ANTENNA Q209C2XL6

9 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)

9

5405

14.83

23.45

20.94

16.99

35.4

37.8

227.4

-8.74

4.6

 

WORKING CONDITION:

Frequency for SWR=1.5 (MHz)

Z (Ώ)

at 144.100 MHz

SWR at 145.000 MHz

Lowest

Highest

142.800

146.050

50.0

1.07:1

 

DIMENSIONS:

 

Ref

De1

D1

D2

D3

D4

D5

D6

D7

All elements made of Al tubes Ǿ6 mm

The height of the rectangles is 300 mm

All dimensions given in milimetres

Pos

0

292

649

1288

2037

2832

3679

4539

5405

Length

810

756

724

689

664

654

634

609

590

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

Q209C2XL6

2.60

12.68

50.0

1.07:1

3.92

3.50

18.74

4.6

231.8

-2.76

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

3421

3253

20.71

228.2

4.6

-3.87

Per DL6WU formula

3920

3500

20.88

231.8

4.6

-2.77

For max G/T

3040

1460

19.00

214.3

4.6

-4.31

For lowest temperature

 

Patterns for lowest temperature

 

Patterns for max G/T