Site preparation
98-148248-C
Chapter 3: Installation
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Install
ation
3.2 Site preparation
The following topics have to be considered when installing the ADU:
•
•
•
Blocking zones with azimuth and elevation
•
Safe access to the ADU (radiation hazard)
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Ship motion and offset from the ship’s motion centre
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ADU mast design: Mast foundation and height
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Interference from radar, GPS, L-band 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 600 VSAT Ka 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 600 VSAT Ka system, the azimuth calibration provides the correct azimuth of
the ADU.
3.2.1.1 Painting the radome
Customers may wish to paint the radome in order to match the vessel’s colour. Any paint
used must be non-metallic based. Painting the radome may impact RF performance and
may lead to over-heating, causing the antenna to go in safe mode (switch off).
Cobham SATCOM recommends that the radome should NOT be painted. Painting the
radome will not void the general warranty regarding material and workmanship etc. It is
only the performance that cannot be guaranteed.
3.2.1.2 Modifying the radome or using another radome
The SAILOR 600 VSAT Ka antenna comes with a type-approved radome fitted from the
factory. This radome is specifically designed for a minimal loss of RF performance for this
specific antenna. Insertion loss reduces the available signal and decreases the effective
radiated power and G/T (the ability to receive a weak signal). Modifying the radome or using
another radome may increase the antenna side lobes, resulting in interference with other
communication systems and thereby void satellite operator approvals. Other electrical
effects on antenna performance of another radome, or of modifying the radome, include a
change in the antenna beam width and shifting of the antenna bore sight.
Important
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.
Summary of Contents for SAILOR 60 GX
Page 1: ...Cobham Public SAILOR 600 VSAT Ka SAILOR 600 VSAT Ka High Power Installation manual...
Page 116: ...Software update 8 12 Chapter 8 Service 98 148248 C Figure 8 11 Verifying software update...
Page 181: ...Telenor antenna approval G 4 Appendix G Approvals 98 148248 C...
Page 192: ...98 148248 C www cobham com satcom Cobham Public...
