ANTENNA QY20906XL7D4
ANTENNA QY20906XL7D4
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 |
3705 |
13.54 |
21.26 |
24.49 |
15.72 |
40.4 |
44.0 |
244.0 |
-10.33 |
3.7 |
WORKING CONDITION:
|
Frequency for SWR=1,5 (MHz) |
Z (Ώ) at 144.100 MHz |
SWR at 145.000 MHz |
||
|
Lowest |
Highest |
Bandwidth |
||
|
140.100 |
147.000 |
6.600 |
198.4 |
1.01:1 |
DIMENSIONS:
|
|
Ref |
De1 |
De2 |
D1 |
D2 |
D3 |
DQ1 |
DQ2 |
DQ3 |
DQ4 |
All elements made of Al rods Ǿ6 mm The height of all rectangles is 500 All dimensions given in milimetres |
|
Pos |
0 |
160 |
330 |
418 |
718 |
1096 |
1575 |
2246 |
3006 |
3705 |
|
|
Length |
1018 |
1018 |
860 |
940 |
931 |
909 |
539 |
524 |
506 |
496 |
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) |
|
|
QY20906XL7D4 |
1.78 |
11.39 |
198.4 |
1.01:1 |
3.46 |
2.76 |
17.46 |
3.7 |
242.5 |
-4.22 |
|
G0KSC 8LFA |
1.79 |
11.06 |
50.0 |
1.24:1 |
3.15 |
2.40 |
16.95 |
3.6 |
222.2 |
-4.37 |
|
W1JR 8 MOD |
1.80 |
11.14 |
50.0 |
1.14:1 |
3.07 |
2.75 |
16.99 |
5.3 |
256.7 |
-4.95 |
|
DJ9BV 1.8 |
1.80 |
11.34 |
77.5 |
1.34:1 |
3.16 |
2.80 |
17.28 |
5.5 |
261.2 |
-4.74 |
|
K1FO 10 |
1.84 |
11.34 |
29.4 |
1.44:1 |
3.10 |
2.78 |
17.27 |
4.3 |
257.7 |
-4.69 |
|
Vine 8 FD |
1.85 |
11.18 |
51.4 |
1.12:1 |
3.00 |
2.63 |
17.06 |
8.5 |
232.3 |
-4.45 |
|
YU7EF 8 |
1.87 |
11.31 |
48.5 |
1.21:1 |
3.04 |
2.71 |
17.23 |
3.8 |
242.1 |
-4.46 |
|
BQH8B |
1.88 |
11.60 |
50.0 |
1.29:1 |
3.28 |
2.97 |
17.62 |
7.2 |
259.3 |
-4.37 |
|
UR5EAZ 9 |
1.89 |
11.32 |
49.2 |
1.01:1 |
3.07 |
2.75 |
17.26 |
3.6 |
249.7 |
-4.56 |
|
G4CQM 8 |
1.91 |
11.52 |
49.5 |
1.11:1 |
3.15 |
2.83 |
17.45 |
5.1 |
248.5 |
-4.35 |
|
KF2YN Boxkite9 |
1.92 |
13.98 |
49.2 |
1.28:2 |
4.45 |
3.70 |
19.95 |
5.6 |
228.6 |
-1.48 |
|
CT1FFU 8 |
1.94 |
11.28 |
27.1 |
1.05:1 |
2.96 |
2.62 |
17.10 |
2.9 |
232.3 |
-4.41 |
|
G0KSC 8OWL |
1.95 |
11.63 |
48.9 |
1.26:1 |
3.13 |
2.82 |
17.55 |
4.6 |
235.7 |
-4.02 |
|
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 |
14.94 |
227.6 |
-8.62 |
|
110 |
14.69 |
256.5 |
-9.39 |
110 |
15.09 |
223.0 |
-8.38 |
|
120 |
14.90 |
251.5 |
-9.10 |
120 |
15.22 |
221.6 |
