ANTENNA Y21006XL4

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)

10

5565

14.69

20.95

22.46

17.46

35.6

38.8

229.1

-8.91

5.5

 

WORKING CONDITION:

Frequency for SWR=1,5 (MHz)

Z (Ώ)

at 144.100 MHz

SWR at 145.000 MHz

Lowest

Highest

137.700

146.000

199.6

1.02:1

 

DIMENSIONS:

 

Ref

De1

De2

D1

D2

D3

D4

D5

D6

D7

D8

Pos

0

285

392

522

912

1556

2272

3075

3892

4788

5565

Length

1018

1032

904

944

944

922

906

892

876

858

848

All elements made of Al tubes Ǿ6mm  -     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)

I0JXX 12

2.68

12.67

26.9

1.31:1

3.58

3.30

18.64

6.9

238.0

-2.97

Y21006XL4

2.72

12.54

199.6

1.02:1

3.68

3.38

18.57

5.5

232.9

-2.95

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

 

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

15.93

221.9

-7.52

110

 

 

 

110

16.06

218.5

-7.32

120

 

 

 

120

16.17

217.7

-7.20

130

15.95

242.9

-7.90

130

16.26

219.7

-7.15

140

 

 

 

140

 

 

 

150

16.25

237.2

-7.49

150

16.40

225.3

-7.12

160

 

 

 

160

 

 

 

170

16.46

233.5

-7.22

170

16.58

224.7

-6.93

180

 

 

 

180

 

 

 

190

16.65

231.1

-6.98

190

16.76

225.1

-6.76

200

 

 

 

200

 

 

 

210

16.83

229.3

-6.77

210

16.93

226.3

-6.61

220

 

 

 

220

 

 

 

230

16.99

227.9

-6.58

230

17.10

225.7

-6.43

240

 

 

 

240

 

 

 

250

17.16

226.8

-6.39

250

17.27

223.6

-6.22

260

 

 

 

260

17.36

222.7

-6.11

270

17.31

226.2

-6.23

270

17.44

222.2

-6.02

280

 

 

 

280

17.52

222.2

-5.94

290

17.45

226.0

-6.08

290

17.59

222.6

-5.88

300

 

 

 

300

17.65

223.4

-5.83

310

17.57

226.1

-5.96

310

17.71

224.6

-5.80

320

17.62

226.2

-5.92

320

17.75

226.1

-5.78

330

17.67

226.4

-5.87

330

17.79

227.7

-5.78

340

17.71

226.7

-5.84

340

17.82

229.5

-5.78

350

17.74

227.0

-5.81

350

17.84

231.3

-5.79

360

17.77

227.3

-5.79

360

 

 

 

370

17.79

227.6

-5.77

 

 

 

 

380

17.81

228.0

-5.76

 

 

 

 

390

17.82

228.3

-5.76

 

 

 

 

400

17.83

228.6

-5.75

 

 

 

 

*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

3403

3132

20.57

228.2

-3.02

Per DL6WU formula

3780

3280

20.71

231.1

-2.93

For max G/T

3780

1280

19.10

218.9

-4.30

For lowest temperature

 

STACKING DIAGRAMS FOR MAX G/T

 

 

STACKING DIAGRAMS FOR LOWEST TEMPERATURE