ANTENNA Q212D4XL8
12 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) |
|
12 |
7225 |
16.04 |
27.70 |
18.60 |
16.25 |
30.4 |
31.8 |
230.3 |
-7.59 |
4.3 |
WORKING CONDITION:
|
Frequency for SWR=1.5 (MHz) |
Z (Ώ) at 144.100 MHz |
SWR at 145.000 MHz |
|
|
Lowest |
Highest |
||
|
142.500 |
146.000 |
50.0 |
1.03:1 |
DIMENSIONS:
|
|
Ref |
De1 |
D1 |
D2 |
D3 |
D4 |
D5 |
D6 |
D7 |
D8 |
D9 |
D10 |
|
Pos |
0 |
278 |
444 |
852 |
1465 |
2188 |
3002 |
3797 |
4694 |
5582 |
6448 |
7225 |
|
Length |
800 |
747 |
706 |
690 |
674 |
652 |
636 |
630 |
613 |
607 |
601 |
591 |
|
All elements made of Al tubes Ǿ8 mm - The height of the rectangles is 320 mm - All dimensions given in milimetres |
||||||||||||
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) |
|
|
F9FT 17 |
3.14 |
12.87 |
25.8 |
1.32:1 |
3.68 |
3.50 |
18.90 |
5.8 |
236.4 |
-2.69 |
|
CC3219 |
3.17 |
12.77 |
18.3 |
1.49:1 |
4.27 |
3.66 |
18.80 |
5.7 |
307.8 |
-3.93 |
|
CC3219 MOD |
3.17 |
13.25 |
29.0 |
1.06:1 |
3.87 |
3.62 |
19.27 |
5.1 |
245.6 |
-2.48 |
|
BQH 13 |
3.19 |
13.30 |
50.0 |
1.11:1 |
3.85 |
3.60 |
19.28 |
4.3 |
244.9 |
-2.46 |
|
Q212D4XL8 |
3.47 |
13.89 |
50.0 |
1.03:1 |
4.26 |
4.06 |
19.89 |
4.3 |
227.2 |
-1.53 |
|
G0KSC 12LFA |
3.32 |
13.44 |
49.9 |
1.07:1 |
3.78 |
3.52 |
19.36 |
4.0 |
220.5 |
-1.92 |
|
G0KSC 12OWA |
3.33 |
13.33 |
49.3 |
1.05:1 |
3.85 |
3.50 |
19.28 |
5.7 |
224.3 |
-2.08 |
|
G4CQM 11 |
3.36 |
13.55 |
46.2 |
1.94:1 |
3.92 |
3.66 |
19.50 |
8.3 |
232.0 |
-2.01 |
|
DK7ZB 11 |
3.40 |
13.68 |
27.9 |
1.27:1 |
3.94 |
3.71 |
19.61 |
5.0 |
234.3 |
-1.94 |
|
UA9TC 12RS |
3.40 |
13.55 |
51.7 |
1.09:1 |
3.80 |
3.56 |
19.46 |
5.1 |
218.2 |
-1.78 |
|
G0KSC 12LFA |
3.41 |
13.64 |
50.1 |
1.18:1 |
3.90 |
3.70 |
19.58 |
4.3 |
221.2 |
-1.72 |
|
MBI 3.4 |
3.42 |
13.58 |
37.7 |
1.62:1 |
3.87 |
3.62 |
19.49 |
9.2 |
227.7 |
-1.93 |
|
G0KSC 12LFA 2R |
3.43 |
13.46 |
50.3 |
1.06:1 |
3.95 |
3.75 |
19.48 |
4.9 |
220.5 |
-1.80 |
|
InnoV 12 LFA |
3.43 |
13.56 |
49.3 |
1.07:1 |
3.80 |
3.60 |
19.47 |
5.4 |
218.9 |
-1.78 |
|
Gulf Alpha 14 |
3.44 |
13.24 |
198.0 |
1.21:1 |
3.71 |
3.44 |
19.14 |
5.5 |
229.6 |
-2.32 |
|
Gulf Alpha 114 XPOL |
3.44 |
13.25 |
200.5 |
1.21:1 |
3.57 |
3.57 |
19.14 |
5.5 |
231.8 |
-2.37 |
|
YU7EF 12 |
3.49 |
13.67 |
45.4 |
1.77:1 |
3.85 |
3.60 |
19.55 |
6.1 |
221.1 |
-1.75 |
|
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 |
|
3967 |
3797 |
21.98 |
224.4 |
4.3 |
-1.53 |
Per DL6WU formula |
|
4260 |
4060 |
22.04 |
227.2 |
4.3 |
-1.53 |
For max G/T |
|
3680 |
1440 |
20.02 |
214.4 |
4.5 |
-3.28 |
For lowest temperature |
Patterns for lowest temperature
Patterns for max G/T
