ANTENNA Y20708XL0
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) |
|
7 |
2645 |
12.34 |
20.64 |
23.48 |
15.98 |
44.0 |
51.8 |
273.7 |
-12.03 |
3.7 |
WORKING CONDITION:
|
Frequency for SWR=1,5 (MHz) |
Z (Ώ) at 144.100 MHz |
SWR at 145.000 MHz |
|
|
Lowest |
Highest |
||
|
139.800 |
146.200 |
199.6 |
1.02:1 |
DIMENSIONS:
|
|
Ref |
De1 |
De2 |
D1 |
D2 |
D3 |
D4 |
D5 |
All elements made of Al tubes Ǿ8 mm All dimensions given in milimetres No boom correction included. |
|
Pos |
0 |
140 |
340 |
426 |
746 |
1298 |
1999 |
2645 |
|
|
Length |
1024 |
1024 |
910 |
952 |
946 |
918 |
894 |
880 |
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) |
|
|
G4CQM 6 |
1.00 |
9.46 |
56.7 |
1.83:1 |
2.60 |
2.17 |
15.44 |
7.9 |
249.7 |
-6.38 |
|
KF2YN Boxkite 6 |
1.04 |
12.47 |
49.9 |
1.20:1 |
3.90 |
3.00 |
18.25 |
4.6 |
263.1 |
-3.80 |
|
Vine 6 OWL |
1.10 |
9.69 |
48.3 |
1.18:1 |
2.64 |
2.21 |
15.67 |
8.2 |
238.4 |
-5.95 |
|
G0KSC 6 LFA |
1.13 |
9.69 |
49.5 |
1.03:1 |
2.60 |
2.19 |
15.64 |
4.0 |
236.9 |
-5.96 |
|
DD0VF 6 |
1.16 |
9.73 |
27.2 |
1.07:1 |
2.63 |
2.22 |
15.71 |
5.5 |
240.1 |
-5.94 |
|
*DD0VF 6 |
1.16 |
9.73 |
27.2 |
1.07:1 |
2.30 |
2.30 |
15.58 |
5.5 |
245.1 |
-6.16 |
|
Y20708XL0 |
1.27 |
10.19 |
199.6 |
1.02:1 |
3.18 |
2.24 |
16.12 |
3.7 |
244.7 |
-5.61 |
|
M2 2M7 |
1.28 |
9.94 |
204.9 |
1.14:1 |
2.65 |
2.26 |
15.76 |
3.7 |
245.0 |
-5.98 |
|
*M2 2M7 |
1.28 |
9.94 |
204.9 |
1.14:1 |
2.21 |
2.03 |
15.17 |
3.7 |
239.9 |
-6.48 |
|
KF2YN Boxkite 7 |
1.32 |
13.34 |
52.7 |
1.06:1 |
4.17 |
3.40 |
19.30 |
5.2 |
245.5 |
-2.40 |
|
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 |
||||||||||
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 |
13.92 |
236.9 |
-9.81 |
|
110 |
|
|
|
110 |
14.09 |
231.7 |
-9.54 |
|
120 |
|
|
|
120 |
14.25 |
229.1 |
-9.33 |
|
130 |
13.89 |
276.5 |
-10.52 |
130 |
14.38 |
229.2 |
-9.20 |
|
140 |
14.08 |
271.9 |
-10.26 |
140 |
14.50 |
231.1 |
-9.12 |
|
150 |
14.24 |
269.0 |
-10.05 |
150 |
14.60 |
233.2 |
-9.06 |
|
160 |
14.39 |
267.5 |
-9.88 |
160 |
14.70 |
235.1 |
-99-8 |
|
170 |
14.53 |
266.9 |
-9.73 |
170 |
14.79 |
236.6 |
-8.93 |
|
180 |
14.65 |
267.1 |
-9.61 |
180 |
14.89 |
236.9 |
-8.84 |
|
190 |
14.77 |
267.7 |
-9.50 |
190 |
15.00 |
236.3 |
-8.72 |
|
200 |
14.88 |
268.6 |
-9.40 |
200 |
15.11 |
236.1 |
-8.60 |
|
210 |
14.98 |
269.8 |
-9.32 |
210 |
15.22 |
237.2 |
-8.51 |
|
220 |
15.07 |
271.0 |
-9.25 |
220 |
15.31 |
240.2 |
-8.48 |
|
230 |
15.16 |
272.2 |
-9.18 |
230 |
15.38 |
244.9 |
-8.49 |
|
240 |
15.23 |
273.3 |
-9.13 |
240 |
15.44 |
250.9 |
-8.54 |
|
250 |
15.30 |
274.3 |
-9.08 |
250 |
15.49 |
257.8 |
-8.61 |
|
260 |
15.35 |
275.1 |
-9.04 |
260 |
|
|
|
|
270 |
15.40 |
275.8 |
-9.00 |
270 |
|
|
|
|
280 |
15.44 |
276.2 |
-8.97 |
280 |
|
|
|
|
290 |
15.47 |
276.4 |
-8.94 |
290 |
|
|
|
|
300 |
15.49 |
276.5 |
-8.92 |
300 |
|
|
|
|
310 |
15.51 |
276.4 |
-8.90 |
310 |
|
|
|
|
320 |
15.52 |
276.3 |
-8.89 |
320 |
|
|
|
|
330 |
15.53 |
276.0 |
-8.87 |
330 |
|
|
|
|
340 |
15.53 |
275.6 |
-8.87 |
340 |
|
|
|
|
350 |
15.53 |
275.3 |
-8.86 |
350 |
|
|
|
|
360 |
15.53 |
274.9 |
-8.86 |
360 |
|
|
|
*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.
BEST DISTANCES FOR 4 ANTENNAS IN H-STACK
|
Horizontal distance (cm) |
Vertical distance (cm) |
G (dBi) |
TA (K) |
G/T (dB) |
Remark |
|
2777 |
2381 |
18.30 |
252.9 |
-5.73 |
Per DL6WU formula |
|
3180 |
2240 |
18.27 |
244.7 |
-5.61 |
For max G/T |
|
1720 |
1260 |
16.12 |
227.1 |
-7.44 |
For lowest temperature |
STACKING DIAGRAMS FOR MAX G/T
STACKING DIAGRAMS FOR LOWEST TEMPERATURE
