ANTENNA Q209C2XL8
9 ELE OBLONG ANTENNA MADE OF ALUMINUM TUBES Ø8 MM
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) |
|
9 |
5405 |
14.89 |
22.54 |
20.76 |
16.83 |
35.0 |
37.4 |
228.3 |
-8.69 |
3.8 |
WORKING CONDITION:
|
Frequency for SWR=1.5 (MHz) |
Z (Ώ) at 144.100 MHz |
SWR at 145.000 MHz |
|
|
Lowest |
Highest |
||
|
142.700 |
146.000 |
50.0 |
1.04:1 |
DIMENSIONS:
|
|
Ref |
De1 |
D1 |
D2 |
D3 |
D4 |
D5 |
D6 |
D7 |
All elements made of Al tubes Ǿ8 mm The height of the rectangles is 300 mm All dimensions given in milimetres |
|
Pos |
0 |
285 |
649 |
1288 |
2037 |
2832 |
3682 |
4546 |
5405 |
|
|
Length |
812 |
756 |
724 |
686 |
664 |
651 |
631 |
607 |
589 |
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) |
|
|
G4CQM 9 |
2.52 |
12.63 |
46.4 |
2.02:1 |
3.62 |
3.35 |
18.68 |
7.3 |
244.4 |
-3.05 |
|
G0KSC 10 LFA |
2.53 |
12.61 |
48.5 |
1.05:1 |
3.48 |
3.18 |
18.54 |
2.6 |
229.8 |
-2.92 |
|
K1FO 12 |
2.53 |
12.49 |
31.1 |
1.23:1 |
3.46 |
3.18 |
18.42 |
4.3 |
240.7 |
-3.25 |
|
YU7EF 10 |
2.59 |
12.44 |
50.3 |
1.06:1 |
3.39 |
3.10 |
18.34 |
6.9 |
227.8 |
-3.08 |
|
Gulf Alpha 11 |
2.60 |
12.33 |
204.1 |
1.07:1 |
3.46 |
3.19 |
18.32 |
5.3 |
248.9 |
-3.49 |
|
Gulf Alpha 11 XPOL |
2.60 |
12.31 |
188.1 |
1.07:1 |
3.32 |
3.32 |
18.29 |
5.6 |
249.8 |
-3.53 |
|
G0KSC 10LFA+2 |
2.60 |
12.45 |
47.4 |
1.24:1 |
3.39 |
3.09 |
18.35 |
4.1 |
226.7 |
-3.06 |
|
Q209C2XL8 |
2.60 |
12.74 |
50.0 |
1.04:1 |
3.94 |
3.50 |
18.80 |
3.8 |
232.3 |
-2.71 |
|
I0JXX 12 |
2.68 |
12.67 |
26.9 |
1.31:1 |
3.58 |
3.30 |
18.64 |
6.9 |
238.0 |
-2.97 |
|
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 |
||||||||||
DIAGRAMS (no loss included)
SWR DIAGRAMS (loss included for Al)
BEST DISTANCES FOR 4 ANTENNAS IN H-STACK
|
Horizontal distance (cm) |
Vertical distance (cm) |
G (dBi) |
TA (K) |
Tlos (K) |
G/T (dB) |
Remark |
|
3459 |
3244 |
20.78 |
228.4 |
3.8 |
-3.81 |
Per DL6WU formula |
|
3980 |
3540 |
20.95 |
232.3 |
3.8 |
-2.71 |
For max G/T |
|
3040 |
1460 |
19.04 |
215.3 |
3.8 |
-3.75 |
For lowest temperature |
Patterns for lowest temperature
Patterns for max G/T
