ANTENNA Q205G1XL6

5 ELE OBLONG ANTENNA MADE OF ALUMINUM TUBES Ø6 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)

4

1725

11.80

20.90

25.01

14.75

48.4

53.4

285.9

-12.81

4.6

 

WORKING CONDITION:

Frequency for SWR=1.5 (MHz)

Z (Ώ)

at 144.100 MHz

SWR at 145.000 MHz

Lowest

Highest

141.500

146.300

49.8

1.07:1

 

DIMENSIONS:

 

Ref

De1

D1

D2

D3

 

 

All elements made of Al tubes Ǿ6 mm

The height of the rectangles is 470 mm

All dimensions given in milimetres

Pos

0

267

512

1118

1725

 

 

Length

652

607

580

563

549

 

 

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)

Q204G2XL6

0.83

9.60

49.8

1.07:1

2.98

2.22

15.55

4.3

259.1

-6.44

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

 

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

2538

2315

17.69

263.9

4.3

-6.53

Per DL6WU formula

2.980

2220

17.70

259.1

4.3

-6.44

For max G/T

1760

1520

16.02

249.2

4.3

-7.95

For lowest temperature

 

Patterns for lowest temperature

 

Patterns for max G/T