21
INSTALLING THE ANTENNA
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 should have a clear view of the
horizon or satellite with 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 satised, nd the best compromised
installation sit.
Elevation Limit
of Obstacles
Antenna Unit Obstacle
15°
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