ANTENNA QY21105XL5D6

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)

11

5505

14.80

22.11

24.43

17.25

36.0

37.4

226.5

-8.75

5.5

 

WORKING CONDITION:

Frequency for SWR=1,5 (MHz)

Z (Ώ)

at 144.100 MHz

SWR at 145.000 MHz

Lowest

Highest

Bandwidth

141.100

146.000

5.500

199.2

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

320

416

708

1075

1588

2231

3038

Length

1020

1020

820

945

935

919

554

532

512

 

DQ4

DQ5

DQ6

 

 

 

 

 

 

Pos

3855

4726

5505

 

 

 

 

 

 

Length

498

482

472

 

 

 

 

 

 

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)

QY21105XL5D6

2.65

12.65

199.2

1.08:1

4.12

3.36

18.64

5.5

227.7

-2.79

I0JXX 12

2.68

12.67

26.9

1.31:1

3.58

3.30

18.64

6.9

238.0

-2.97

BQH 12J

2.80

12.80

50.0

1.01:1

3.67

3.40

18.83

4.3

246.2

-2.93

CT1FFU 10C

2.82

13.04

27.2

1.23:1

3.62

3.31

18.93

4.2

222.9

-2.40

M2 12

2.84

12.68

37.0

1.13:1

3.48

3.20

18.54

5.4

232.5

-2.97

KF2YN Boxkite12

2.84

14.90

48.5

1.22:1

6.00

4.40

20.84

5.9

227.4

-0.58

BQH 10

2.86

13.05

22.6

1.47:1

3.69

3.43

19.00

7.0

232.5

-2.51

WB9UWA 12

2.87

12.73

23.9

1.47:1

3.48

3.20

18.61

7.0

223.0

-2.72

DK7ZB 10

2.87

13.00

25.8

1.61:1

3.87

3.60

19.17

6.8

247.5

-2.62

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 (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

15.71

225.5

-7.85

110

15.67

244.9

-8.21

110

15.93

220.5

-7.53

120

15.94

238.3

-7.82

120

16.09

218.8

-7.33

130

16.13

234.3

-7.56

130

16.20

220.6

-7.25

140

16.27

231.5

-7.37

140

16.30

224.1

-7.22

150

16.39

229.6

-7.21

150

16.39

226.2

-7.17

160

16.50

228.4

-7.08

160

16.49

225.8

-7.06

170

16.60

227.7

-6.96

170

16.59

224.8

-6.94

180

16.69

227.3

-6.87

180

16.68

224.5

-6.84

190

16.78

227.1

-6.77

190

16.77

224.9

-6.76

200

16.87

226.9

-6.68

200

16.85

225.7

-6.70

210

16.95

226.7

-6.59

210

16.93

226.4

-6.63

220

17.04

226.5

-6.50

220

17.01

226.8

-6.56

230

17.13

226.2

-6.40

230

17.09

226.8

-6.48

240

17.21

225.9

-6.32

240

17.17

226.3

-6.39

250

17.29

225.6

-6.23

250

17.25

225.4

-6.29

260

17.39

225.4

-6.14

260

17.33

224.4

-6.19

270

17.45

225.1

-6.06

270

17.41

223.5

-6.10

280

17.53

224.8

-5.98

280

17.49

222.8

-6.00

290

17.60

224.7

-5.90

290

17.56

222.5

-5.93

300

17.66

224.5

-5.84

300

17.63

222.5

-5.86

310

17.72

224.4

-5.78

310

17.69

222.9

-5.80

320

17.77

224.3

-5.73

320

17.74

223.6

-5.77

330

17.82

224.3

-5.68

330

17.78

224.6

-5.75

340

17.85

224.3

-5.65

340

17.82

225.8

-5.73

350

17.89

224.4

-5.61

350

17.84

227.1

-5.73

360

17.91

224.5

-5.59

360

17.87

228.4

-5.73

370

17.93

224.7

-5.57

370

17.88

229.5

-5.74

380

17.95

224.9

-5.56

380

17.90

230.3

-5.73

390

17.96

225.2

-5.55

390

17.91

230.7

-5.73

400

17.96

225.5

-5.56

400

17.92

230.8

-5.72

*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

3.364

3.244

20.68

226.5

-2.87

5.5

Per DL6WU formula

3.720

3.560

20.85

230.0

-2.77

5.5

For max G/T

3.720

2.560

20.41

223.6

-3.09

5.5

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

14.80

22.11

24.43

17.25

36.0

37.4

226.6

-8.75

5.5

Vertical

14.80

20.05

14.81

22.88

37.2

35.8

227.9

-8.78

4.9

 

Horizontal polarisation patterns

 

Vertical polarisation patterns