ANTENNA QY20806XL4D3
ANTENNA QY20806XL4D3
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 |
2805 |
12.71 |
22.55 |
20.62 |
17.07 |
43.6 |
48.8 |
259.6 |
-11.43 |
3.4 |
WORKING CONDITION:
|
Frequency for SWR=1,5 (MHz) |
Z (Ώ) at 144.100 MHz |
SWR at 145.000 MHz |
||
|
Lowest |
Highest |
Bandwidth |
||
|
140.100 |
146.700 |
6.600 |
200.9 |
1.08:1 |
DIMENSIONS:
|
|
Ref |
De1 |
De2 |
D1 |
D2 |
D3 |
DQ1 |
DQ2 |
DQ3 |
All elements made of Al rods Ǿ6 mm The height of all rectangles is 500 All dimensions given in milimetres |
|
Pos |
0 |
180 |
330 |
423 |
723 |
1106 |
1575 |
2226 |
2805 |
|
|
Length |
1020 |
1020 |
860 |
944 |
932 |
908 |
542 |
526 |
502 |
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) |
|
|
QY20806XL4D3 |
1.35 |
10.56 |
200.9 |
1.08:1 |
3.44 |
2.46 |
16.52 |
3.4 |
242.9 |
-5.19 |
|
G0KSC 7LFA |
1.39 |
10.62 |
48.0 |
1.19:1 |
2.84 |
2.49 |
16.53 |
1.8 |
248.9 |
-5.28 |
|
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 |
14.16 |
231.3 |
-9.47 |
|
110 |
13.86 |
267.3 |
-10.40 |
110 |
14.33 |
226.7 |
-9.21 |
|
120 |
14.10 |
260.4 |
-10.05 |
120 |
14.48 |
224.9 |
-9.02 |
|
130 |
14.29 |
256.0 |
-9.78 |
130 |
14.60 |
226.1 |
-8.93 |
|
140 |
14.46 |
253.3 |
-9.57 |
140 |
14.70 |
229.5 |
-8.89 |
|
150 |
14.60 |
251.9 |
-9.40 |
150 |
14.79 |
232.5 |
-8.86 |
|
160 |
14.73 |
251.6 |
-9.27 |
160 |
14.89 |
234.0 |
-8.79 |
|
170 |
14.83 |
252.1 |
-9.16 |
170 |
14.98 |
235.0 |
-8.72 |
|
180 |
14.96 |
253.2 |
-9.07 |
180 |
15.07 |
235.8 |
-8.64 |
|
190 |
15.06 |
254.7 |
-8.99 |
190 |
15.17 |
235.2 |
-8.55 |
|
200 |
15.16 |
256.4 |
-8.92 |
200 |
15.28 |
235.5 |
-8.43 |
|
210 |
15.26 |
258.0 |
-8.85 |
210 |
15.38 |
234.9 |
-8.31 |
|
220 |
15.34 |
259.6 |
-8.80 |
220 |
15.49 |
235.0 |
-8.21 |
|
230 |
15.43 |
260.9 |
-8.73 |
230 |
15.59 |
236.3 |
-8.13 |
|
240 |
15.51 |
262.0 |
-8.67 |
240 |
15.67 |
238.9 |
-8.10 |
|
250 |
15.58 |
262.9 |
-8.61 |
250 |
15.74 |
242.6 |
-8.10 |
|
260 |
15.64 |
263.4 |
-8.56 |
260 |
15.80 |
247.2 |
-8.12 |
|
270 |
15.70 |
263.7 |
-8.50 |
270 |
15.85 |
252.3 |
-6.16 |
|
280 |
15.74 |
263.7 |
-8.47 |
280 |
|
|
|
|
290 |
15.78 |
263.6 |
-8.42 |
290 |
|
|
|
|
300 |
15.81 |
263.3 |
-8.39 |
300 |
|
|
|
|
310 |
15.84 |
262.8 |
-8.35 |
310 |
|
|
|
|
320 |
15.86 |
262.3 |
-8.32 |
320 |
|
|
|
|
330 |
15.87 |
261.7 |
-8.30 |
330 |
|
|
|
|
340 |
15.88 |
261.1 |
-8.28 |
340 |
|
|
|
|
350 |
15.89 |
260.5 |
-8.26 |
350 |
|
|
|
|
360 |
15.89 |
259.9 |
-8.25 |
360 |
|
|
|
|
370 |
15.89 |
259.4 |
-8.24 |
|
|
|
|
|
380 |
15.89 |
259.0 |
-8.24 |
|
|
|
|
*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 |
|
2801 |
2518 |
18.63 |
248.9 |
-5.33 |
3.4 |
Per DL6WU formula |
|
3440 |
2440 |
18.67 |
243.0 |
-5.19 |
3.4 |
For max G/T |
|
3440 |
1250 |
17.53 |
224.2 |
-5.98 |
3.4 |
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 |
12.71 |
22.55 |
20.62 |
17.07 |
43.6 |
48.8 |
259.6 |
-11.43 |
3.4 |
|
Vertical |
12.63 |
20.61 |
17.15 |
22.47 |
49.8 |
44.2 |
250.9 |
-11.37 |
3.2 |
Horizontal polarisation patterns
Vertical polarisation patterns
