ANTENNA QY21608XL4D9

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)

16

10435

17.04

28.86

21.72

18.16

28.0

29.0

215.5

-6.30

5.4

 

WORKING CONDITION:

Frequency for SWR=1,5 (MHz)

Z (Ώ)

at 144.100 MHz

SWR at 145.000 MHz

Lowest

Highest

Bandwidth

141.800

145.800

4.000

199.7

1.04:1

 

DIMENSIONS:

 

Ref

De1

De2

D1

D2

D3

DQ1

DQ2

DQ1

All elements made of Al rods Ǿ8mm

The height of all rectangles is 500

All dimensions given in milimetres

Pos

0

200

350

425

728

1292

1968

2742

3576

Length

1012

1016

856

942

950

926

906

887

522

 

DQ2

DQ3

DQ4

DQ5

DQ6

DQ7

DQ8

DQ9

 

Pos

4374

5284

6142

7056

7924

8796

9688

10435

 

Length

504

492

482

476

468

462

454

444

 

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)

K5GW 17

4.98

14.83

48.5

1.73:1

4.43

4.21

20.73

9.8

220.8

-0.56

SM2CEW 19

4.99

14.92

78.4

1.62:1

4.38

4.38

20.83

9.0

223.1

-0.50

G0KSC 16 OWL FD

4.99

14.75

51.7

1.10:1

4.25

4.25

20.63

9.0

218.8

-0.62

QY21608XL4D9

5.01

14.89

199.7

1.03:1

4.86

5.22

20.98

5.4

211.3

-0.12

BVO-5WL

5.02

15.00

47.4

1.26:1

4.58

4.58

20.97

6.9

236.2

-0.61

YU7EF 16M

5.12

14.90

49.9

1.03:1

4.36

4.16

20.70

7.0

221.9

-0.61

G0KSC 16LFA3R

5.14

15.12

49.9

1.10:1

5.10

5.10

21.16

4.8

212.0

+0.05

K1FO 19

5.16

15.10

204.9

1.25:1

4.49

4.27

20.98

3.4

225.4

-0.40

G0KSC 16LFA

5.21

15.40

49.2

1.13:1

4.56

4.33

21.29

11.0

212.7

+0.16

InnoV 16 LFA

5.23

15.12

47.3

1.13:1

4.52

4.23

20.99

7.0

213.7

-0.16

RU1AA 15

5.27

15.44

54.6

3.70:1

4.78

4.78

21.38

9.2

230.9

-0.10

M2 18XXX

5.30

15.00

199.7

1.07:1

4.56

4.36

20.90

7.4

231.9

-0.60

Z(ohms) - measured on 144.100 MHz

Bandwidth – VSWR measured on 145.000 MHz

Data taken from VE7BQH G/T table

 

DIAGRAMS (no loss included)

 

DIAGRAMS (losses included)

 

STACKING

Horizontal distance (cm)

G

(dBi)

TA

(K)

G/T

(dB)

Vertical distance (cm)

G

(dBi)

TA

(K)

G/T

(dB)

100

 

 

 

100

17.65

218.6

-5.72

110

17.25

234.9

-6.43

110

17.90

215.1

-5.42

120

17.63

229.4

-5.95

120

18.08

213.6

-5.18

130

17.92

225.8

-5.59

130

18.22

213.6

-5.04

140

18.13

223.2

-5.33

140

18.34

214.3

-4.94

150

18.30

221.5

-5.13

150

18.44

214.2

-4.84

160

18.43

220.5

-4.97

160

18.54

213.2

-4.71

170

18.54

219.8

-4.85

170

18.63

212.2

-4.60

180

18.63

219.4

-4.75

180

18.72

211.7

-4.50

190

18.72

219.3

-4.66

190

18.80

211.5

-4.42

200

18.80

219.2

-4.58

200

18.88

211.7

-4.34

210

18.87

219.2

-4.51

210

18.95

212.0

-4.28

220

18.94

219.2

-4.44

220

19.01

212.6

-4.23

230

19.01

219.1

-4.37

230

19.08

213.4

-4.18

240

19.07

218.9

-4.30

240

19.14

214.4

-4.14

250

19.14

218.6

-4.23

250

19.20

215.4

-4.10

260

19.20

218.2

-4.16

260

19.25

216.5

-4.07

270

19.27

217.7

-4.08

270

19.31

217.3

-4.03

280

19.33

217.1

-4.00

280

19.37

217.9

-3.98

290

19.39

216.3

-3.93

290

19.42

218.2

-3.94

300

19.45

215.6

-3.85

300

19.48

218.1

-3.88

310

19.52

214.8

-3.77

310

19.54

217.7

-3.81

320

19.58

214.1

-3.69

320

19.60

217.2

-3.74

330

19.64

213.4

-3.62

330

19.66

216.6

-3.66

340

19.70

212.9

-3.55

340

19.72

216.0

-3.59

350

19.76

212.4

-3.48

350

19.78

215.6

-3.52

360

19.81

212.1

-3.42

360

19.83

215.2

-3.47

370

19.86

211.9

-3.37

370

19.89

214.9

-3.40

380

19.91

211.8

-3.31

380

19.93

214.5

-3.35

390

19.96

211.7

-3.26

390

19.98

214.2

-3.30

400

20.00

211.8

-3.22

400

20.02

213.9

-3.25

410

20.04

211.9

-3.19

410

20.06

213.6

-3.20

420

20.07

212.0

-3.16

420

20.10

213.3

-3.16

430

20.10

212.1

-3.13

430

20.13

213.0

-3.12

440

20.13

212.3

-3.10

440

20.16

212.8

-3.09

450

20.15

212.4

-3.09

450

20.18

212.5

-3.06

460

20.17

212.5

-3.07

460

20.20

212.2

-3.03

470

20.19

212.5

-3.05

470

20.22

211.9

-3.01

480

20.21

212.6

-3.03

480

20.24

211.6

-2.98

490

20.22

212.6

-3.02

490

20.25

211.2

-2.96

500

20.24

212.6

-3.00

500

20.26

210.9

-2.95

510

20.25

212.7

-2.99

510

20.27

210.6

-2.93

520

20.25

212.7

-2.99

520

20.28

210.3

-2.91

530

20.25

212.7

-2.99

530

20.29

210.2

-2.90

540

20.25

212.7

-2.99

540

20.29

211.1

-2.90

550

20.26

212.8

-2.99

550

20.29

211.2

-2.90

*The Table is presented without KF2YN convergence correction applied and serves only to show which distance can be used with good

result. and which distances should be avoided. In H-stack it can be slightly changed.

 

BEST DISTANCES FOR 4 ANTENNAS IN H-STACK

Horizontal

distance (cm)

Vertical distance (cm)

G

(dBi)

TA

(K)

G/T

(dB)

Tloss

(K)

Remark

4300

4155

22.85

212.8

-0.40

5.4

Per DL6WU formula

4860

5220

23.13

211.3

-0.12

5.4

For max G/T

4860

5220

23.13

211.3

-0.12

5.4

For lowest temperature

 

 

XPOL VERSION

Horizontal components: Same as above

Vertical components: Same as above, except:

PERFORMANCES:

Polarisation

G (dBi)

F/B (dB)

F/Sh (dBi)

F/Sv (dBi)

Hor (◦)

Ver (◦)

Temp (◦K)

G/T (dB)

Tlos

(K)

Horizontal

17.04

28.86

21.72

18.16

28.0

29.0

215.5

-6.30

5.4

Vertical

17.20

28.72

15.72

19.11

27.8

27.0

219.5

-6.22

5.4

 

Horizontal polarisation patterns

 

 

Vertical polarisation patterns