Site preparation
99-145912-A 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 with azimuth and elevation
• Safe access to the ADU (radiation hazard)
• Ship motion and offset from the ship’s motion centre
• Mast foundation and height
• Interference from radar, GPS and other transmitters
• Condensation, water intrusion and deposits
3.2.1 General site considerations
For optimum system performance, you must follow some guidelines on
where to install or mount the different components of the SAILOR 100
GX System.
1. Mount the ADU on stiffened structures with a minimum of exposure
to vibrations.
You do not have to align the ADU with the bow-to-stern line of the ship.
When configuring the SAILOR 100 GX system, the azimuth calibration
provides the correct azimuth of the ADU.
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.
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.
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