ANTENNA X72805XL2Q

 

DESCRIPTION

 

Radiator

Number of  yagi elements

Boomlength (mm)

 

Double rectangle

27 + radiator

2815
       

 

PERFORMANCES (loss included, KF2YN correction applied)

G

(dBi)

F/B

(dB)

F/Sh

(dBi)

F/Sv

(dBi)

Hor lobe

(◦)

Ver lobe

(◦)

Ta

(K)

Tlos

(K)

G/T

(dB)

17.49

34.21

26.10

17.72

28.4

23.4

29.6

4.2

+2.78

 

DIMENSIONS

Element

Ref

De

D1, D2

D3,D4

D5,D6

D7,D8

D9,D10

D11,D12

D13,D14

Position

0

122

178

316

474

578

752

1008

1256

Length

333

270.5

303

299

294

291

291

288

286.5

Height

0

±80

±64

±109

±145

±171

±191

±222

±250

Element

D15,D16

D17,D18

D18,D20

D21,D22

D23,D24

D25,D26 

 

 

 

Position

1517

1779

2044

2314

2578

2815

 

 

 

Length

285.5

283.5

281

277

270.5

265

 

 

 

Height

±265

±273

±271

±269

±265

±250

 

 

 

Remark

All elements made of Al rods Ǿ5 mm

All dimensions given in milimetres

No boom correction included.

 

Ref = Reflector

De =  Dipole (radiator)

D  =   Director

 

CONSTRUCTION OF RADIATOR

Material: Aluminum rod Ø= 5 mm

H = 270.5 mm

V = 80 mm

 

 

DIAGRAMS

 

Horizontal and verticall pattern in free space, no loss condition

 

 

WORKING CONDITION

Frequency bandwidth for SWR=1.5 (MHz)

Z (Ώ)

at 432.100 MHz

SWR

at 145.000 MHz

Lowest

Highest

417.400

440.200

197.1

1.08:1
       

 

SWR DIAGRAMS (loss included for Al)

SWR curve for amateur bandwidth 432 – 435 MHz

Frequency bandwidth for SWR = 1.5

 

COMPARISON (inserted in a part of VE7BQH table, where it belongs according to its boom length)

TYPE OF

ANTENNA

SINGLE ANTENA

FOUR ANTENNAS IN H-STACK

L

(λ)   

GAIN

(dBi)

Z

(ohms)

VSWR

Bandwidth

E

(m)

H

(m)

Ga

(dBd)

Tlos

(K)

Ta

(K)

G/T

(dB)

EAntenna 432LFA12

3.31

15.32

50.1

1.45:1

1.23

1.14

21.24

4.3

33.2

6.03

KF2YN Boxkite 13

3.37

17.38

50.9

1.09:1

1.63

1.50

23.29

9.3

39.4

7.35

Innov 13 LFA

3.72

15.92

50.1

1.15:1

1.31

1.23

21.85

4.5

30.9

6.96

YU7EF EF7013M-6

3.83

16.11

49.4

1.06:1

1.33

1.25

22.01

4.7

32.9

6.84

F9FT 19

4.02

15.96

55.7

1.14:1

1.33

1.26

21.88

6.1

39.1

5.96

DG7YBN Tonna 19 mod

4.02

16.17

44.7

1.15:1

1.35

1.27

22.07

6.1

33.8

6.82

InnoV 14 LFA

4.03

16.46

52.6

1.14:1

1.38

1.32

22.31

4.5

30.0

7.42

X72605XL1Q

4.04

17.49

198.2

1.08:1

1.74

1.90

23.59

4.2

27.5

9.19

DG7YBN 14

4.06

16.38

49.4

1.51:1

1.38

1.31

22.30

3.5

30.7

7.42

YU7EF EF7014M-6

4.24

16.50

49.5

1.11:1

1.39

1.2

22.39

4.5

33.3

7.17

RA3AQ AQ70-14f

4.30

16.63

52.8

1.09:1

1.42

1.34

22.54

6.9

33.6

7.28

KF2YN Boxkite 16

4.37

18.02

49.1

1.06:1

1.74

1.61

23.85

10.2

41.2

7.71

I0JXX 16JXX70

4.46

16.53

201.8

1.05:1

1.41

1.33

22.44

4.9

33.6

7.18

EAntenna 432LFA15

4.48

15.66

48.4

1.25:1

1.22

1.14

21.36

4.0

28.5

6.82

InnoV 15 LFA

4.59

16.68

51.1

1.08:1

1.42

1.34

22.57

4.8

30.0

7.81

YU7EF EF7015M-5

4.69

16.80

49.5

1.03:1

1.43

1.36

22.66

5.4

33.6

7.40

WiMo 15 (YU7EF)

