ANTENNA QY21308XL7D8
ANTENNA QY21308XL7D8
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) |
|
13 |
7375 |
15.66 |
29.34 |
25.97 |
18.22 |
33.0 |
34.0 |
218.9 |
-7.75 |
3.7 |
WORKING CONDITION:
|
Frequency for SWR=1,5 (MHz) |
Z (Ώ) at 144.100 MHz |
SWR at 145.000 MHz |
||
|
Lowest |
Highest |
Bandwidth |
||
|
140.300 |
146.200 |
5.900 |
199.9 |
1.07:1 |
DIMENSIONS:
|
|
Ref |
De1 |
De2 |
D1 |
D2 |
D3 |
DQ1 |
All elements made of Al rods Ǿ8mm The height of all rectangles is 500 All dimensions given in milimetres |
|
Pos |
0 |
140 |
335 |
425 |
696 |
1118 |
1642 |
|
|
Length |
1016 |
1016 |
860 |
941 |
937 |
912 |
551 |
|
|
|
DQ2 |
DQ3 |
DQ4 |
DQ5 |
DQ6 |
DQ7 |
|
|
|
Pos |
2294 |
3109 |
3928 |
4846 |
5688 |
6626 |
7375 |
|
|
Length |
529 |
509 |
493 |
479 |
469 |
457 |
450 |
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) |
|
|
QY23108XL7D8 |
3.54 |
13.51 |
199.9 |
1.07:1 |
4.08 |
3.82 |
19.51 |
3.7 |
219.2 |
-1.75 |
|
17LQD EKM#1 |
3.59 |
13.30 |
50.0 |
1.23:1 |
3.75 |
3.52 |
19.21 |
4.2 |
242.1 |
-2.48 |
|
17LQD EKM#2 |
3.59 |
13.39 |
50.0 |
1.25:1 |
3.75 |
3.50 |
19.32 |
4.5 |
227.5 |
-2.1 |
|
DL6WU 14 |
3.61 |
13.63 |
51.4 |
1.28:1 |
3.94 |
3.70 |
19.53 |
2.6 |
246.9 |
-2.24 |
|
DJ9BV 3.6 |
3.61 |
13.67 |
53.5 |
1.30:1 |
4.00 |
3.78 |
19.57 |
5.4 |
249.7 |
-2.25 |
|
K1FO 15 |
3.64 |
13.76 |
39.1 |
1.30:1 |
3.94 |
3.71 |
19.67 |
4.8 |
233.0 |
-1.85 |
|
DK7ZB 12 |
3.83 |
14.17 |
26.8 |
1.46:1 |
4.21 |
4.00 |
20.11 |
6.9 |
237.4 |
-1.49 |
|
UA9TC 13RS |
3.83 |
13.95 |
49.7 |
1.07:1 |
3.94 |
3.70 |
19.84 |
5.2 |
215.6 |
-1.35 |
|
G0KSC 13 LFA |
3.84 |
14.10 |
48.5 |
1.14:1 |
4.07 |
3.85 |
20.02 |
4.4 |
221.1 |
-1.28 |
|
InnoV 13 LFA |
3.86 |
13.98 |
48.7 |
1.20:1 |
4.02 |
3.77 |
19.89 |
7.0 |
219.5 |
-1.37 |
|
YU7EF 13 |
3.92 |
14.12 |
47.9 |
2.55:1 |
4.05 |
3.82 |
20.00 |
6.0 |
220.1 |
-1.28 |
|
IK0BZY 12 |
3.95 |
14.06 |
99.2 |
1.44:1 |
4.02 |
3.78 |
19.93 |
6.9 |
222.5 |
-1.39 |
|
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 (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 |
16.75 |
220.3 |
-6.66 |
|
110 |
16.64 |
234.6 |
-7.04 |
110 |
16.93 |
216.1 |
-6.39 |
|
120 |
16.88 |
228.3 |
-6.68 |
120 |
17.07 |
214.7 |
-6.22 |
|
130 |
17.04 |
225.1 |
-6.46 |
130 |
17.17 |
215.9 |
-6.15 |
|
140 |
17.16 |
223.2 |
-6.30 |
140 |
17.25 |
218.5 |
-6.12 |
|
150 |
17.26 |
222.1 |
-6.18 |
150 |
17.32 |
219.9 |
-6.08 |
|
160 |
17.34 |
221.5 |
-6.09 |
160 |
17.41 |
219.3 |
-5.98 |
|
170 |
17.42 |
221.3 |
-6.01 |
170 |
17.49 |
218.6 |
-5.88 |
