ANTENNA QY21108XL7D6
ANTENNA QY21108XL7D6
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) |
|
11 |
5555 |
14.77 |
23.48 |
25.66 |
17.33 |
36.2 |
37.8 |
225.5 |
-8.77 |
3.4 |
WORKING CONDITION:
|
Frequency for SWR=1,5 (MHz) |
Z (Ώ) at 144.100 MHz |
SWR at 145.000 MHz |
||
|
Lowest |
Highest |
Bandwidth |
||
|
139.900 |
146.200 |
6.300 |
198.8 |
1.06:1 |
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 |
150 |
335 |
425 |
696 |
1093 |
1601 |
|
|
Length |
1024 |
1024 |
832 |
930 |
927 |
909 |
545 |
|
|
|
DQ2 |
DQ3 |
DQ4 |
DQ5 |
DQ6 |
|
|
|
|
Pos |
2268 |
3089 |
3908 |
4816 |
5555 |
|
|
|
|
Length |
513 |
503 |
489 |
477 |
470 |
|
|
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) |
|
|
QY21108XL7D6 |
2.67 |
12.62 |
199.8 |
1.06:1 |
3.82 |
3.26 |
18.61 |
3.4 |
226.7 |
-2.83 |
|
I0JXX 12 |
2.68 |
12.67 |
26.9 |
1.31:1 |
3.58 |
3.30 |
18.64 |
6.9 |
238.0 |
-2.97 |
|
BQH 12J |
2.80 |
12.80 |
50.0 |
1.01:1 |
3.67 |
3.40 |
18.83 |
4.3 |
246.2 |
-2.93 |
|
CT1FFU 10C |
2.82 |
13.04 |
27.2 |
1.23:1 |
3.62 |
3.31 |
18.93 |
4.2 |
222.9 |
-2.4 |
|
M2 12 |
2.84 |
12.68 |
37.0 |
1.13:1 |
3.48 |
3.20 |
18.54 |
5.4 |
232.5 |
-2.97 |
|
KF2YN Boxkite12 |
2.84 |
14.90 |
48.5 |
1.22:1 |
6.00 |
4.40 |
20.84 |
5.9 |
227.4 |
-0.58 |
|
BQH 10 |
2.86 |
13.05 |
22.6 |
1.47:1 |
3.69 |
3.43 |
19.00 |
7.0 |
232.5 |
-2.51 |
|
WB9UWA 12 |
2.87 |
12.73 |
23.9 |
1.47:1 |
3.48 |
3.20 |
18.61 |
7.0 |
223.0 |
-2.72 |
|
DK7ZB 10 |
2.87 |
13.00 |
25.8 |
1.61:1 |
3.87 |
3.60 |
19.17 |
6.8 |
247.5 |
-2.62 |
|
Vine 11 FD |
2.87 |
12.78 |
48.4 |
1.09:1 |
3.60 |
3.21 |
18.67 |
10.0 |
220.0 |
-2.60 |
|
YU7EF 11B |
2.87 |
12.92 |
50.2 |
1.35:1 |
3.58 |
3.30 |
18.85 |
4.7 |
225.6 |
-2.53 |
|
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 |
16.00 |
224.4 |
-7.49 |
|
110 |
15.81 |
245.7 |
-8.08 |
110 |
16.17 |
219.0 |
-7.21 |
|
120 |
16.05 |
236.4 |
-7.67 |
120 |
16.30 |
216.6 |
-7.03 |
|
130 |
16.21 |
231.3 |
-7.41 |
130 |
16.40 |
217.0 |
-6.94 |
|
140 |
16.33 |
228.2 |
-7.23 |
140 |
16.49 |
219.0 |
-6.89 |
|
150 |
16.44 |
226.3 |
-7.09 |
150 |
16.57 |
220.3 |
-6.84 |
|
160 |
16.54 |
225.3 |
-6.97 |
160 |
16.65 |
220.5 |
-6.76 |
|
170 |
16.62 |
224.8 |
-6.88 |
170 |
16.73 |
220.8 |
-6.69 |
|
180 |
16.71 |
224.7 |
-6.78 |
180 |
16.80 |
222.0 |
-6.64 |
|
190 |
16.79 |
224.8 |
-6.71 |
190 |
16.87 |
223.7 |
-6.61 |
|
200 |
16.87 |
225.0 |
-6.63 |
200 |
16.93 |
225.5 |
-6.58 |
|
210 |
16.95 |
225.3 |
-6.56 |
210 |
16.99 |
227.0 |
-6.55 |
|
220 |
17.03 |
225.5 |
-6.48 |
220 |
17.05 |
228.0 |
-6.51 |
|
230 |
17.11 |
225.6 |
-6.40 |
230 |
17.12 |
228.5 |
-6.45 |
|
240 |
17.18 |
225.7 |
-6.33 |
240 |
17.19 |
228.2 |
-6.37 |
|
250 |
17.26 |
225.7 |
-6.25 |
250 |
17.26 |
227.5 |
-6.29 |
|
260 |
17.34 |
225.7 |
-6.17 |
260 |
17.34 |
226.6 |
-6.19 |
|
270 |
17.41 |
225.6 |
-6.10 |
270 |
17.42 |
225.6 |
-6.09 |
|
280 |
17.49 |
225.4 |
-6.02 |
280 |
17.50 |
224.7 |
-5.99 |
|
290 |
17.55 |
225.2 |
-5.95 |
290 |
17.57 |
224.0 |
-5.91 |
|
300 |
17.62 |
225.0 |
-5.88 |
300 |
17.64 |
223.7 |
-5.83 |
|
310 |
17.68 |
224.8 |
-5.82 |
310 |
17.71 |
223.7 |
-5.76 |
|
320 |
17.73 |
224.6 |
-5.76 |
320 |
17.77 |
223.9 |
-5.71 |
|
330 |
17.77 |
224.5 |
-5.72 |
330 |
17.82 |
224.4 |
-5.67 |
|
340 |
17.81 |
224.4 |
-5.68 |
340 |
17.86 |
225.1 |
-5.64 |
|
350 |
17.85 |
224.3 |
-5.64 |
350 |
17.89 |
226.0 |
-5.63 |
|
360 |
17.87 |
224.4 |
-5.62 |
360 |
17.92 |
227.0 |
-5.62 |
|
370 |
17.90 |
224.4 |
-5.59 |
370 |
17.94 |
227.9 |
-5.62 |
|
380 |
17.91 |
224.6 |
-5.58 |
380 |
17.95 |
228.5 |
-5.62 |
|
390 |
17.93 |
224.7 |
-5.57 |
390 |
17.97 |
229.0 |
-5.61 |
|
400 |
17.93 |
224.9 |
-5.57 |
400 |
17.97 |
229.2 |
-5.61 |
*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 |
|
3302 |
3211 |
20.60 |
227.1 |
-2.96 |
3.7 |
Per DL6WU formula |
|
3820 |
2740 |
20.72 |
226.7 |
-2.83 |
3.7 |
For max G/T |
|
3820 |
2740 |
20.72 |
226.7 |
-2.83 |
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 |
14.77 |
23.48 |
25.66 |
17.33 |
36.2 |
37.8 |
225.5 |
-8.77 |
3.4 |
|
Vertical |
14.76 |
19.29 |
14.83 |
23.24 |
37.4 |
36.0 |
230.9 |
-8.87 |
3.5 |
Horizontal polarisation patterns
Vertical polarisation patterns
