ANTENNA QY21505XL3D10

PERFORMANCES:

No of ele

L (mm)

G (dBi)

F/B (dB)

F/Sh (dB)

F/Sv (dB)

Hor (◦)

Ver (◦)

Temp (◦K)

G/T (dB)

Tlos

(K)

15

9145

16.51

25.10

24.00

18.48

30.0

30.4

219.2

-6.89

7.2

 

WORKING CONDITION:

Frequency for SWR=1,5 (MHz)

Z (Ώ)

at 144.100 MHz

SWR at 145.000 MHz

Lowest

Highest

Bandwidth

141.400

145.700

4.400

199.5

1.08:1

 

DIMENSIONS:

 

Ref

De1

De2

D1

D2

D3

DQ1

DQ2

DQ3

All elements made of Al rods Ǿ5 mm

The height of all rectangles is 500 mm

All dimensions given in milimetres

Pos

0

200

325

419

706

1073

1573

2226

3023

Length

1020

1020

824

951

939

919

559

537

519

 

DQ4

DQ5

DQ6

DQ7

DQ8

DQ9

DQ10

 

 

Pos

3873

4769

5644

6563

7504

8416

9145

 

 

Length

505

497

487

477

467

458

450

 

 

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)

QY21505XL3D10

4.39

14.36

199.6

1.08:1

4.22

4.12

20.30

7.2

217.3

-0.92

K1FO 17

4.40

14.44

27.7

1.25:1

4.24

4.02

20.34

4.9

229.5

-1.12

DJ9BV 4.4

4.41

14.32

38.3

1.36:1

4.27

4.07

20.18

6.6

251.5

-1.68

SHARK 20

4.47

14.34

42.8

1.05:1

4.33

4.10

20.19

3.9

258.5

-1.79

I0JXX 16

4.47

14.36

30.4

1.05:1

4.05

4.05

20.24

8.4

217.5

-0.98

CC17B2

4.49

14.53

200.1

1.20:1

4.27

4.07

20.43

5.9

228.6

-1.01

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

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

17.12

225.9

-6.41

110

16.97

241.5

-6.85

110

17.44

217.9

-5.93

120

17.42

230.1

-6.19

120

17.64

215.8

-5.68

130

17.65

227.6

-5.91

130

17.78

217.6

-5.58

140

17.80

226.2

-5.73

140

17.87

220.8

-5.56

150

17.93

225.3

-5.58

150

17.96

222.4

-5.50

160

18.03

224.7

-5.47

160

18.06

221.7

-5.38

170

18.12

224.5

-5.38

170

18.15

220.4

-5.27

180

18.20

224.5

-5.30

180

18.24

219.8

-5.16

190

18.27

224.6

-5.23

190

18.32

219.6

-5.08

200

18.34

224.7

-5.16

200

18.39

219.6

-5.01

210

18.41

224.6

-5.09

210

18.46

219.7

-4.94

220

18.48

224.4

-5.02

220

18.53

219.8

-4.87

230

18.55

224.0

-4.94

230

18.60

219.9

-4.81

240

18.62

223.4

-4.86

240

18.66

220.2

-4.75

250

18.69

222.6

-4.77

250

18.72

220.4

-4.70

260

18.76

221.7

-4.68

260

18.78

220.6

-4.64

270

18.83

220.7

-4.59

270

18.84

220.6

-4.58

280

18.90

219.7

-4.50

280

18.91

220.3

-4.51

290

18.97

218.7

-4.41

290

18.97

219.9

-4.44

300

19.04

217.7

-4.32

300

19.03

219.3

-4.36

310

19.10

216.8

-4.24

310

19.10

218.5

-4.28

320

19.17

216.0

-4.16

320

19.16

217.8

-4.21

330

19.23

215.3

-4.08

330

19.22

217.2

-4.13

340

19.29

214.7

-4.01

340

19.28

216.8

-4.07

350

19.35

214.3

-3.94

350

19.34

216.6

-4.00

360

19.40

214.1

-3.89

360

19.39

216.6

-3.95

370

19.44

214.0

-3.85

370

19.44

216.6

-3.90

380

19.49

214.0

-3.80

380

19.48

216.6

-3.86

390

19.52

214.2

-3.77

390

19.52

216.5

-3.82

400

19.56

214.5

-3.74

400

19.56

216.5

-3.78

410

19.58

214.8

-3.72

410

19.59

216.5

-3.75

420

19.61

215.2

-3.70

420

19.62

216.5

-3.72

430

19.63

215.7

-3.69

430

19.64

216.5

-3.70

440

19.65

216.1

-3.68

440

19.66

216.5

-3.68

450

19.66

216.5

-3.68

450

19.68

216.4

-3.66

460

19.67

216.9

-3.68

460

19.69

216.3

-3.64

 

 

 

 

470

19.71

216.1

-3.62

 

 

 

 

480

19.72

215.9

-3.61

 

 

 

 

490

19.73

215.6

-3.59

 

 

 

 

500

19.73

215.3

-3.58

 

 

 

 

510

19.74

215.0

-3.57

 

 

 

 

520

19.74

214.7

-3.56

*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 (mm)

Vertical distance (mm)

G

(dBi)

TA

(K)

G/T

(dB)

Tloss

(K)

Remark

4.019

3.967

22.34

216.1

-1.00

7.2

Per DL6WU formula

4.280

4.280

22.45

217.2

-0.92

7.2

For max G/T

3.780

4.180

22.32

215.4

-1.01

7.2

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

16.51

23.32

26.87

17.61

32.4

33.0

219.2

-6.89

7.2

Vertical

16.65

24.84

14.70

18.93

29.6

29.0

222.2

-6.82

6.0

 

Horizontal polarisation patterns

 

Vertical polarisation patterns