ANTENNA QY21510XL4D8

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)

15

9485

16.83

27.29

19.83

17.34

28.4

29.4

219.2

-6.57

4.9

 

WORKING CONDITION:

Frequency for SWR=1,5 (MHz)

Z (Ώ)

at 144.100 MHz

SWR at 145.000 MHz

Lowest

Highest

Bandwidth

142.200

145.900

3.700

200.0

1.04:1

 

DIMENSIONS:

 

Ref

De1

De2

D1

D2

D3

D4

D5

All elements of Al tubes Ǿ10 mm

The height of rectangles 500 mm

All dimensions given in milimetres

Pos

0

205

335

416

711

1265

1949

2715

Length

1009

1010

900

937

947

918

899

879

 

DQ1

DQ2

DQ3

DQ4

DQ5

DQ6

DQ7

DQ8

Pos

3545

4366

5243

6128

6991

7898

8736

9485

Length

524

504

498

486

478

472

466

456

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)

QY21510XL4D8

4.60

14.68

199.9

1.04:1

4.64

4.58

20.72

4.9

216.3

-0.48

RA3AQ-14

4.61

14.71

50.0

1.19:1

4.27

4.07

20.55

5.0

219.1

-0.71

G4CQM 16

4.64

14.55

50.9

1.78:1

4.39

4.18

20.47

8.8

234.6

-1.08

YU7EF 15M

4.68

14.59

48.6

1.03:1

4.21

4.00

20.40

7.0

221.7

-0.89

DK7ZB 14

4.73

14.92

26.9

1.50:1

4.59

4.39

20.87

6.8

233.0

-0.65

DG7YBN 16

4.74

14.79

46.6

1.18:1

4.45

4.60

20.79

6.1

222.4

-0.53

G0KSC 15LFA

4.75

14.72

49.9

1.17:1

4.60

4.45

20.72

5.9

215.0

-0.45

InnoV 15 LFA

4.76

14.73

49.0

1.17:1

4.60

4.45

20.74

6.6

215.4

-0.44

K1FO 18

4.78

14.37

199.9

1.32:1

4.36

4.16

20.62

2.8

228.6

-0.82

InnoV 15 OWL

4.78

14.79

52.2

1.32:1

4.36

4.15

20.66

7.6

217.9

-0.57

M2 28 XPOL

4.81

15.18

200.1

5.19:1

4.83

4.83

21.14

13.9

243.1

-0.57

DJ9BV 4.8

4.82

14.63

49.7

1.29:1

4.40

4.19

20.48

6.6

242.8

-1.22

M2 5WL

4.83

14.64

200.9

1.42:1

4.56

4.36

20.58

3.7

248.1

-1.22

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

17.15

225.3

-6.36

110

16.40

263.3

-7.77

110

17.47

219.8

-5.93

120

16.85

241.6

-6.96

120

17.70

216.7

-5.63

130

17.21

234.9

-6.48

130

17.88

215.2

-5.42

140

17.48

230.8

-6.13

140

18.02

214.4

-5.27

150

17.68

228.0

-5.88

150

18.15

213.4

-5.12

160

17.84

226.1

-5.68

160

18.27

212.4

-4.27

170

17.97

225.0

-5.53

170

18.37

212.0

-4.87

180

18.08

224.2

-5.40

180

18.47

212.1

-4.77

190

18.19

223.7

-5.28

190

18.55

212.5

-4.70

200

18.28

223.3

-5.19

200

18.64

213.3

-4.62

210

18.37

223.1

-5.09

210

18.71

214.2

-4.57

220

18.45

222.7

-5.00

220

18.78

215.5

-4.53

230

18.52

222.4

-4.93

230

18.85

216.9

-4.49

240

18.60

221.9

-4.84

240

18.92

218.5

-4.45

250

18.67

221.3

-4.76

250

18.98

220.1

-4.42

260

18.74

220.6

-4.67

260

19.04

221.5

-4.39

270

18.81

219.9

-4.59

270

19.10

222.5

-4.35

280

18.88

219.1

-4.50

280

19.16

223.0

-4.30

290

18.95

218.3

-4.41

290

19.23

223.1

-4.23

300

19.02

217.5

-4.33

300

19.29

222.7

-4.17

310

19.09

216.8

-4.24

310

19.36

222.0

-4.08

320

19.16

216.2

-4.16

320

19.43

221.2

-3.99

330

19.22

215.7

-4.09

330

19.50

220.3

-3.91

340

19.28

215.3

-4.02

340

19.56

219.5

-3.83

350

19.33

215.0

-3.97

350

19.62

218.7

-3.76

360

19.38

214.9

-3.92

360

19.68

218.2

-3.68

370

19.43

214.9

-3.87

370

19.73

217.7

-3.62

380

19.47

215.0

-3.83

380

19.78

217.4

-3.57

390

19.51

215.2

-3.79

390

19.82

217.2

-3.52

400

19.55

215.4

-3.76

400

19.86

217.0

-3.48

410

19.58

215.6

-3.73

410

19.89

216.8

-3.45

420

19.60

215.9

-3.72

420

19.92

216.7

-3.41

430

19.62

216.2

-3.70

430

19.95

216.6

-3.38

440

19.64

216.5

-3.69

440

19.97

216.4

-3.36

450

19.66

216.7

-3.67

450

19.99

216.2

-3.33

460

19.67

217.0

-3.67

460

20.01

215.9

-3.31

470

19.68

217.2

-3.66

470

20.02

215.5

-3.29

480

19.69

217.4

-3.66

480

20.03

215.1

-3.27

490

19.70

217.6

-3.65

490

20.04

214.7

-3.25

500

19.71

217.8

-3.64

500

20.05

214.2

-3.23

510

19.71

217.9

-3.64

510

20.06

213.8

-3.21

520

19.71

218.1

-3.65

520

20.06

213.4

-3.21

 

 

 

 

530

20.07

213.2

-3.19

 

 

 

 

540

20.07

213.1

-3.19

 

 

 

 

550

20.07

213.2

-3.19

*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)

Remark

4240

4099

22.71

215.2

-0.61

Per DL6WU formula

4640

4580

22.87

216.3

-0.48

For max G/T

3640

4580

22.59

213.4

-0.70

For lowest temperature

 

 

XPOL VERSION

Horizontal components: Same as above

Vertical components: Same as above, except:

PERFORMANCES:

Polarization

G (dBi)

F/B (dB)

F/Sh (dBi)

F/Sv (dBi)

Hor

(◦)

Ver

(◦)

Temp (◦K)

G/T (dB)

Tlos

(K)

Horizontal

16.83

27.29

19.83

17.34

28.4

29.4

219.2

-6.57

4.9

Vertical

16.93

26.86

15.45

18.39

28.4

27.6

222.1

-6.54

4.9

 

Horizontal polarisation patterns

 

 

Vertical polarisation patterns