ANTENNA Y20710XL3
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 |
12.38 |
19.33 |
23.70 |
15.58 |
43.8 |
51.4 |
273.6 |
-11.99 |
3.1 |
WORKING CONDITION:
|
Frequency for SWR=1,5 (MHz) |
Z (Ώ) at 144.100 MHz |
SWR at 145.000 MHz |
|
|
Lowest |
Highest |
||
|
139.000 |
146.200 |
199.2 |
1.05:1 |
DIMENSIONS:
|
|
Ref |
De1 |
De2 |
D1 |
D2 |
D3 |
D4 |
D5 |
All elements made of Al tubes Ǿ10 mm All dimensions given in milimetres No boom correction included. |
|
Pos |
0 |
140 |
340 |
422 |
736 |
1288 |
1992 |
2645 |
|
|
Length |
1018 |
1024 |
972 |
947 |
941 |
909 |
889 |
873 |
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 |
10.23 |
199.2 |
1.05:1 |
3.46 |
2.22 |
16.13 |
3.1 |
244.3 |
-5.60 |
|
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 |
13.93 |
236.6 |
-9.80 |
|
110 |
|
|
|
110 |
14.10 |
231.1 |
-9.52 |
|
120 |
|
|
|
120 |
14.26 |
228.5 |
-9.31 |
|
130 |
13.89 |
278.4 |
-10.55 |
130 |
14.39 |
228.9 |
-9.19 |
|
140 |
14.08 |
273.3 |
-10.28 |
140 |
14.50 |
231.3 |
-9.13 |
|
150 |
14.24 |
270.1 |
-10.07 |
150 |
14.60 |
234.0 |
-9.08 |
|
160 |
14.39 |
268.3 |
-9.89 |
160 |
14.69 |
236.6 |
-9.03 |
|
170 |
14.53 |
267.5 |
-9.74 |
170 |
14.78 |
238.5 |
-8.98 |
|
180 |
14.65 |
267.4 |
-9.62 |
180 |
14.88 |
238.8 |
-8.89 |
|
190 |
14.77 |
267.9 |
-9.50 |
190 |
14.99 |
238.0 |
-8.76 |
|
200 |
14.88 |
268.7 |
-9.41 |
200 |
15.10 |
237.4 |
-8.64 |
|
210 |
14.98 |
269.7 |
-9.32 |
210 |
15.21 |
238.1 |
-8.54 |
|
220 |
15.08 |
270.9 |
-9.24 |
220 |
15.30 |
240.8 |
-8.50 |
|
230 |
15.16 |
272.0 |
-9.18 |
230 |
15.38 |
245.2 |
-8.50 |
|
240 |
15.24 |
273.1 |
-9.12 |
240 |
15.44 |
251.0 |
-8.55 |
|
250 |
15.30 |
274.1 |
-9.07 |
250 |
|
|
|
|
260 |
15.36 |
274.9 |
-9.03 |
260 |
|
|
|
|
270 |
15.40 |
275.6 |
-9.00 |
270 |
|
|
|
|
280 |
15.44 |
276.0 |
-8.97 |
280 |
|
|
|
|
290 |
15.47 |
276.3 |
-8.94 |
290 |
|
|
|
|
300 |
15.50 |
276.4 |
-8.91 |
300 |
|
|
|
|
310 |
15.51 |
276.4 |
-8.90 |
310 |
|
|
|
|
320 |
15.53 |
276.3 |
-8.88 |
320 |
|
|
|
|
330 |
15.54 |
276.0 |
-8.87 |
330 |
|
|
|
|
340 |
15.54 |
275.7 |
-8.86 |
340 |
|
|
|
|
350 |
15.54 |
275.4 |
-8.86 |
350 |
|
|
|
|
360 |
15.54 |
275.0 |
-8.85 |
360 |
|
|
|
|
370 |
|
|
|
|
|
|
|
|
380 |
|
|
|
|
|
|
|
*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 |
|
2789 |
2399 |
18.34 |
254.3 |
-5.72 |
Per DL6WU formula |
|
3460 |
2220 |
18.28 |
224.3 |
-5.60 |
For max G/T |
|
3460 |
1320 |
17.39 |
228.8 |
-6.21 |
For lowest temperature |
STACKING DIAGRAMS FOR MAX G/T
STACKING DIAGRAMS FOR LOWEST TEMPERATURE
