ANTENNA QY20906XL3D3

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)

9

4205

14.02

31.42

20.00

18.83

38.0

41.6

235.6

-9.70

5.1

 

WORKING CONDITION:

Frequency for SWR=1,5 (MHz)

Z (Ώ)

at 144.100 MHz

SWR at 145.000 MHz

Lowest

Highest

Bandwidth

141.200

146.400

5.200

198.7

1.07:1

 

DIMENSIONS:

 

Ref

De1

De2

D1

D2

D3

D4

DQ1

DQ2

DQ3

All elements made of Al rods Ǿ6 mm

The height of all rectangles is 500

All dimensions given in milimetres

Pos

0

210

350

423

722

1260

1965

2693

3495

4205

Length

1016

1004

896

945

954

927

907

528

508

496

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)

QY20906XL3D3

2.02

11.87

198.7

1.07:1

3.50

2.86

17.82

5.1

233.5

-3.71

I0JXX 8

2.04

12.11

200.1

3.00:1

3.46

3.17

18.10

9.3

257.3

-3.86

DG0OPK 9

2.07

11.45

28.4

1.11:1

3.04

2.72

17.34

5.7

231.9

-4.16

DK7ZB 8

2.09

12.01

28.0

1.26:1

3.40

3.10

18.02

4.8

253.6

-3.87

G0KSC 9OWA

2.09

11.99

49.1

1.30:1

3.33

3.04

17.96

4.9

247.0

-3.82

RA3AQ 9S

2.12

12.04

47.1

1.08:1

3.35

3.06

18.02

4.7

246.5

-3.75

M2 9SSB

2.12

11.96

200.6

1.26:1

3.33

3.04

17.92

10.8

245.9

-3.84

WiMo WX220 XPOL

2.13

11.23

202.0

1.08:1

2.94

2.94

17.44

8.4

300.8

-5.19

Gulf Alpha 9

2.13

11.62

203.3

1.15:1

3.26

2.97

17.64

4.6

266.2

-4.46

Gulf Alpha 9 XPOL

2.13

11.60

203.9

1.15:1

3.12

3.12

17.62

5.0

267.6

-4.50

DJ9BV 2.1

2.13

11.89

44.9

1.30:1

3.33

3.04

17.87

5.8

255.2

-4.05

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)

 

SWR DIAGRAMS (loss included for Al)

 

 

STACKING

Horizontal distance (cm)

G

(dBi)

TA

(K)

G/T

(dB)

Vertical distance (cm)

G

(dBi)

TA

(K)

G/T

(dB)

100

 

 

 

100

15.29

227.0

-8.25

110

14.69

259.4

-9.44

110

15.44

221.5

-7.99

120

15.10

251.6

-8.90

120

15.58

218.7

-7.79

130

15.35

245.1

-8.53

130

15.70

218.2

-7.66

140

15.54

240.2

-8.25

140

15.80

218.8

-7.58

150

15.69

236.7

-8.04

150

15.90

219.2

-7.48

160

15.83

234.3

-7.85

160

16.00

219.4

-7.39

170

15.95

232.7

-7.70

170

16.10

220.2

-7.30

180

16.06

231.8

-7.57

180

16.20

221.5

-7.23

190

16.16

231.3

-7.46

190

16.29

223.0

-7.17

200

16.24

231.2

-7.37

200

16.38

224.1

-7.10

210

16.34

231.4

-7.28

210

16.47

224.7

-7.02

220

16.43

231.8

-7.20

220

16.56

224.8

-6.94

230

16.51

232.2

-7.13

230

16.65

224.5

-6.84

240

16.60

232.6

-7.05

240

16.74

224.4

-6.75

250

16.68

233.1

-6.98

250

16.83

224.4

-6.66

260

16.75

233.5

-6.91

260

16.90

225.4

-6.61

270

16.83

233.9

-6.84

270

16.98

226.7

-6.55

280

16.89

234.2

-6.79

280

17.04

228.6

-6.53

290

16.95

234.5

-6.73

290

17.09

230.8

-6.52

300

17.00

234.7

-6.69

300

17.14

233.3

-6.52

310

17.05

234.9

-6.64

310

17.18

235.8

-6.53

320

17.09

235.0

-6.60

320

17.21

238.3

-6.54

330

17.13

235.1

-6.57

330

 

 

 

340

17.15

235.2

-6.55

340

 

 

 

350

17.18

235.3

-6.52

350

 

 

 

360

17.19

235.3

-6.51

360

 

 

 

370

17.21

235.4

-6.49

 

 

 

 

380

17.22

235.4

-6.48

 

 

 

 

390

17.22

235.4

-6.48

 

 

 

 

400

17.22

235.5

-6.48

 

 

 

 

*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

3013

2777

19.41

244.0

-4.46

3.7

Per DL6WU formula

3460

2760

19.61

242.5

-4.22

3.7

For max G/T

3080

2380

19.12

238.3

-4.65

3.7

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

14.02

31.42

20.00

18.83

38.0

41.6

235.6

-9.70

5.1

Vertical

13.96

39.30

19.67

21.03

42.0

38.2

234.1

-9.73

5.4

 

Horizontal polarisation patterns

 

 

Vertical polarisation patterns