Ǿ5 mm The height of all rectangles is 500 mm All dimensions given in milimetres |
|
Pos |
0 |
200 |
325 |
423 |
706 |
1074 |
1578 |
2229 |
3038 |
|
|
Length |
1020 |
1030 |
820 |
953 |
942 |
921 |
558 |
537 |
521 |
|
|
|
DQ4 |
DQ5 |
DQ6 |
DQ7 |
DQ8 |
DQ9 |
DQ10 |
DQ11 |
DQ12 |
|
|
Pos |
3873 |
4779 |
5654 |
6573 |
7504 |
8416 |
9322 |
10246 |
10965 |
|
|
Length |
508 |
502 |
494 |
486 |
478 |
468 |
462 |
454 |
444 |
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) |
|
|
RU1AA 15 |
5.27 |
15.44 |
54.6 |
3.70:1 |
4.78 |
4.78 |
21.38 |
9.2 |
230.9 |
-0.10 |
|
QY21705XL9D10 |
5.52 |
15.20 |
200.3 |
1.07:1 |
5.08 |
5.42 |
21.39 |
6.8 |
214.0 |
+0.14 |
|
M2 18XXX |
5.30 |
15.00 |
199.7 |
1.07:1 |
4.56 |
4.36 |
20.90 |
7.4 |
231.9 |
-0.60 |
|
YU7EF 16 |
5.42 |
15.15 |
43.9 |
2.50:1 |
4.46 |
4.27 |
20.95 |
7.3 |
218.9 |
-0.30 |
|
G0KSC 17 LFA |
5.67 |
15.43 |
48.3 |
1.23:1 |
4.63 |
4.43 |
21.30 |
4.9 |
212.0 |
+0.19 |
|
InnoV 17 LFA |
5.69 |
15.36 |
50.0 |
1.26:1 |
4.59 |
4.39 |
21.22 |
7.2 |
211.8 |
+0.11 |
|
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)
DIAGRAMS (losses included)
STACKING
|
Horizontal distance (cm) |
G (dBi) |
TA (K) |
G/T (dB) |
Vertical distance (cm) |
G (dBi) |
TA (K) |
G/T (dB) |
|
100 |
|
|
|
100 |
17.94 |
217.8 |
-5.42 |
|
110 |
17.40 |
251.7 |
-6.59 |
110 |
18.24 |
214.0 |
-5.04 |
|
120 |
17.98 |
232.0 |
-5.66 |
120 |
18.43 |
212.9 |
-4.82 |
|
130 |
18.30 |
226.7 |
-5.23 |
130 |
18.56 |
214.6 |
-4.73 |
|
140 |
18.51 |
224.8 |
-4.99 |
140 |
18.65 |
218.3 |
-4.72 |
|
150 |
18.66 |
224.2 |
-4.82 |
150 |
18.71 |
221.2 |
-4.71 |
|
160 |
18.77 |
224.0 |
-4.71 |
160 |
18.79 |
221.4 |
-4.64 |
|
170 |
18.86 |
224.2 |
-4.62 |
170 |
18.87 |
220.3 |
-4.53 |
|
180 |
18.94 |
224.6 |
-4.55 |
180 |
18.95 |
219.0 |
-4.43 |
|
190 |
19.01 |
225.0 |
4.49 |
190 |
19.01 |
218.1 |
-4.33 |
|
200 |
19.08 |
225.4 |
-4.43 |
200 |
19.11 |
217.6 |
-4.24 |
|
210 |
19.14 |
225.7 |
-4.37 |
210 |
19.18 |
217.5 |
-4.17 |
|
220 |
19.20 |
226.0 |
-4.32 |
220 |
19.25 |
217.7 |
-4.10 |
|
230 |
19.26 |
226.1 |
-4.26 |
230 |
19.31 |
218.2 |
-4.05 |
|
240 |
19.32 |
226.0 |
-4.20 |
240 |
19.37 |
218.8 |
-4.01 |
|
250 |
19.37 |
225.8 |
-4.14 |
250 |
19.43 |
219.7 |
-3.96 |
|
260 |
19.43 |
225.4 |
-4.08 |
260 |
19.49 |
220.6 |
-3.92 |
|
270 |
19.49 |
224.8 |
-4.01 |
270 |
19.55 |
221.5 |
-3.88 |
|
280 |
19.55 |
224.1 |
-3.93 |
280 |
19.60 |
