ANTENNA Y21105XL8

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)

11

6000

14.73

36.14

26.96

20.27

35.8

39.2

221.7

-8.73

6.3

 

WORKING CONDITION:

Frequency for SWR=1,5 (MHz)

Z (Ώ)

at 144.100 MHz

SWR at 145.000 MHz

Lowest

Highest

140.900

146.200

199.5

1.08:1

 

DIMENSIONS:

 

Ref

De1

De2

D1

D2

D3

D4

D5

D6

D7

D8

D9

Pos

0

130

318

422

752

1308

1968

2729

3539

4378

5272

6000

Length

1018

1032

858

959

956

934

917

899

883

865

849

831

All elements made of Al tubes Ǿ5mm  -     All dimensions given in milimetres   -   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)

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

Y21105XL8

2.88

12.58

199.5

1.08:1

3.84

3.42

18.63

6.3

227.0

-2.78

K1FO 13

2.89

12.94

24.7

1.38:1

3.64

3.39

18.88

4.6

239.2

-2.76

Y21110XL2

2.94

12.98

200.6

1.08:1

3.84

3.52

19.01

4.0

226.4

-2.39

M2 20 XPOL

2.97

13.11

200.1

1.20:1

3.64

3.64

19.09

6.3

241.7

-2.59

G0KSC 11 LFA

2.98

13.11

48.3

1.06:1

3.78

3.65

19.14

3.0

224.9

-2.23

UA9TC 11RS

2.98

13.09

50.9

1.10:1

3.66

3.37

19.01

5.0

223.0

-2.34

G0KSC 11OWL

3.00

13.16

49.8

1.42:1

3.69

3.44

19.09

7.7

224.6

-2.27

BVO-3WL

3.01

13.43

52.7

3.08:1

3.90

3.70

19.38

8.6

253.1

-2.50

G0KSC 11LFA3R

3.01

13.00

50.1

1.08:1

3.60

3.33

18.92

4.0

223.0

-2.41

YU7EF 11

3.04

13.07

49.0

1.62:1

3.56

3.30

18.87

4.7

222.6

-2.46

F9FT 16

3.06

12.64

20.8

1.37:1

3.54

3.26

18.63

6.0

241.3

-3.05

Z(ohms) - measured on 144.100 MHz

Bandwidth – VSWR measured on 145.000 MHz

 

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

16.06

214.7

-7.23

110

 

 

 

110

16.19

212.3

-7.06

120

 

 

 

120

16.30

211.7

-6.93

130

16.10

229.9

-7.50

130

16.39

212.9

-6.87

140

 

 

 

140

 

 

 

150

16.39

223.7

-7.09

150

16.55

216.3

-6.78

160

 

 

 

160

 

 

 

170

16.60

221.1

-6.82

170

16.73

215.6

-6.58

180

 

 

 

180

 

 

 

190

16.78

220.1

-6.62

190

16.90

215.5

-6.41

200

 

 

 

200

 

 

 

210

16.95

210.7

-6.45

210

17.06

215.8

-6.26

220

 

 

 

220

 

 

 

230

17.11

219.5

-6.28

230

17.22

215.7

-6.09

240

 

 

 

240

 

 

 

250

17.26

219.4

-6.13

250

17.38

214.9

-5.92

260

 

 

 

260

17.45

214.7

-5.85

270

17.41

219.4

-5.98

270

17.53

214.8

-5.77

280

17.54

219.3

-5.85

280

17.60

215.2

-5.71

290

17.54

219.3

-5.85

290

17.67

216.0

-5.65

300

17.66

219.3

-5.73

300

17.73

217.0

-5.61

310

17.66

219.3

-5.73

310

17.78

218.3

-5.59

320

17.76

219.4

-5.63

320

17.82

219.8

-5.58

330

17.76

219.4

-5.63

330

17.86

221.4

-5.57

340

17.83

219.6

-5.57

340

17.89

223.1

-5.58

350

17.85

219.8

-5.55

350

17.91

224.9

-5.59

360

17.88

220.1

-5.52

360

 

 

 

370

17.89

220.3

-5.52

 

 

 

 

380

17.91

220.6

-5.50

 

 

 

 

 

17.92

220.8

-5.50

 

 

 

 

 

17.92

221.1

-5.50

 

 

 

 

 

17.93

221.3

-5.50

 

 

 

 

*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.

 

BEST DISTANCES FOR 4 ANTENNAS IN H-STACK

Horizontal

distance (cm)

Vertical distance (cm)

G

(dBi)

TA

(K)

G/T

(dB)

Remark

3384

3101

20.57

220.7

-2.90

Per DL6WU formula

3940

3420

20.79

226.9

-2.77

For max G/T

3840

1280

19.19

213.1

-4.10

For lowest temperature I

3840

2680

20.42

216.2

-2.93

For lowest temperature II

 

STACKING DIAGRAMS FOR MAX G/T

STACKING DIAGRAMS FOR LOWEST TEMPERATURE I

 

 

STACKING DIAGRAMS FOR LOWEST TEMPERATURE II