ANTENNA Q207E3XL5
7 ELE OBLONG ANTENNA MADE OF ALUMINUM RODS Ø5 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) |
|
7 |
3465 |
13.51 |
22.78 |
22.50 |
17.05 |
40.6 |
43.9 |
243.6 |
-10.36 |
5.8 |
WORKING CONDITION:
|
Frequency for SWR=1.5 (MHz) |
Z (Ώ) at 144.100 MHz |
SWR at 145.000 MHz |
|
|
Lowest |
Highest |
||
|
142.400 |
146.000 |
50.0 |
1.07:1 |
DIMENSIONS:
|
|
Ref |
De1 |
D1 |
D2 |
D3 |
D4 |
D5 |
All elements made of Al tubes Ǿ5 mm The height of the rectangles is 400 mm All dimensions given in milimetres |
|
Pos |
0 |
315 |
571 |
1142 |
1889 |
2768 |
3465 |
|
|
Length |
718 |
673 |
649 |
616 |
587 |
578 |
572 |
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 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 |
|
Q207E3XL5 |
1.66 |
11.36 |
50.0 |
1.07:1 |
3.26 |
2.84 |
17.31 |
5.8 |
245.6 |
-4.44 |
|
G4CQM 10 UZ2 |
1.67 |
10.74 |
45.1 |
1.26:1 |
2.89 |
2.51 |
16.68 |
5.7 |
235.9 |
-4.90 |
|
DG7YBN 8 |
1.68 |
10.94 |
47.5 |
1.16:1 |
2.91 |
2.56 |
16.84 |
3.5 |
238.8 |
-4.79 |
|
I4GBZ 7 |
1.69 |
11.41 |
48.4 |
2.27:1 |
3.18 |
2.86 |
17.26 |
5.7 |
278.9 |
-5.04 |
|
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 |
|
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 |
|
2998 |
2783 |
19.37 |
243.2 |
5.8 |
-4.49 |
Per DL6WU formula |
|
3260 |
2840 |
19.46 |
245.6 |
5.8 |
-4.44 |
For max G/T |
|
1970 |
1480 |
17.32 |
223.7 |
5.8 |
-6.18 |
For lowest temperature |
Patterns for lowest temperature
Patterns for max G/T
