Site considerations
98-175666-D Chapter 2: Installation 2-3
2.2 Site considerations
Consider the following topics when installing the ADU:
• General 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 flange and mast length
• Interference from radar, GPS/GNSS, L-band and other transmitters
• Condensation and water intrusion
2.2.1 General considerations
For optimum system performance, follow the guidelines on where to install or mount
the different units of the SAILOR XTR GX-R2 system. You do not have to align the ADU
with the bow-to-stern line of the ship. When configuring the SAILOR XTR GX-R2 system,
the azimuth calibration provides the correct azimuth of the ADU.
Mount the ADU on stiffened structures with a minimum of exposure to vibrations.
Safe access to the ADU: Radiation hazard
The radiation and safety distances are:
Painting the radome
Customers may wish to paint the radome in order to match the vessel’s color. 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.
Antenna model
Maximum
EIRP level
Safety
distance
407509C-00541 SAILOR 1000 XTR GX-R2 4.5W ADU 54.1 dBW 30 m
407509D-00541 SAILOR 1000 XTR GX-R2 9.0 W ADU 57.1 dBW 55 m
407506A-00543 SAILOR 600 XTR GX-R2 4.5W ADU 50.5 dBW 30 m
407506D-00542 SAILOR 600 XTR GX-R2 9.0W ADU 53.5 dBW 44 m
Table 2-1: Radiation and safety distance
Note
The safety distance is based on a radiation level of 10 W/m².
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