790718 datasheet(32/152 Pages) KATHREIN

32 / 152 page

FM Transmitting Antenna

Polarization

87.5–108 MHz

•An economic FM-transmitting antenna system can be built by stacking

2 or more vertical dipoles (page 44) in front of a tubular mast (∅ 60–120 mm).

•Such antenna systems provide signal coverage in all azimuth directions

as shown in the horizontal radiation pattern below.

* Attenuation of the internal cabling and the gain-decrease in case of null fill in

the vertical radiation pattern are not considered.

Approximate values for gain decrease:

cable attenuation: 0.2 – 0.5 dB

null fill:

0.3 – 1.0 dB

Gain figures are valid for the direction of maximum radiation (see diagrams on

following page).

Input

Connectors according to IEC, EIA or DIN.

Max. power

According to customer’s requirements.

Frequency

87.5 – 108 MHz

VSWR, typically

< 1.3 throughout the whole frequency range.

Lower VSWR for parts of band upon request.

Impedance

50 Ω

Polarization

Vertical

Internal connections

Connectors according to IEC, EIA or DIN

are used throughout the system,

allowing easy assembly and maintenance.

Vertical radiation pattern

Null fill and beam tilt upon request.

Horizontal radiation pattern

Omnidirectional, wih preferred direction.

Half antenna splitting

Upon request, the antenna can be divided

into two halves (for emergency operation and

maintenance).

The two halves are connected by a

2-way power splitter or patch panel.

Pressurization

Splitters and connecting cables can be supplied

with dry air (please specify when ordering).

Grounding

Via mounting parts.

Max. wind velocity

240 km/h

No.

bays

Gain*

(at mid-band)

dBd

times

Weight

(without mounting

hardware) kg

Antenna

height H

Windload

(v = 160 km/h)

frontal N lateral N

5.0

3.2

3.48

230

440

8.0

6.3

7.68

460

880

9.7

9.3

120

11.88

690

1320

11.0

12.6

180

16.08

920

1760

11.8

15.1

220

20.28

1150

2200

12.7

18.6

270

24.48

1380

2640

14.0

25.1

350

32.88

1840

3520

790718 数据表(PDF) 32 Page - KATHREIN Solutions GmbH

790718 数据表(HTML) 32 Page - KATHREIN Solutions GmbH

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

数据表下载