ANTENNA QY20610XL4D1

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)

6

1865

11.55

20.64

20.74

15.45

47.0

58.0

296.7

-13.17

2.6

 

WORKING CONDITION:

Frequency for SWR=1.5 (MHz)

Z (Ώ)

at 144.100 MHz

SWR at 145.000 MHz

Lowest

Highest

Bandwidth

141.300

146.300

5.000

199.2

1.07:1

 

DIMENSIONS:

 

Ref

De1

De2

D1

D2

D3

DQ1

All elements made of Al tubes Ǿ10 mm

The height of the rectangle is 522 mm

All dimensions given in milimetres

Pos

0

60

290

389

729

1349

1865

Length

1016

1032

796

930

930

902

522

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)

QY20610XL4D1

0.90

9.40

199.2

1.07:1

3.04

1.98

15.38

2.4

242.5

-6.32

G4CQM 6

1.00

9.46

56.7

1.83:1

2.60

2.17

15.44

7.9

249.7

-6.38

KF2YN boxkite6

1.04

12.47

49.9

1.20:1

3.90

3.00

18.25

4.6

263.1

-3.80

Vine 6 FD

1.10

9.69

48.3

1.18:1

2.64

2.21

15.67

8.2

238.4

-5.95

G0KSC 6LFA

1.13

9.69

49.3

1.04:1

2.60

2.19

15.64

4.0

236.9

-5.96

DD0VF 6

1.16

9.73

27.2

1.07:1

2.63

2.22

15.71

5.5

240.1

-5.94

M2 2M7

1.28

9.94

204.9

1.14:1

2.65

2.26

15.76

3.7

245.0

-5.98

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

13.23

249.3

-10.74

110

12.65

310.1

-12.27

110

13.41

243.1

-10.45

120

12.98

297.3

-11.75

120

13.57

239.9

-10.23

130

13.20

291.2

-11.44

130

13.69

240.3

-10.11

140

13.39

288.1

-11.21

140

13.78

243.3

-10.08

150

13.55

286.9

-11.03

150

13.86

245.6

-10.04

160

13.69

287.1

-10.89

160

13.97

244.6

-9.91

170

13.81

288.3

-10.79

170

14.11

241.8

-9.72

180

13.93

290.0

-10.69

180

14.25

239.7

-9.55

190

14.04

292.2

-10.62

190

14.38

240.1

-9.42

200

14.14

294.4

-10.55

200

14.48

243.3

-9.38

210

14.23

296.4

-10.49

210

14.56

249.3

-9.40

220

14.32

298.3

-10.43

220

14.62

257.3

-9.48

230

14.39

299.8

-10.38

230

14.66

266.5

-9.60

240

14.46

300.9

-10.33

240

14.69

276.4

-9.72

250

14.52

301.6

-10.28

250

14.70

286.2

-9.87

260

14.57

301.9

-10.23

260

14.71

295.5

-10.00

270

14.61

301.9

-10.19

270

 

 

 

280

14.64

301.6

-10.16

280

 

 

 

290

14.67

301.1

-10.12

290

 

 

 

300

14.69

300.4

-10.09

300

 

 

 

310

14.70

299.7

-10.07

310

 

 

 

320

14.71

298.9

-10.05

320

 

 

 

330

14.72

298.1

-10.02

330

 

 

 

340

14.72

297.4

-10.01

340

 

 

 

350

14.71

296.8

-10.02

350

 

 

 

360

14.71

296.3

-10.01

360

 

 

 

*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

261

215

17.55

257.4

-6.55

Per DL6WU formula

304

198

17.52

242.5

-6.32

For max G/T

314

178

17.31

236.8

-6.43

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

11.55

20.64

20.64

15.45

47.0

58.0

296.7

-13.17

2.6

Vertical

11.60

20.57

15.59

20.84

57.6

46.8

269.7

-12.71

2.9

 

Horizontal polarisation patterns

 

Vertical polarisation patterns