ANTENNA QY21710XL4D10

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)

17

11065

17.34

34.45

20.82

17.14

27.0

27.6

217.3

-6.03

4.6

 

WORKING CONDITION:

Frequency for SWR=1,5 (MHz)

Z (Ώ)

at 144.100 MHz

SWR at 145.000 MHz

Lowest

Highest

Bandwidth

141.900

145.800

3.900

200.6

1.08:1

 

DIMENSIONS:

 

Ref

De1

De2

D1

D2

D3

D4

D5

DQ1

All elements of Al tubes Ǿ10 mm

The height of rectangles 500 mm

All dimensions given in milimetres

Pos

0

210

330

410

701

1246

1926

2691

3530

Length

1009

1024

900

936

947

920

900

880

522

 

DQ2

DQ3

DQ4

DQ5

DQ6

DQ7

DQ8

DQ9

DQ10

Pos

4352

5241

6122

6976

7855

8669

9545

10375

11065

Length

503

492

484

478

472

466

462

456

448

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)

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

QY21710XL4D10

5.31

15.19

200.6

1.08:1

5.18

5.18

21.31

4.6

211.2

+0.22

YU7EF 16

5.42

15.15

43.9

2.50:1

4.46

4.27

20.95

7.3

218.9

-0.30

G0KSC 17 LFA

5.67

15.43

48.3

1.23:1

4.63

4.43

21.30

4.9

212.0

+0.19

InnoV 17 LFA

5.69

15.36

50.0

1.26:1

4.59

4.39

21.22

7.2

211.8

+0.11

M2 19XXX

5.71

15.28

201.1

1.42:1

4.70

4.52

21.20

7.7

231.3

-0.29

M2 32 XPOL

5.74

15.81

205.4

3.80:1

5.08

5.08

21.77

12.8

232.4

+0.26

YU7EF 17X

5.74

15.36

50.0

1.08:1

4.59

4.39

21.19

8.5

216.0

-0.02

RU1AA 17

5.75

15.64

50.0

1.08:1

4.81

5.00

21.55

8.1

229.6

+0.09

G0KSC 17OWL-FD

5.77

15.62

112.0

1.10:1

5.15

5.00

21.63

7.3

221.1

+0.33

DK7ZB 17

5.82

15.61

26.8

1.19:1

5.01

4.85

21.59

8.6

227.8

+0.16

YU7EF 17

5.88

15.70

41.2

2.92:1

4.85

4.63

21.53

9.6

223.8

+0.18

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

17.72

222.3

-5.73

110

17.34

245.0

-6.53

110

18.00

218.1

-5.36

120

17.75

235.3

-5.95

120

18.21

215.9

-5.11

130

18.06

230.2

-5.54

130

18.38

215.1

-4.92

140

18.29

226.7

-5.25

140

18.51

214.8

-4.78

150

18.47

224.4

-5.02

150

18.63

213.8

-4.64

160

18.61

222.9

-4.85

160

18.74

212.5

-4.51

170

18.73

222.0

-4.71

170

18.84

211.8

-4.39

180

18.83

221.4

-4.60

180

18.93

211.6

-4.30

190

18.92

221.2

-4.50

190

19.01

211.8

-4.22

200

19.01

221.1

-4.41

200

19.08

212.2

-4.16

210

19.08

221.2

-4.34

210

19.15

212.8

-4.10

220

19.15

221.3

-4.28

220

19.22

213.5

-4.05

230

19.22

221.3

-4.21

230

19.28

214.5

-4.01

240

19.28

221.3

-4.15

240

19.34

215.7

-3.97

250

19.35

221.2

-4.08

250

19.40

216.9

-3.94

260

19.41

221.0

-4.01

260

19.45

218.3

-3.92

270

19.47

220.6

-3.94

270

19.51

219.6

-3.88

280

19.53

220.0

-3.87

280

19.56

220.6

-3.85

290

19.59

219.3

-3.80

290

19.61

221.3

-3.82

300

19.65

218.6

-3.72

300

19.67

221.5

-3.76

310

19.71

217.8

-3.65

310

19.73

221.4

-3.70

320

19.77

216.9

-3.57

320

19.79

221.0

-3.63

330

19.84

216.1

-3.48

330

19.85

220.4

-3.56

340

19.90

215.4

-3.41

340

19.91

219.7

-3.48

350

19.95

214.8

-3.35

350

19.97

219.0

-3.41

360

20.01

214.3

-3.27

360

20.03

218.3

-3.34

370

20.07

213.9

-3.21

370

20.08

217.7

-3.27

380

20.12

213.6

-3.15

380

20.14

217.1

-3.20

390

20.17

213.4

-3.10

390

20.19

216.5

-3.14

400

20.22

213.3

-3.04

400

20.24

216.0

-3.08

410

20.26

213.3

-3.00

410

20.28

215.6

-3.03

420

20.30

213.3

-2.96

420

20.32

215.2

-2.98

430

20.33

213.4

-2.94

430

20.36

214.8

-2.94

440

20.36

213.4

-2.91

440

20.39

214.4

-2.90

450

20.39

213.5

-2.88

450

20.42

214.1

-2.86

460

20.42

213.6

-2.85

460

20.44

213.7

-2.83

470

20.44

213.7

-2.83

470

20.47

213.3

-2.79

480

20.46

213.8

-2.81

480

20.49

212.9

-2.76

490

20.48

213.9

-2.80

490

20.51

212.4

-2.74

500

20.50

214.0

-2.78

500

20.52

212.0

-2.72

510

20.51

214.1

-2.77

510

20.54

211.6

-2.69

520

20.52

214.2

-2.76

520

20.55

211.2

-2.67

530

20.53

214.3

-2.75

530

20.56

210.9

-2.65

540

20.53

214.4

-2.76

540

20.56

210.7

-2.65

550

20.54

214.5

-2.75

550

20.57

210.7

-2.64

 

 

 

 

560

20.57

210.8

-2.64

 

 

 

 

570

20.57

211.1

-2.65

*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

4456

4361

23.19

213.5

-0.10

Per DL6WU formula

5180

5460

23.46

211.2

+0.22

For max G/T

5180

5460

23.46

211.2

+0.22

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

17.34

34.45

20.82

17.14

27.0

27.6

217.3

-6.03

4.6

Vertical

17.47

56.70

15.06

18.01

26.6

26.0

221.0

-5.97

4.9

 

Horizontal polarisation patterns

 

 

 

Vertical polarisation patterns