222.3 |
-3.84 |
|
290 |
19.61 |
223.3 |
-3.85 |
290 |
19.65 |
222.8 |
-3.81 |
|
300 |
19.67 |
222.3 |
-3.78 |
300 |
19.71 |
223.0 |
-3.75 |
|
310 |
19.73 |
221.4 |
-3.70 |
310 |
19.77 |
223.0 |
-3.69 |
|
320 |
19.79 |
220.6 |
-3.62 |
320 |
19.82 |
222.8 |
-3.64 |
|
330 |
19.85 |
219.6 |
-3.54 |
330 |
19.88 |
222.5 |
-3.57 |
|
340 |
19.91 |
218.9 |
-3.47 |
340 |
19.94 |
222.2 |
-3.50 |
|
350 |
19.96 |
218.2 |
-3.40 |
350 |
19.99 |
222.1 |
-3.45 |
|
360 |
20.02 |
217.6 |
-3.33 |
360 |
20.04 |
222.1 |
-3.40 |
|
370 |
20.08 |
217.2 |
-3.26 |
370 |
20.09 |
222.1 |
-3.35 |
|
380 |
20.13 |
216.9 |
-3.21 |
380 |
20.14 |
221.8 |
-3.30 |
|
390 |
20.18 |
216.7 |
-3.15 |
390 |
20.19 |
221.4 |
-3.24 |
|
400 |
20.23 |
216.6 |
-3.10 |
400 |
20.23 |
220.9 |
-3.19 |
|
410 |
20.27 |
216.6 |
-3.06 |
410 |
20.28 |
220.3 |
-3.13 |
|
420 |
20.31 |
216.6 |
-3.02 |
420 |
20.32 |
219.7 |
-3.07 |
|
430 |
20.35 |
216.6 |
-2.98 |
430 |
20.36 |
219.0 |
-3.02 |
|
440 |
20.39 |
216.7 |
-2.94 |
440 |
20.40 |
218.4 |
-2.97 |
|
450 |
20.42 |
216.7 |
-2.91 |
450 |
20.44 |
217.7 |
-2.91 |
|
460 |
20.45 |
216.8 |
-2.88 |
460 |
20.47 |
217.1 |
-2.87 |
|
470 |
20.47 |
216.8 |
-2.86 |
470 |
20.50 |
216.4 |
-2.83 |
|
480 |
20.49 |
216.8 |
-2.84 |
480 |
20.52 |
215.8 |
-2.79 |
|
490 |
20.51 |
216.7 |
-2.82 |
490 |
20.54 |
215.2 |
-2.76 |
|
500 |
20.53 |
216.7 |
-2.80 |
500 |
20.56 |
214.7 |
-2.73 |
|
510 |
20.55 |
216.7 |
-2.78 |
510 |
20.58 |
214.2 |
-2.70 |
|
520 |
20.56 |
216.7 |
-2.77 |
520 |
20.59 |
213.7 |
-2.68 |
|
530 |
20.57 |
216.7 |
-2.76 |
530 |
20.60 |
213.4 |
-2.66 |
|
540 |
20.58 |
216.8 |
-2.75 |
540 |
20.61 |
213.2 |
-2.65 |
|
550 |
20.58 |
216.9 |
-2.76 |
550 |
20.62 |
213.2 |
-2.64 |
|
560 |
20.59 |
217.1 |
-2.75 |
560 |
20.62 |
213.4 |
-2.64 |
|
|
|
|
|
570 |
20.62 |
213.8 |
-2.65 |
*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 (mm) |
Vertical distance (mm) |
G (dBi) |
TA (K) |
G/T (dB) |
Tloss (K) |
Remark |
|
4.489 |
4.361 |
23.16 |
218.7 |
-0.24 |
6.8 |
Per DL6WU formula |
|
5.080 |
5.420 |
23.45 |
214.0 |
+0.14 |
6.8 |
For max G/T |
|
|
|
|
|
|
|
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 |
17.35 |
26.84 |
21.23 |
17.92 |
27.4 |
27.8 |
220.5 |
-6.08 |
6.8 |
|
Vertical |
17.51 |
23.94 |
14.75 |
17.62 |
26.6 |
25.8 |
222.5 |
-5.96 |
6.8 |
Horizontal polarisation patterns
DIAGRAMS (losses included)
Vertical polarisation patterns
