ANTENNA Y21205XL5

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)

12

7265

15.36

28.91

24.94

19.31

33.4

36.4

218.0

-8.02

6.6

 

WORKING CONDITION:

Frequency for SWR=1,5 (MHz)

Z (Ώ)

at 144.100 MHz

SWR at 145.000 MHz

Lowest

Highest

140.200

146.200

198.5

1.07:1

 

DIMENSIONS:

 

Ref

De1

De2

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

Pos

0

205

410

524

858

1448

2168

2949

3809

4664

5614

6495

7265

Length

1018

1018

800

964

955

930

909

895

883

861

853

849

837

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)

DK7ZB 11

3.40

13.68

27.9

1.27:1

3.94

3.71

19.61

5.0

234.3

-1.94

UA9TC 12RS

3.40

13.55

51.7

1.09:1

3.80

3.56

19.46

5.1

218.2

-1.78

G0KSC 12LFA

3.41

13.64

50.1

1.18:1

3.90

3.70

19.58

4.3

221.2

-1.72

MBI 3.4

3.42

13.58

37.7

1.62:1

3.87

3.62

19.49

9.2

227.7

-1.93

G0KSC 12LFA 2R

3.43

13.46

50.3

1.06:1

3.95

3.75

19.48

4.9

220.5

-1.80

InnoV 12 LFA

3.43

13.56

49.3

1.07:1

3.80

3.60

19.47

5.4

218.9

-1.78

Gulf Alpha 14

3.44

13.24

198.0

1.21:1

3.71

3.44

19.14

5.5

229.6

-2.32

Gulf Alpha 114 XPOL

3.44

13.25

200.5

1.21:1

3.57

3.57

19.14

5.5

231.8

-2.37

YU7EF 12

3.49

13.67

45.4

1.77:1

3.85

3.60

19.55

6.1

221.1

-1.75

Y21205XL5

3.49

13.21

198.5

1.07:1

4.14

3.74

19.32

6.6

221.7

-1.98

SM5BSZ 11

3.51

13.95

54.4

3.06:1

4.05

3.80

19.81

6.3

238.8

-1.82

SM5BSZ 11A

3.53

14.01

52.3

3.03:1

4.13

3.92

19.93

6.1

245.4

-1.82

17LQD EKM#1

3.59

13.30

50.0

1.23:1

3.75

3.52

19.21

4.2

242.1

-2.48

17LQD EKM#2

3.59

13.39

50.0

1.25:1

3.75

3.50

19.32

4.5

227.5

-2.10

DL6WU 14

3.61

13.63

51.4

1.28:1

3.94

3.70

19.53

2.6

246.9

-2.24

DJ9BV 3.6

3.61

13.67

53.5

1.30:1

4.00

3.78

19.57

5.4

249.7

-2.25

K1FO 15

3.64

13.76

39.1

1.30:1

3.94

3.71

19.67

4.8

233.0

-1.85

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

16.77

215.1

-6.54

110

 

 

 

110

16.88

212.4

-6.37

120

 

 

 

120

16.97

211.6

-6.27

130

16.83

228.4

-6.74

130

17.04

212.6

-6.22

140

 

 

 

140

 

 

 

150

17.06

222.9

-6.41

150

17.17

215.3

-6.14

160

 

 

 

160

 

 

 

170

17.22

220.4

-6.20

170

17.31

214.6

-5.99

180

 

 

 

180

 

 

 

190

17.36

219.6

-6.04

190

17.44

215.8

-5.88

200

 

 

 

200

 

 

 

210

17.49

219.4

-5.91

210

17.56

217.7

-5.80

220

 

 

 

220

 

 

 

230

17.62

219.1

-5.77

230

17.67

219.4

-5.73

240

 

 

 

240

 

 

 

250

17.74

218.6

-5.64

250

17.80

219.8

-5.60

260

 

 

 

260

 

 

 

270

17.87

217.7

-5.49

270

17.93

218.6

-5.45

280

 

 

 

280

 

 

 

290

18.00

216.7

-5.34

290

18.08

216.9

-5.27

300

 

 

 

300

 

 

 

310

18.13

215.8

-5.19

310

18.22

215.7

-5.10

320

 

 

 

320

18.28

215.4

-5.04

330

18.24

215.1

-5.07

330

18.33

215.4

-4.99

340

18.29

214.9

-5.02

340

18.38

215.6

-4.94

350

18.34

214.7

-4.96

350

18.43

216.1

-4.90

360

18.38

214.7

-4.92

360

18.46

216.7

-4.88

370

18.41

214.8

-4.89

370

18.49

217.3

-4.87

380

18.45

215.0

-4.86

380

18.52

217.8

-4.84

390

18.47

215.2

-4.84

390

18.54

218.1

-4.83

400

18.49

215.5

-4.83

400

18.56

218.4

-4.82

410

18.51

215.8

-4.81

410

18.57

218.6

-4.81

420

18.53

216.1

-4.80

420

18.58

218.7

-4.80

430

18.54

216.4

-4.80

430

18.59

218.7

-4.79

440

18.55

216.6

-4.79

440

18.59

218.6

-4.79

450

18.55

216.9

-4.80

450

18.53

218.3

-4.78

*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

3599

3313

20.99

227.3

-2.57

Per DL6WU formula

4380

4540

21.47

221.7

-1.98

For max G/T

3680

1280

19.59

212.1

-3.67

For lowest temperature I

3680

3380

21.18

218.0

-2.20

For lowest temperature II

 

STACKING DIAGRAMS FOR MAX G/T

STACKING DIAGRAMS FOR LOWEST TEMPERATURE I

 

 

STACKING DIAGRAMS FOR LOWEST TEMPERATURE II