ANTENNA X21606XL2Q

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)

16

3605

14.90

25.46

25.50

17.19

38.4

30.2

227.4

-8.73

5.4

 

WORKING CONDITION:

Frequency for SWR=1.5 (MHz)

Z (Ώ)

at 144.100 MHz

SWR at 145.000 MHz

Lowest

Highest

Bandwidth

141.000

146.800

5.800

               198.1

1.07:1

 

DIMENSIONS:

 

Ref

De

D1

D2

D3

D4

D5

D6

D7

Dimensions given in milimetres

Diameter of elements 6 milimetres

No boom correction included.

 

Pos

0

245

398

772

1204

1684

2336

3024

3605

Length

1016

788

931

931

941

928

916

912

900

Height

0

240

230

385

520

615

695

705

695

 

CONSTRUCTION OF RADIATOR

H = 788

V = 240

= 6 mm

 

 

COMPARISON (inserted in a part of VE7BQH table, where it belongs according to its boom length)

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)

X21606XL3Q

1.70

12.66

198.1

1.07:1

3.90

4.00

18.72

5.4

223.2

-2.61

G0KSC 8LFA

1.79

11.06

50.0

1.24:1

3.15

2.40

16.95

3.6

222.2

-4.37

W1JR 8 MOD

1.80

11.14

50.0

1.14:1

3.07

2.75

16.99

5.3

256.7

-4.95

DJ9BV 1.8

1.80

11.34

77.5

1.34:1

3.16

2.80

17.28

5.5

261.2

-4.74

K1FO 10

1.84

11.34

29.4

1.44:1

3.10

2.78

17.27

4.3

257.7

-4.69

Vine 8 FD

1.85

11.18

51.4

1.12:1

3.00

2.63

17.06

8.5

232.3

-4.45

YU7EF 8

1.87

11.31

48.5

1.21:1

3.04

2.71

17.23

3.8

242.1

-4.46

BQH8B

1.88

11.60

50.0

1.29:1

3.28

2.97

17.62

7.2

259.3

-4.37

UR5EAZ 9

1.89

11.32

49.2

1.01:1

3.07

2.75

17.26

3.6

249.7

-4.56

G4CQM 8

1.91

11.52

49.5

1.11:1

3.15

2.83

17.45

5.1

248.5

-4.35

KF2YN Boxkite9

1.92

13.98

49.2

1.28:2

4.45

3.70

19.95

5.6

228.6

-1.48

CT1FFU 8

1.94

11.28

27.1

1.05:1

2.96

2.62

17.10

2.9

232.3

-4.41

G0KSC 8OWL

1.95

11.63

48.9

1.26:1

3.13

2.82

17.55

4.6

235.7

-4.02

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

 

 

 

110

 

 

 

110

 

 

 

120

 

 

 

120

 

 

 

130

 

 

 

130

 

 

 

140

16.18

220.6

-7.30

140

 

 

 

150

16.35

220.5

-7.13

150

 

 

 

160

16.50

221.0

-6.99

160

 

 

 

170

 

 

 

170

 

 

 

180

 

 

 

180

 

 

 

190

 

 

 

190

 

 

 

200

16.94

226.4

-6.65

200

15.87

271.0

-8.47

210

 

 

 

210

 

 

 

220

 

 

 

220

 

 

 

230

 

 

 

230

 

 

 

240

 

 

 

240

 

 

 

250

17.30

230.7

-6.37

250

16.88

226.7

-6.71

260

 

 

 

260

16.98

225.5

-6.59

270

 

 

 

270

17.07

225.5

-6.50

280

 

 

 

280

17.13

227.0

-6.47

290

 

 

 

290

17.18

229.8

-6.47

300

17.57

227.8

-6.04

300

 

 

 

310

 

 

 

310

 

 

 

320

17.65

225.9

-5.93

320

 

 

 

330

17.68

225.0

-5.88

330

 

 

 

340

17.71

224.2

-5.84

340

17.46

231.0

-6.21

350

17.73

223.6

-5.81

350

17.54

228.2

-6.08

360

17.75

223.1

-5.78

360

17.60

225.7

-5.98

370

17.77

222.8

-5.75

370

17.66

224.0

-5.88

380

17.78

222.8

-5.74

380

17.71

223.2

-5.82

390

17.79

222.9

-5.73

390

17.74

223.1

-5.79

400

17.79

223.3

-5.74

400

17.77

223.6

-5.77

 

 

1`

 

410

17.78

224.5

-5.77

*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.

*Yellow coloured good distances

 

 

BEST DISTANCES FOR STACK

 

Four antennas in H-stack

Horizontal

distance (mm)

Vertical distance (mm)

G

(dBi)

TA

(K)

G/T

(dB)

Tlos

(K)

Remark

3132

3967

20.72

227.4

-2.84

5.4

Per DL6WU formula

3900

4000

20.87

223.2

-2.61

5.4

For max G/T

1580

3900

19.51

219.3

-3.90

5.4

For lowest temperature

 

 

 

 

Eight antennas in stack (four in horizontal and two in vertical plane)

Horizontal

distance (mm)

Vertical distance (mm)

G

(dBi)

TA

(K)

G/T

(dB)

Tlos

(K)

3900

4000

23.90

222.5

+0.43

5.4

 

Eight antennas in stack (two in horizontal and four in vertical plane)

Horizontal

distance (mm)

Vertical distance (mm)

G

(dBi)

TA

(K)

G/T

(dB)

Tlos

(K)

3900

4000

23.89

224.6

+0.38

5.4

 

 

 

Sixteen antennas (four in horizontal and four antennas in vertical plane)

Horizontal

distance (mm)

Vertical distance (mm)

G

(dBi)

TA

(K)

G/T

(dB)

Tlos

(K)

3900

4000

26.91

225.1

+3.39

5.4