ANTENNA X21005XL8Q
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 |
1645 |
12.37 |
26.84 |
- |
17.33 |
48.8 |
44.6 |
254.0 |
-11.68 |
4.2 |
WORKING CONDITION:
|
Frequency for SWR=1.5 (MHz) |
Z (Ώ) at 144.100 MHz |
SWR at 145.000 MHz |
||
|
Lowest |
Highest |
Bandwidth |
||
|
140.700 |
146.400 |
5.700 |
200.4 |
1.07:1 |
DIMENSIONS:
|
|
Ref |
De |
D1 |
D2 |
D3 |
D4 |
Dimensions given in milimetres Diameter of elements 5 milimetres No boom correction included.
|
|
Pos |
0 |
248 |
399 |
773 |
1218 |
1645 |
|
|
Length |
1016 |
798 |
926 |
927 |
949 |
911 |
|
|
Height |
0 |
±220 |
±225 |
±375 |
±510 |
±540 |
CONSTRUCTION OF RADIATOR
H = 798
V = 220
Ø = 5 mm
COMPARISON (inserted in a part of VE7BQH table, where it belongs according to its boom length)
|
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) |
|
|
X21005XL3Q |
0.79 |
10.22 |
200.4 |
1.07:1 |
3.60 |
2.90 |
18.43 |
4.2 |
249.5 |
-5.54 |
|
G4CQM 6 |
1.00 |
9.46 |
56.7 |
1.83:1 |
2.60 |
2.17 |
15.44 |
7.9 |
249.7 |
-6.38 |
|
KF2YN boxkite6 |
1.04 |
12.47 |
49.9 |
1.20:1 |
3.90 |
3.00 |
18.25 |
4.6 |
263.1 |
-3.80 |
|
Vine 6 FD |
1.10 |
9.69 |
48.3 |
1.18:1 |
2.64 |
2.21 |
15.67 |
8.2 |
238.4 |
-5.95 |
|
G0KSC 6LFA |
1.13 |
9.69 |
49.3 |
1.04:1 |
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 |
|
M2 2M7 |
1.28 |
9.94 |
204.9 |
1.14:1 |
2.65 |
2.26 |
15.76 |
3.7 |
245.0 |
-5.98 |
|
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 |
|
|
|
|
110 |
13.73 |
235.8 |
-10.02 |
110 |
|
|
|
|
120 |
13.92 |
236.0 |
-9.84 |
120 |
|
|
|
|
130 |
14.09 |
237.0 |
-9.69 |
130 |
|
|
|
|
140 |
14.23 |
238.7 |
-9.58 |
140 |
|
|
|
|
150 |
14.37 |
241.0 |
-9.48 |
150 |
|
|
|
|
160 |
14.49 |
243.8 |
-9.40 |
160 |
|
|
|
|
170 |
14.60 |
246.9 |
-9.35 |
170 |
|
|
|
|
180 |
14.70 |
250.3 |
-9.30 |
180 |
|
|
|
|
190 |
14.79 |
253.5 |
-9.27 |
190 |
|
|
|
|
200 |
14.87 |
256.5 |
-9.24 |
200 |
14.80 |
245.5 |
-9.12 |
|
210 |
14.94 |
259.0 |
-9.21 |
210 |
14.87 |
247.1 |
-9.08 |
|
220 |
15.01 |
260.8 |
-9.17 |
220 |
14.91 |
248.6 |
-9.07 |
|
230 |
15.07 |
262.0 |
-9.13 |
230 |
14.95 |
249.2 |
-9.04 |
|
240 |
15.13 |
262.6 |
-9.08 |
240 |
14.98 |
248.1 |
-8.99 |
|
250 |
15.18 |
262.6 |
-9.03 |
250 |
15.03 |
246.1 |
-8.90 |
|
260 |
15.22 |
262.2 |
-8.98 |
260 |
15.11 |
244.7 |
-8.80 |
|
270 |
15.25 |
261.3 |
-8.94 |
270 |
15.19 |
244.5 |
-8.72 |
|
280 |
15.28 |
26.02 |
-8.89 |
280 |
15.27 |
245.6 |
-8.66 |
|
290 |
15.30 |
258.9 |
-8.85 |
290 |
15.33 |
248.3 |
-8.64 |
|
300 |
15.32 |
257.4 |
-8.80 |
300 |
15.37 |
252.4 |
-8.67 |
|
310 |
15.34 |
255.9 |
-8.76 |
310 |
15.40 |
257.4 |
-8.72 |
|
320 |
15.35 |
254.5 |
-8.72 |
320 |
|
|
|
|
330 |
15.36 |
253.1 |
-8.69 |
330 |
|
|
|
|
340 |
15.36 |
251.9 |
-8.67 |
340 |
|
|
|
|
350 |
15.37 |
250.9 |
-8.65 |
350 |
|
|
|
|
360 |
15.37 |
250.2 |
-8.63 |
360 |
|
|
|
|
|
15.37 |
249.8 |
-8.63 |
|
|
|
|
*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.
*Yellow coloured – good distances
BEST DISTANCES FOR STACK
Four antennas in H-stack
|
Horizontal distance (mm) |
Vertical distance (mm) |
G (dBi) |
TA (K) |
G/T (dB) |
Tlos (K) |
Remark |
|
2518 |
2741 |
18.22 |
254.2 |
-5.83 |
4.2 |
Per DL6WU formula |
|
3600 |
2900 |
18.43 |
249.5 |
-5.54 |
4.2 |
For max G/T |
|
1180 |
2720 |
16.78 |
237.4 |
-6.99 |
4.5 |
For lowest temperature |
Eight antennas in stack (four in horizontal and two in vertical plane)
|
Horizontal distance (mm) |
Vertical distance (mm) |
G (dBi) |
TA (K) |
G/T (dB) |
Tlos (K) |
|
3600 |
2900 |
21.45 |
248.7 |
-2.51 |
4.2 |
Eight antennas in stack (two in horizontal and four in vertical plane)
|
Horizontal distance (mm) |
Vertical distance (mm) |
G (dBi) |
TA (K) |
G/T (dB) |
Tlos (K) |
|
3600 |
2900 |
21.43 |
241.8 |
-2.41 |
4.2 |
Sixteen antennas (four in horizontal and four antennas in vertical plane)
|
Horizontal distance (mm) |
Vertical distance (mm) |
G (dBi) |
TA (K) |
G/T (dB) |
Tlos (K) |
|
3600 |
2900 |
24.45 |
241.1 |
+0.63 |
4.2 |
