ANTENNA Y21005XL4
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) |
|
10 |
5565 |
14.60 |
22.18 |
24.08 |
18.12 |
36.0 |
39.6 |
227.2 |
-8.97 |
5.8 |
WORKING CONDITION:
|
Frequency for SWR=1,5 (MHz) |
Z (Ώ) at 144.100 MHz |
SWR at 145.000 MHz |
|
|
Lowest |
Highest |
||
|
138.500 |
146.000 |
198.1 |
1.03:1 |
DIMENSIONS:
|
|
Ref |
De1 |
De2 |
D1 |
D2 |
D3 |
D4 |
D5 |
D6 |
D7 |
D8 |
|
Pos |
0 |
285 |
392 |
522 |
914 |
1556 |
2278 |
3075 |
3902 |
4798 |
5565 |
|
Length |
1010 |
1032 |
856 |
958 |
947 |
926 |
909 |
895 |
877 |
859 |
849 |
|
All elements made of Al tubes Ǿ5mm - All dimensions given in milimetres - 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) |
|
|
I0JXX 12 |
2.68 |
12.67 |
26.9 |
1.31:1 |
3.58 |
3.30 |
18.64 |
6.9 |
238.0 |
-2.97 |
|
Y21005XL4 |
2.72 |
12.45 |
198.1 |
1.03:1 |
3.78 |
3.38 |
18.51 |
5.8 |
232.3 |
-3.00 |
|
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 |
-2.40 |
|
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 |
|
Z(ohms) - measured on 144.100 MHz Bandwidth – VSWR measured on 145.000 MHz |
||||||||||
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 |
15.91 |
219.1 |
-7.49 |
|
110 |
|
|
|
110 |
16.03 |
216.2 |
-7.31 |
|
120 |
|
|
|
120 |
16.14 |
215.7 |
-7.19 |
|
130 |
15.95 |
237.8 |
-7.81 |
130 |
16.22 |
218.1 |
-7.16 |
|
140 |
|
|
|
140 |
|
|
|
|
150 |
16.22 |
232.7 |
-7.44 |
150 |
16.35 |
224.1 |
-7.15 |
|
160 |
|
|
|
160 |
|
|
|
|
170 |
16.42 |
229.8 |
-7.19 |
170 |
16.52 |
223.3 |
-6.96 |
|
180 |
|
|
|
180 |
|
|
|
|
190 |
16.60 |
228.2 |
-6.98 |
190 |
16.69 |
223.4 |
-6.79 |
|
200 |
|
|
|
200 |
|
|
|
|
210 |
16.76 |
227.0 |
-6.79 |
210 |
16.86 |
224.1 |
-6.64 |
|
220 |
|
|
|
220 |
|
|
|
|
230 |
16.93 |
226.1 |
-6.61 |
230 |
17.02 |
223.3 |
-6.46 |
|
240 |
|
|
|
240 |
|
|
|
|
250 |
17.09 |
225.4 |
-6.43 |
250 |
17.20 |
221.4 |
-6.24 |
|
260 |
|
|
|
260 |
17.28 |
220.7 |
-6.15 |
|
270 |
17.24 |
225.0 |
-6.28 |
270 |
17.37 |
220.3 |
-6.05 |
|
280 |
17.31 |
224.9 |
-6.20 |
280 |
17.44 |
220.5 |
-5.99 |
|
290 |
17.37 |
224.9 |
-6.14 |
290 |
17.51 |
221.1 |
-5.93 |
|
300 |
17.44 |
224.9 |
-6.07 |
300 |
17.57 |
222.0 |
-5.89 |
|
310 |
17.49 |
225.0 |
-6.02 |
310 |
17.63 |
223.3 |
-5.85 |
|
320 |
17.54 |
225.1 |
-5.98 |
320 |
17.67 |
224.9 |
-5.84 |
|
330 |
17.59 |
225.2 |
-5.93 |
330 |
17.71 |
226.6 |
-5.84 |
|
340 |
17.63 |
225.4 |
-5.89 |
340 |
17.74 |
228.5 |
-5.84 |
|
350 |
17.66 |
225.6 |
-5.87 |
350 |
17.76 |
230.4 |
-5.86 |
|
360 |
17.68 |
225.8 |
-5.85 |
360 |
|
|
|
|
370 |
17.71 |
226.0 |
-5.82 |
|
|
|
|
|
380 |
17.72 |
226.3 |
-5.82 |
|
|
|
|
|
|
17.74 |
226.5 |
-5.80 |
|
|
|
|
|
|
17.75 |
226.8 |
-5.80 |
|
|
|
|
|
|
17.74 |
226.6 |
-5.80 |
|
|
|
|
*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 |
|
3366 |
3071 |
20.46 |
226.8 |
-3.10 |
Per DL6WU formula |
|
3780 |
3380 |
20.66 |
232.3 |
-3.00 |
For max G/T |
|
3680 |
1280 |
19.05 |
217.0 |
-4.32 |
For lowest temperature |
STACKING DIAGRAMS FOR MAX G/T
STACKING DIAGRAMS FOR LOWEST TEMPERATURE
