ANTENNA X21605XL2Q
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) |
|
16 |
3605 |
14.88 |
26.62 |
- |
16.88 |
38.2 |
30.7 |
228.5 |
-8.70 |
6.0 |
WORKING CONDITION:
|
Frequency for SWR=1.5 (MHz) |
Z (Ώ) at 144.100 MHz |
SWR at 145.000 MHz |
||
|
Lowest |
Highest |
Bandwidth |
||
|
141.600 |
147.200 |
5.600 |
|
|
DIMENSIONS:
|
|
Ref |
De |
D1 |
D2 |
D3 |
D4 |
D5 |
D6 |
D7 |
Dimensions given in milimetres Diameter of elements 5 milimetres No boom correction included.
|
|
Pos |
0 |
240 |
398 |
768 |
1204 |
1684 |
2336 |
3032 |
3605 |
|
|
Length |
1014 |
782 |
930 |
931 |
941 |
929 |
917 |
913 |
903 |
|
|
Height |
0 |
±230 |
±230 |
±390 |
±520 |
±605 |
±685 |
±695 |
±685 |
CONSTRUCTION OF RADIATOR
H = 782
V = 230
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) |
|
|
X21605XL2Q |
1.73 |
12.73 |
199.9 |
1.05:1 |
3.80 |
3.90 |
18.79 |
6.0 |
225.6 |
-2.59 |
|
G0KSC 8LFA |
1.79 |
11.06 |
50.0 |
1.24:1 |
3.15 |
2.40 |
16.95 |
3.6 |
222.2 |
-4.37 |
|
W1JR 8 MOD |
1.80 |
11.14 |
50.0 |
1.14:1 |
3.07 |
2.75 |
16.99 |
5.3 |
256.7 |
-4.95 |
|
DJ9BV 1.8 |
1.80 |
11.34 |
77.5 |
1.34:1 |
3.16 |
2.80 |
17.28 |
5.5 |
261.2 |
-4.74 |
|
K1FO 10 |
1.84 |
11.34 |
29.4 |
1.44:1 |
3.10 |
2.78 |
17.27 |
4.3 |
257.7 |
-4.69 |
|
Vine 8 FD |
1.85 |
11.18 |
51.4 |
1.12:1 |
3.00 |
2.63 |
17.06 |
8.5 |
232.3 |
-4.45 |
|
YU7EF 8 |
1.87 |
11.31 |
48.5 |
1.21:1 |
3.04 |
2.71 |
17.23 |
3.8 |
242.1 |
-4.46 |
|
BQH8B |
1.88 |
11.60 |
50.0 |
1.29:1 |
3.28 |
2.97 |
17.62 |
7.2 |
259.3 |
-4.37 |
|
UR5EAZ 9 |
1.89 |
11.32 |
49.2 |
1.01:1 |
3.07 |
2.75 |
17.26 |
3.6 |
249.7 |
-4.56 |
|
G4CQM 8 |
1.91 |
11.52 |
49.5 |
1.11:1 |
3.15 |
2.83 |
17.45 |
5.1 |
248.5 |
-4.35 |
|
KF2YN Boxkite9 |
1.92 |
13.98 |
49.2 |
1.28:2 |
4.45 |
3.70 |
19.95 |
5.6 |
228.6 |
-1.48 |
|
CT1FFU 8 |
1.94 |
11.28 |
27.1 |
1.05:1 |
2.96 |
2.62 |
17.10 |
2.9 |
232.3 |
-4.41 |
|
G0KSC 8OWL |
1.95 |
11.63 |
48.9 |
1.26:1 |
3.13 |
2.82 |
17.55 |
4.6 |
235.7 |
-4.02 |
|
Z(ohms) - measured on 144.100 MHz Bandwidth – VSWR measured on 145.000 MHz |
||||||||||
DIAGRAMS (no loss included)
SWR DIAGRAM (loss included for Al)
SWR DIAGRAM 144 - 146 MHZ
STACKING TABLE
|
Horizontal distance (cm) |
G (dBi) |
TA (K) |
G/T (dB) |
Vertical distance (cm) |
G (dBi) |
TA (K) |
G/T (dB) |
|
100 |
|
|
|
100 |
|
|
|
|
110 |
|
|
|
110 |
|
|
|
|
120 |
|
|
|
120 |
|
|
|
|
130 |
16.06 |
223.9 |
-7.48 |
130 |
|
|
|
|
140 |
16.25 |
223.1 |
-7.28 |
140 |
|
|
|
|
150 |
16.40 |
223.2 |
-7.13 |
150 |
|
|
|
|
160 |
|
|
|
160 |
|
|
|
|
170 |
|
|
|
170 |
|
|
|
|
180 |
|
|
|
180 |
|
|
|
|
190 |
|
|
|
190 |
|
|
|
|
200 |
16.95 |
229.2 |
-6.69 |
200 |
16.00 |
267.7 |
-8.29 |
|
210 |
|
|
|
210 |
|
|
|
|
220 |
|
|
|
220 |
|
|
|
|
230 |
|
|
|
230 |
|
|
|
|
240 |
|
|
|
240 |
|
|
|
|
250 |
17.35 |
232.7 |
-6.35 |
250 |
16.94 |
233.6 |
-6.78 |
|
260 |
|
|
|
260 |
17.02 |
230.2 |
-6.62 |
|
270 |
|
|
|
270 |
17.14 |
227.9 |
-6.48 |
|
280 |
|
|
|
280 |
17.23 |
227.7 |
-6.38 |
|
290 |
|
|
|
290 |
17.29 |
229.4 |
-6.35 |
|
300 |
17.66 |
229.5 |
-5.99 |
300 |
|
|
|
|
310 |
|
|
|
310 |
|
|
|
|
320 |
17.75 |
227.7 |
-5.86 |
320 |
|
|
|
|
330 |
17.79 |
226.9 |
-5.81 |
330 |
|
|
|
|
340 |
17.81 |
226.2 |
-5.77 |
340 |
17.57 |
232.7 |
-6.13 |
|
350 |
17.84 |
225.6 |
-5.73 |
350 |
17.64 |
228.2 |
-6.02 |
|
360 |
17.86 |
225.3 |
-5.71 |
360 |
17.76 |
226.7 |
-5.83 |
|
370 |
17.87 |
225.1 |
-5.70 |
370 |
17.80 |
226.0 |
-5.78 |
|
380 |
17.88 |
225.2 |
-5.69 |
380 |
17.83 |
226.0 |
-5.75 |
|
390 |
17.88 |
225.4 |
-5.69 |
390 |
17.86 |
226.6 |
-5.73 |
|
400 |
17.89 |
225.9 |
-5.69 |
400 |
17.87 |
227.6 |
-5.74 |
*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 |
|
3179 |
3930 |
20.82 |
229.3 |
-2.78 |
6.0 |
Per DL6WU formula |
|
3800 |
3900 |
20.94 |
225.6 |
-2.59 |
6.0 |
For max G/T |
|
1480 |
3800 |
19.35 |
222.1 |
-4.11 |
6.0 |
For lowest temperature |
Four antennas in H-stack, H=3.80+3.80+3.80 V=3.90+3.90+3.9 metres
Four antennas in H-stack, H=1.48+1.48+1.48 V=3.80+3.80+3.8 metres
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) |
|
3800 |
3900 |
23.83 |
225.7 |
+0.35 |
6.0 |
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) |
|
3800 |
3900 |
26.98 |
226.2 |
+3.44 |
6.0 |
SIXTEEN ANTENNAS AT H=3.80+3.80+3.80 AND V=3.90+3.90+3.90 METRES - DIAGRAMS
