ANTENNA X73608XL2Q

 

DESCRIPTION

 

Radiator

Number of  yagi elements

Boomlength (mm)

 

Double rectangle

35 + radiator

4025
       

 

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)

18.73

39.37

27.48

18.02

25.0

20.6

27.3

2.7

+4.36

 

DIMENSIONS

Element

Ref

De

D1, D2

D3,D4

D5,D6

D7,D8

D9,D10

D11,D12

D13,D14

D15,D16

Position

0

127

195

322

481

608

776

1014

1266

1522

Length

330

268.5

295.5

290.5

287

284

281

279.5

277.5

277

Height

0

±80

±67.5

±112

±146

±180

±200

±233

±256

±270

Element

D17,D18

D19,D20

D21,D22

D23,D24

D25,D26

D27,D28

D29,D30

D31,D32

D33,D34

 

Position

1788

2056

2342

2626

2896

3198

3476

3776

4025

 

Length

274.5

269.5

265.5

263.5

261.5

255

253

251

251

 

Height

±285

±295

±298

±299

±296

±293

±288

±286

±265

 

Remark

All elements made of Al rods Ǿ8 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

413.000

441.200

198.7

1.05:1

 

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)

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

X73608XL2Q

5.80

18.73

199.4

1.05:1

1.96

1.94

24.74

2.7

26.1

10.58

+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

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

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

 

1960

1960

Vertical distance

1940

 

1940

TWO ANTENNAS STACKED VERTICALLY

DISTANCE
(mm)

G
(dBi)

TA
(K)

Tloss
(K)

G/T
(dB)

1940

21.69

26.4

2.7

+7.48

 

Two antennas stacked vertically

TWO ANTENNAS STACKED HORIZONTALLY

DISTANCE
(mm)

G
(dBi)

TA
(K)

Tloss
(K)

G/T
(dB)

1960

21.77

27.0

2.7

+7.45

 

Two antennas stacked horizontally

FOUR ANTENNAS IN H-STACK

DISTANCE
(mm)

G
(dBi)

TA
(K)

Tloss
(K)

G/T
(dB)

H = 1960

24.74

26.0

2.7

+10.58

V = 1940

 

Four antennas in H-stack