Beam Iridium RST740 Installation Manual Download Page 2

1.  Bring the long RF cable to the top of 

the pole or mast.

2. 

Feed the cable though the 

mounting bracket and attach the 

TNC connector to the antenna.

3. 

Insert the Mounting Screws to 

fasten the mounting bracket to 

the antenna.

4. 

Place the mounting bracket over the 

pole and tighten the set screws.

1.  Attach the Type N connector from the long RF cable 

to the bias box.

2. 

Attach the short RF cable to the bias box and the 

docking station

3. 

Connect DC power (9 to 36 VDC, 30W) to bias box.

Inside/Below Deck

Outside/Above Deck

Type N

WARNING

0.55 METRES

antenna

Bias Box

PHONE ANT

9-36 VDC

-

+

Type N

WARNING

0.55 METRES

antenna

Bias Box

9-36 VDC

-

+

TNC

PHONE ANT

TNC

Any Iridium 

terminal/dock.

Type N

WARNING

0.55 METRES

antenna

Bias Box

TNC

TNC

Philmore

P602C

to AC/DC

adapter or

other DC

source

Any Iridium 

terminal/dock.

PHONE ANT

9-36 VDC

-

+

to antenna

TNC

long RF cable

Pole/mast

Type N

to bias box

WARNING

0.55 METRES

antenna

TNC

mounting 
bracket

pipe/ mast

Type N

to bias box

WARNING

0.55 METRES

antenna

mounting 

bracket

pipe/ mast

Type N

to bias box

Type N

to bias box

WARNING

0.55 METRES

antenna

WARNING: 

 

Do not place the antenna anywhere there is a 

source of heat or fumes such as the ship’s exhaust.

WARNING

Galvanic Corrosion Protection 

This antenna has a base and pipe adapter is constructed out of 

aluminum. When the antenna is mounted to a steel mast or metallic 

bracket, a galvanic reaction can occur resulting in aluminum 

corrosion. To minimize corrosion the following steps can be taken:
• 

apply self-fusing silicone tape to all connectors 

• 

use a UV-resistant, non metallic mast when possible 

• 

apply silicone grease or joint compound do all metallic 

surfaces that make contact with the antenna or mounting 

adapter

• 

if possible use an insulating plastic or rubber sleeve between a 

steel mast and the aluminum adapter. 

Antenna installation is critical for optimum performance of your Iridium service. 

Installation Guidelines 

To ensure maximum performance of the antenna system and to 

maximise availability and reliability of service the antenna must; 
•  have a clear line of site to the sky 

•  be clear and free of obstructions 

•  be clear of metal objects 

•  be located away from other transmitting devices 

•  be securely affixed in location

•  not be located indoors 

•  be installed in conjunction with a certified cable 

Installing Antenna Cables 

When installing antenna cables, follow these guidelines: 

•  Route and restrain cables to prevent them from vibrating or moving 

under normal conditions, which could result in damage to the 

antenna or the coaxial cable connections. 

•  Wherever the cables contact structures, protect the cables from 

chafing or abrasion. If a cable needs to be bent, avoid kinking it, and 

ensure that each bend radius follows the cable supplier limits. 

•  Use coaxial sealant, shrink-wrap tubing, electrical tape, or another 

suitable product to seal all cable connections appropriately to 

prevent moisture and corrosion damage from weather exposure. 

•  Mount all antennas vertically and clear of nearby metal obstructions

•  Minimize horizontal obstructions as much as possible because they 

can create areas of poor system coverage. 

Installation Options 

The antenna system is suitable for marine and fixed applications and 

is designed to meet Iridium System performance requirements when 

installed according to the instructions in this guide.

NOTE: 

This cable is not part of the antenna kit.

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