-8.22 |
|
130 |
15.06 |
247.0 |
-8.86 |
130 |
15.32 |
224.0 |
-8.17 |
|
140 |
15.20 |
244.0 |
-8.66 |
140 |
15.39 |
229.0 |
-8.19 |
|
150 |
15.32 |
242.3 |
-8.51 |
150 |
15.47 |
233.0 |
-8.19 |
|
160 |
15.44 |
241.5 |
-8.38 |
160 |
15.55 |
234.6 |
-8.14 |
|
170 |
15.54 |
241.4 |
-8.28 |
170 |
15.63 |
235.8 |
-8.08 |
|
180 |
15.64 |
241.8 |
-8.18 |
180 |
15.71 |
238.0 |
-8.04 |
|
190 |
15.73 |
242.6 |
-8.11 |
190 |
15.78 |
240.3 |
-8.02 |
|
200 |
15.82 |
243.5 |
-8.03 |
200 |
15.86 |
241.8 |
-7.96 |
|
210 |
15.92 |
244.5 |
-7.96 |
210 |
15.94 |
241.9 |
-7.89 |
|
220 |
16.00 |
245.4 |
-7.89 |
220 |
16.04 |
241.0 |
-7.77 |
|
230 |
16.09 |
246.2 |
-7.81 |
230 |
16.13 |
239.6 |
-7.65 |
|
240 |
16.17 |
246.9 |
-7.75 |
240 |
16.23 |
238.4 |
-7.53 |
|
250 |
16.26 |
247.5 |
-7.66 |
250 |
16.33 |
237.8 |
-7.42 |
|
260 |
16.33 |
247.8 |
-7.60 |
260 |
16.42 |
237.9 |
-7.33 |
|
270 |
16.40 |
248.0 |
-7.53 |
270 |
16.50 |
238.8 |
-7.27 |
|
280 |
16.47 |
248.1 |
-7.47 |
280 |
16.57 |
240.3 |
-7.23 |
|
290 |
16.52 |
248.1 |
-7.42 |
290 |
16.63 |
242.3 |
-7.20 |
|
300 |
16.57 |
247.9 |
-7.36 |
300 |
16.68 |
244.5 |
-7.19 |
|
310 |
16.61 |
247.7 |
-7.32 |
310 |
16.72 |
246.8 |
-7.19 |
|
320 |
16.64 |
247.5 |
-7.29 |
320 |
16.75 |
249.1 |
-7.20 |
|
330 |
16.67 |
247.2 |
-7.25 |
330 |
16.77 |
251.3 |
-7.22 |
|
340 |
16.69 |
246.9 |
-7.22 |
340 |
|
|
|
|
350 |
16.71 |
246.6 |
-7.20 |
350 |
|
|
|
|
360 |
16.72 |
246.4 |
-7.19 |
360 |
|
|
|
|
370 |
16.72 |
246.1 |
-7.18 |
|
|
|
|
|
380 |
16.73 |
246.0 |
-7.17 |
|
|
|
|
|
390 |
16.73 |
245.8 |
-7.16 |
|
|
|
|
|
400 |
16.73 |
245.6 |
-7.16 |
|
|
|
|
*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 |
|
3013 |
2777 |
19.41 |
244.0 |
-4.46 |
3.7 |
Per DL6WU formula |
|
3460 |
2760 |
19.61 |
242.5 |
-4.22 |
3.7 |
For max G/T |
|
3080 |
2380 |
19.12 |
238.3 |
-4.65 |
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 |
13.54 |
21.26 |
24.49 |
15.72 |
40.4 |
44.0 |
244.0 |
-10.33 |
3.7 |
|
Vertical |
13.46 |
19.41 |
14.90 |
22.78 |
44.4 |
40.8 |
240.1 |
-10.34 |
3.4 |
Horizontal polarisation patterns
Vertical polarisation patterns
