ANTENNA QY20810XL7D3
ANTENNA QY20810XL7D3
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) |
|
8 |
2905 |
12.78 |
24.63 |
21.46 |
16.58 |
43.4 |
48.8 |
257.7 |
-11.33 |
2.3 |
WORKING CONDITION:
|
Frequency for SWR=1,5 (MHz) |
Z (Ώ) at 144.100 MHz |
SWR at 145.000 MHz |
||
|
Lowest |
Highest |
Bandwidth |
||
|
140.000 |
146.500 |
6.500 |
199.0 |
1.08:1 |
DIMENSIONS:
|
|
Ref |
De1 |
De2 |
D1 |
D2 |
D3 |
DQ1 |
DQ2 |
DQ3 |
All elements made of Al tubes Ǿ10 mm The height of rectangles 500 mm All dimensions given in milimetres |
|
Pos |
0 |
160 |
320 |
424 |
737 |
1089 |
1585 |
2296 |
2905 |
|
|
Length |
1016 |
1016 |
864 |
927 |
910 |
882 |
538 |
518 |
498 |
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) |
|
|
G0KSC 7LFA |
1.39 |
10.62 |
48.0 |
1.19:1 |
2.84 |
2.49 |
16.53 |
1.8 |
248.9 |
-5.28 |
|
QY20810XL7D3 |
1.40 |
10.63 |
199.0 |
1.08:1 |
3.36 |
2.38 |
16.52 |
2.3 |
240.2 |
-5.13 |
|
DG7YBN 7 |
1.44 |
10.59 |
47.2 |
1.70:1 |
2.88 |
2.47 |
16.55 |
4.5 |
242.7 |
-5.15 |
|
Vine 7 FD |
1.45 |
10.56 |
47.9 |
1.14:1 |
2.83 |
2.46 |
16.47 |
8.2 |
238.6 |
-5.16 |
|
G4CQM 7 |
1.50 |
10.76 |
50.7 |
2.31:1 |
2.89 |
2.53 |
16.69 |
7.9 |
239.9 |
-4.96 |
|
CT1FFU 7 |
1.54 |
10.82 |
28.0 |
1.02:1 |
2.87 |
2.50 |
16.70 |
2.8 |
237.7 |
-4.96 |
|
DK7ZB 7 |
1.57 |
11.11 |
28.4 |
1.64:1 |
3.16 |
2.84 |
17.13 |
5.8 |
272.6 |
-5.07 |
|
IK0BZY 6 |
1.63 |
11.11 |
19.5 |
2.27:1 |
3.10 |
2.77 |
17.04 |
4.8 |
266.5 |
-5.07 |
|
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 |
14.30 |
230.0 |
-9.30 |
|
110 |
14.04 |
261.6 |
-10.13 |
110 |
14.45 |
225.9 |
-9.08 |
|
120 |
14.25 |
254.7 |
-9.80 |
120 |
14.58 |
224.5 |
-8.92 |
|
130 |
14.41 |
251.0 |
-9.58 |
130 |
14.69 |
225.9 |
-8.83 |
|
140 |
14.55 |
249.2 |
-9.41 |
140 |
14.77 |
229.1 |
-8.82 |
|
150 |
14.68 |
248.6 |
-9.27 |
150 |
14.85 |
232.0 |
-8.79 |
|
160 |
14.79 |
249.0 |
-9.16 |
160 |
14.94 |
233.8 |
-8.74 |
|
170 |
14.90 |
250.2 |
-9.07 |
170 |
15.02 |
235.3 |
-8.68 |
|
180 |
15.00 |
251.8 |
-9.00 |
180 |
15.10 |
236.7 |
-8.63 |
|
190 |
15.10 |
253.7 |
-8.94 |
190 |
15.19 |
237.5 |
-8.55 |
|
200 |
15.19 |
255.6 |
-8.88 |
200 |
15.28 |
237.4 |
-8.46 |
|
210 |
15.28 |
257.5 |
-8.82 |
210 |
15.39 |
236.9 |
-8.34 |
|
220 |
15.36 |
259.1 |
-8.77 |
220 |
15.49 |
236.7 |
-8.24 |
|
230 |
15.45 |
260.4 |
-8.70 |
230 |
15.59 |
237.4 |
-8.15 |
|
240 |
15.53 |
261.4 |
-8.64 |
240 |
15.68 |
239.3 |
-8.10 |
|
250 |
15.60 |
262.0 |
-8.58 |
250 |
15.76 |
242.3 |
-8.07 |
|
260 |
15.67 |
262.4 |
-8.51 |
260 |
15.83 |
246.2 |
-8.07 |
|
270 |
15.73 |
262.5 |
-8.46 |
270 |
15.88 |
250.6 |
-8.10 |
|
280 |
14.78 |
262.3 |
-8.40 |
280 |
15.92 |
255.3 |
-8.14 |
|
290 |
14.82 |
261.9 |
-8.36 |
290 |
|
|
|
|
300 |
14.86 |
261.4 |
-8.31 |
300 |
|
|
|
|
310 |
14.89 |
260.8 |
-8.27 |
310 |
|
|
|
|
320 |
14.91 |
260.2 |
-8.24 |
320 |
|
|
|
|
330 |
14.93 |
259.5 |
-8.21 |
330 |
|
|
|
|
340 |
14.94 |
258.8 |
-8.18 |
340 |
|
|
|
|
350 |
15.95 |
258.2 |
-8.16 |
350 |
|
|
|
|
360 |
15.95 |
257.6 |
-8.15 |
360 |
|
|
|
|
370 |
15.95 |
257.2 |
-8.15 |
|
|
|
|
|
380 |
15.95 |
256.8 |
-8.14 |
|
|
|
|
*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 |
|
2813 |
2518 |
18.67 |
248.2 |
-5.27 |
Per DL6WU formula |
|
3360 |
2380 |
18.67 |
240.2 |
-5.13 |
For max G/T |
|
3260 |
1240 |
17.61 |
223.5 |
-5.88 |
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 |
12.78 |
24.63 |
21.46 |
16.58 |
43.4 |
48.8 |
257.7 |
-11.33 |
2.3 |
|
Vertical |
12.69 |
21.61 |
16.16 |
22.84 |
49.5 |
44.0 |
250.0 |
-11.29 |
2.0 |
Horizontal polarisation patterns
Vertical polarisation patterns
