ANTENNA X72806XL4Q

 

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)

17.46

32.64

28.41

19.37

29.0

24.0

28.2

3.6

+2.99

 

DIMENSIONS

Element

Ref

De

D1, D2

D3,D4

D5,D6

D7,D8

D9,D10

D11,D12

D13,D14

Position

0

122

178

315

473

578

752

1008

1256

Length

333

274

303

297

289

287.5

287.5

285.5

281.5

Height

0

±80

±65

±107

±140

±170

±195

±225

±250

Element

D15,D16

D17,D18

D18,D20

D21,D22

D23,D24

 

 

 

 

Position

1515

1783

2055

2322

2588

2815

 

 

 

Length

279.5

277.5

273.5

269.5

265.5

258.5

 

 

 

Height

±270

±285

±295

±295

±280

±265

 

 

 

Remark

All elements made of Al rods Ǿ6 mm

All dimensions given in milimetres

No boom correction included.

 

Ref = Reflector

De =  Dipole (radiator)

D  =   Director

 

CONSTRUCTION OF RADIATOR

Material: Aluminum rod Ø= 6 mm

H = 274.0 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

442.100

200.2

1.02:1
       

 

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

X72606XL4Q

4.04

17.48

200.2

1.02:1

1.74

1.86

23.56

3.6

27.2

9.22

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

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)

1860

20.47

27.2

3.6

+6.13

 

Two antennas stacked vertically

TWO ANTENNAS STACKED HORIZONTALLY

DISTANCE
(mm)

G
(dBi)

TA
(K)

Tloss
(K)

G/T
(dB)

1740

2048

28.2

3.6

+5.99

 

Two antennas stacked horizontally

FOUR ANTENNAS IN H-STACK

DISTANCE
(mm)

G
(dBi)

TA
(K)

Tloss
(K)

G/T
(dB)

H = 1740

23.56

27.2

3.6

+9.22

V = 1900

 

Four antennas in H-stack