ANTENNA X73808XL1Q

 

DESCRIPTION

 

Radiator

Number of  yagi elements

Boomlength (mm)

 

Double rectangle

37 + radiator

4335

 

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)

18.94

38.14

26.87

16.49

24.2

20.0

27.2

2.7

+4.59

 

DIMENSIONS

Element

Ref

De

D1, D2

D3,D4

D5,D6

D7,D8

D9,D10

D11,D12

D13,D14

D15,D16

Position

0

126

195

322

481

608

776

1014

1266

1522

Length

330

268.5

295.5

290.5

287.5

284

281

279.5

277.5

277

Height

0

±80

±67

±112

±148

±181

±202

±235

±258

±268

Element

D17,D18

D19,D20

D21,D22

D23,D24

D25,D26

D27,D28

D29,D30

D31,D32

D33,D34

D35,D36

Position

1788

2056

2342

2626

2896

3198

3492

3792

4086

4335

Length

274.5

269.5

266.5

265

261.5

256.5

253.5

251

251

249

Height

±278

±284

±284

±282

±280

±278

±275

±269

±269

±252

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= 8 mm

H = 268.5 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

415.000

440.500

199.9

1.04:1
       

 

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)

+Konni F20 DL6WU

5.94

17.52

220.4

1.07:1

1.58

1.51

23.39

1.5

31.7

8.37

+DG7YBN 19

5.94

17.80

49.3

1.28:1

1.60

1.54

23.68

3.6

29.5

8.98

YU7EF EF7018M-5

6.00

17.61

49.3

1.08:1

1.54

1.48

23.39

5.1

31.7

8.39

K1FO 22

6.10

17.85

200.8

1.43:1

1.53

1.56

23.75

4.8

33.6

8.49

EAntenna 432LFA18

6.13

17.88

47.6

1.42:1

1.61

1.55

23.76

5.6

29.7

9.02

X73808XL1Q

6.25

18.94

199.9

1.04:1

1.98

2.00

24.93

2.7

26.1

10.81

YU7EF EF7019B-5

6.43

17.91

50.5

1.12:1

1.60

1.54

23.72

5.7

32.7

8.59

KF2YN Polly 20 CR

6.50

18.30

48.8

1.21:1

1.90

1.90

24.43

3.8

31.1

9.50

InnoV 19 LFA

6.54

18.18

47.6

1.09:1

1.68

1.63

24.10

5.0

29.2

9.45

Tonna 21 DX

6.61

17.91

58.4

2.32:1

1.67

1.61

23.80

6.7

41.3

7.63

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

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

 

1.98

1.98

Vertical distance

2.00

 

2.00

TWO ANTENNAS STACKED VERTICALLY

DISTANCE
(mm)

G
(dBi)

TA
(K)

Tloss
(K)

G/T
(dB)

2.00

21.92

26.4

2.7

+7.71

 

Two antennas stacked vertically

TWO ANTENNAS STACKED HORIZONTALLY

DISTANCE
(mm)

G
(dBi)

TA
(K)

Tloss
(K)

G/T
(dB)

1.98

21.98

26.9

2.7

+7.69

 

Two antennas stacked horizontally

FOUR ANTENNAS IN H-STACK

DISTANCE
(mm)

G
(dBi)

TA
(K)

Tloss
(K)

G/T
(dB)

H = 1980

24.97

26.1

2.7

+10.81

V = 2000

 

Four antennas in H-stack