|
180 |
17.49 |
221.4 |
-5.94 |
180 |
17.56 |
218.6 |
-5.81 |
|
190 |
17.56 |
221.6 |
-5.87 |
190 |
17.63 |
219.2 |
-5.75 |
|
200 |
17.63 |
221.7 |
-5.80 |
200 |
17.70 |
219.9 |
-5.70 |
|
210 |
17.70 |
221.8 |
-5.74 |
210 |
17.76 |
220.6 |
-5.65 |
|
220 |
17.77 |
221.7 |
-5.66 |
220 |
17.82 |
221.3 |
-5.60 |
|
230 |
17.84 |
221.5 |
-5.59 |
230 |
17.88 |
221.8 |
-5.56 |
|
240 |
17.91 |
221.2 |
-5.51 |
240 |
17.94 |
222.2 |
-5.50 |
|
250 |
17.98 |
220.7 |
-5.43 |
250 |
18.00 |
222.3 |
-5.45 |
|
260 |
18.05 |
220.1 |
-5.35 |
260 |
18.07 |
222.1 |
-5.37 |
|
270 |
18.13 |
219.5 |
-5.26 |
270 |
18.13 |
221.5 |
-5.30 |
|
280 |
18.20 |
218.8 |
-5.17 |
280 |
18.20 |
220.6 |
-5.21 |
|
290 |
18.27 |
218.1 |
-5.09 |
290 |
18.27 |
219.6 |
-5.12 |
|
300 |
18.34 |
217.5 |
-5.01 |
300 |
18.34 |
218.6 |
-5.03 |
|
310 |
18.40 |
216.9 |
-4.93 |
310 |
18.41 |
217.7 |
-4.94 |
|
320 |
18.46 |
216.4 |
-4.86 |
320 |
18.47 |
217.0 |
-4.87 |
|
330 |
18.52 |
216.0 |
-4.80 |
330 |
18.53 |
216.6 |
-4.80 |
|
340 |
18.57 |
215.7 |
-4.74 |
340 |
18.59 |
216.5 |
-4.74 |
|
350 |
18.62 |
215.6 |
-4.69 |
350 |
18.63 |
216.8 |
-4.70 |
|
360 |
18.66 |
215.6 |
-4.65 |
360 |
18.67 |
217.2 |
-4.67 |
|
370 |
18.70 |
215.7 |
-4.61 |
370 |
18.71 |
217.7 |
-4.64 |
|
380 |
18.73 |
215.9 |
-4.58 |
380 |
18.74 |
218.0 |
-4.62 |
|
390 |
18.75 |
216.1 |
-4.57 |
390 |
18.77 |
218.2 |
-4.59 |
|
400 |
18.77 |
216.5 |
-4.56 |
400 |
18.79 |
218.4 |
-4.58 |
|
410 |
18.79 |
216.9 |
-4.54 |
410 |
18.81 |
218.5 |
-4.56 |
|
420 |
18.80 |
217.3 |
-4.54 |
420 |
18.83 |
218.5 |
-4.54 |
|
430 |
18.81 |
217.6 |
-4.54 |
430 |
18.84 |
218.5 |
-4.53 |
|
440 |
18.81 |
217.6 |
-4.54 |
440 |
18.85 |
218.4 |
-4.52 |
|
450 |
18.81 |
217.7 |
-4.54 |
450 |
18.85 |
218.2 |
-4.51 |
|
|
|
|
|
460 |
18.86 |
217.9 |
-4.50 |
|
|
|
|
|
470 |
18.86 |
217.5 |
-4.49 |
|
|
|
|
|
480 |
18.87 |
217.1 |
-4.47 |
|
|
|
|
|
490 |
18.87 |
216.7 |
-4.46 |
|
|
|
|
|
500 |
18.87 |
216.4 |
-4.46 |
|
|
|
|
|
510 |
18.87 |
216.2 |
-4.45 |
*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) |
Tloss (K) |
Remark |
|
3663 |
3558 |
21.47 |
216.9 |
-1.90 |
3.7 |
Per DL6WU formula |
|
4090 |
3820 |
21.66 |
219.1 |
-1.75 |
3.7 |
For max G/T |
|
3760 |
2520 |
21.49 |
216.8 |
-1.87 |
3.7 |
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 |
15.66 |
29.34 |
25.97 |
18.22 |
33.0 |
34.0 |
218.9 |
-7.75 |
3.7 |
|
Vertical |
15.75 |
25.08 |
14.76 |
21.07 |
33.0 |
32.2 |
225.8 |
-7.79 |
3.7 |
Horizontal polarisation patterns
Vertical polarisation patterns
