Sailor SC4150, Installation Manual

14

Installation

IRIDIUM

Inmarsat equipment
The operating frequency bands of the iridium and Inmarsat systems are neighbours, and it is not in any way by
any technical solution possible to completely separate these bands. This means that interference from Inmarsat
can be expected, especially if the antennas are placed near each other. The distance between the antennas
Should be as far as possible.

If in any way the user experiences trouble using Iridium because of Inmarsat, a filter can be provided as an
option. This filter is placed in a suitable place between the antenna and the transceiver. The filter is a passive
type not requiring external power but the filter loss of 1.2 dB have to be added to the total cable loss between
the transceiver and the antenna. Please contact your dealer for further information.

The table below shows the distance to other Inmarsat equipment, with and without use of filter.

9505 ISU Protection Distance

Main Lobe 

(Metres)

Side Lobe 

(Metres)

Back-Lobe 

(Metres)

No Filter

14

4

4

Inmarsat (Mini-M)

No Filter

25

4

4

Inmarsat (Std-M)

No Filter

84

20

20

Inmarsat A

No Filter

70

16

16

Inmarsat B

No Filter

14

14

14

Inmarsat C

With Filter

1

1

1

Inmarsat (Mini-M)

With Filter

1

1

1

Inmarsat (Std-M)

With Filter

4

1

1

Inmarsat A

With Filter

4

1

1

Inmarsat B

With Filter

1

1

1

Inmarsat C

Antenne cable
Below, please find a table of cables that can be provided by your dealer:

CABLE

            CONNECTOR

Cable type

Part no.

Maximum 

length/ 3 dB 

loss

Outer 

diameter

Minimum 

bending 

radius

Conn. 

type

Part no. 

RG 214/U

E62.415

8 m

10.8 mm

54 mm

N

MALE E62.147

SUCOFEED 1/2" HF

77.518

19 m

13.4 mm

35 mm

N

MALE 79.002

SUCOFEED 1/2" 

77.519

30 m

16.0 mm

125 mm

N

MALE 79.001

SUCOFEED 7/8"

77.520

50 m

27.8 mm

220 mm

N

MALE 79.003  & 
FEMALE 79.004

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