Site preparation
98-150471-A02 Chapter 3: Installation 3-3
3.2 Site preparation
The following topics have to be considered when installing the ADU:
• General site considerations
• Obstructions (ADU shadowing)
• Blocking zones – azimuth and elevation
• Safe access to the ADU: Radiation hazard
• Ship motion and offset from the ship’s motion centre
• ADU mast design: Foundation and height
• Interference
• Other precautions
3.2.1 General site considerations
For optimum system performance, some guidelines on where to install or mount the
different components of the SAILOR 900 VSAT High Power System must be followed.
It is recommended to mount the ADU in a location with as much 360° free line of sight
to the satellite as possible while making sure that the support structure fulfills the
requirements for the mast foundation. The ADU must be mounted on stiffened structures
with a minimum of exposure to vibrations.
Painting the radome
Customers may wish to paint the radome in order to match the vessel’s colour. Cobham
SATCOM’s recommendation is that the radome should NOT be painted because it may
impact RF performance and may lead to over-heating, causing the antenna to go in safe
mode (switch off).
However, painting the radome will not void the general warranty regarding material and
workmanship etc. It is only the performance that cannot be guaranteed. Any paint used
must be non-metallic based.
SAILOR900HP.book Page 3 Monday, July 18, 2016 12:44 PM
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