v130G – Marine Satellite Communication System
18
Planning the Installation
Selection of Antenna Installation Site
Install the antenna in accordance with the following procedures to ensure maximum
performance of the antenna. The ideal antenna site has a clear view of the horizon
or satellite will all around clearance. Please be sure there are no obstacles within
15º above the center of the antenna. Obstacles can prevent the antenna from
transmitting and receiving the satellite signal.
Do not install the antenna near the radar, especially on the same plane as the
microwave radar transmissions as these will overload the antenna front-end circuits.
It is recommended to position the antenna at least 4 feet (1.2 m) above or below the
level of the radar and minimum of 15 feet (4.6 m) away from any high power short
wave radars.
The mounting platform should be robust enough and not subject to vibration.
The movement of the antenna can be minimized by installing at the center of the
vessel. If these conditions can be only partially satisfied, find the best compromised
installation site.
Elevation Limit
of Obstacles
15°
Antenna Unit
Obstacle