4.89

17.06

174.5

3.05:1

1.46

1.30

22.87

4.3

30

8.10

InnoV 16 LFA

5.19

17.27

48.4

1.19:1

1.50

1.43

23.15

4.8

29.7

8.43

*InnoV 17 LFA

5.33

17.25

49.9

1.03:1

1.45

1.45

23.11

4.3

29.5

8.41

YU7EF EF7017M-5

5.56

17.41

50.7

1.06:1

1.52

1.44

23.22

5.6

33.4

7.98

*KF2YN Polly 18 CR

5.69

17.79

48.1

1.18:1

1.95

1.95

23.96

3.7

31.4

9.00

RA3AQ AQ70-18f

5.74

17.76

51.7

1.08:1

1.59

1.53

23.64

6.1

32.6

8.51

InnoV 18 LFA

5.76

17.49

49.8

1.05:1

1.52

1.45

23.33

4.3

28.9

8.72

KF2YN Boxkite 22

6.70

19.26

52.1

1.17:1

1.99

1.90

25.14

10.8

40.2

9.11

InnoV 20 LFA

6.99

18.28

50.5

1.09:1

1.73

1.67

24.31

5.0

28.1

9.82

RA3AQ AQ70-21f

7.14

18.54

52.3

1.07:1

1.73

1.67

24.41

6.9

31.0

9.51

+DG7YBN 23

7.55

18.65

48.4

1.56:1

1.76

1.70

24.51

3.8

27.8

10.08

YU7EF EF7021B-5

7.59

18.66

50.2

1.33:1

1.74

1.68

24.50

7.8

32.3

9.41

I0JXX 25JXX70

7.91

18.53

198.6

1.12:1

1.74

1.68

24.41

5.6

32.7

9.26

KF2YN Polly 24 CR

8.15

19.15

51.8

1.14:1

1.90

1.90

25.11

3.7

31.0

10.20

+YU7XL QY72410417

8.35

19.01

199.0

1.23:1

2.00

1.90

24.99

3.4

27.1

10.67

InnoV 23 LFA

8.40

19.16

45.2

1.23:1

1.87

1.82

25.08

5.6

28.2

10.58

DJ9BV BVO70-8.5wl

8.43

19.14

203.9

1.45:1

1.95

1.90

25.13

5.0

37.1

9.44

DJ9BV OPT70-8.5wl

8.44

19.04

186.1

1.56:1

1.80

1.75

24.87

4.9

33.9

9.57

EAntenna 432LFA23

8.44

18.96

47.8

3.99:1

1.90

1.84

24.89

8.1

29.6

10.17

YU7EF EF7023B-5

8.47

18.98

48.6

1.21:1

1.79

1.73

24.78

6.4

30.2

9.99

RA3AQ AQ70-24f

8.52

19.22

52.0

1.13:1

1.87

1.82

24.82

6.1

29.0

10.20

InnoV 24 LFA

8.89

19.32

46.4

1.19:2

1.92

1.87

25.25

5.9

28.0

10.78

YU7EF EF7024B-5

8.90

19.19

50.1

1.60:1

1.84

1.79

25.00

7.6

31.5

10.04

+YU7XL QY72810721

10.01

19.64

198.1

1.29:1

2.22

2.06

25.65

3.4

27.2

11.30

YU7EF EF7027B-5

10.18

19.67

50.3

1.64:1

1.94

1.89

25.47

7.8

32.2

10.39

WiMo 27 (YU7EF)

10.43

19.43

191.8

2.72:1

1.85

1.80

25.08

4.3

27.5

10.70

K1FO 33

10.61

20.03

200.5

1.19:1

2.08

2.04

25.95

6.1

31.8

10.93

RA3AQ AQ70-30f

11.39

20.33

51.6

1.10:1

2.08

2.04

26.15

5.8

28.3

11.61

InnoV 30 LFA

11.64

20.45

49.6

2.38:1

2.27

2.22

26.42

6.7

30.6

11.56

*YU7EF EF7032-5

12.49

19.97

51.3

3.44:1

1.94

1.90

25.59

6.6

29.9

10.84

InnoV 33 LFA

13.03

20.85

50.1

1.17:1

2.32

2.29

26.81

5.3

28.8

12.22

DJ9BV OPT70-13wl

13.29

20.85

183.0

1.44:1

2.35

2.29

26.80

5.2

33.4

11.56

I0JXX 39JXX70

13.53

20.16

194.0

1.19:1

2.00

1.97

25.86

6.3

30.9

10.97

InnoV 34 LFA

13.54

20.89

49.4

3.05:1

2.46

2.43

26.87

7.5

31.6

11.87

InnoV 35 LFA

14.00

20.95

49.1

2.69:1

2.46

2.43

26.93

7.5

31.4

11.96

InnoV 38 LFA

15.41

21.45

49.3

1.87:1

2.30

3.35

27.23

6.9

28.9

12.62

InnoV 40 LFA

16.26

21.67

48.0

2.27:1

2.69

2.66

27.67

7.5

29.4

12.99

Z(ohms) - measured on 432.100 MHz

Bandwidth – VSWR measured on 435.000 MHz

 

STACKING

(ALL DATA GIVEN IN ACCORDANCE WITH KF2YN CORRECTION, LOSS INCLUDED)

RECOMMENDED STACKING DISTANCES

 

Two antennas vertically

(mm)

Two antennas horizontally

(mm)

Four antennas in H-stack

(mm)

Horizontal distance

 

1740

1740

Vertical distance

1900

 

1900

TWO ANTENNAS STACKED VERTICALLY

DISTANCE
(mm)

G
(dBi)

TA
(K)

Tloss
(K)

G/T
(dB)

1900

20.55

27.5

4.2

+6.15

 

Two antennas stacked vertically

TWO ANTENNAS STACKED HORIZONTALLY

DISTANCE
(mm)

G
(dBi)

TA
(K)

Tloss
(K)

G/T
(dB)

1740

2053

29.5

4.2

+5.83

 

Two antennas stacked horizontally

FOUR ANTENNAS IN H-STACK

DISTANCE
(mm)

G
(dBi)

TA
(K)

Tloss
(K)

G/T
(dB)

H = 1740

23.59

27.5

4.2

+9.19

V = 1900

 

Four antennas in H-stack