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5.2.2 How to install Antenna
1. Take a caution when antenna is installed on High Speed Vessel
Generally the head of High Speed Vessel will be up float when ship is in full speed.
Due to
this, in case the Antenna being installed in even level and trim (angle of ship’s stem
while running) being over 1/2 of vertical beam width (θ), the Echo from this target is
hardly displayed as image because the front of the ship is off the beam range that
causes the electric wave reflecting from the target becomes weak. In opposition, at
the stern of the ship the wave reflecting from the sea surface becomes strong. It will
not affect the image at the port and starboard side of the ship.
Therefore, in case the ship that of trim is over 1/2 of vertical beam width (θ), it is
recommended to install the Antenna in slant toward the ship’s stem.
2. Caution while the Antenna is installed in Yaucht
It is apt to be sliding in slant toward the counter windy side while the yaucht is
navigating when the wind is blowing to the extent. In case the slanted angle being
over 1/2 of beam width, the electric wave reflecting from the target becomes weak
since the ship structure is off the range of beam and Echo from this target is hardly
displayed as an image. In opposiiton, the opposite side of the wind, surface
reflecting becomes strong since the electric wave contacting sea surface becomes
strong. It will hardly affect the images of fore and after side of ship.
Therefore, in case Yaucht that of slant is over 1/2 of vertical beam width (θ), it is
recommended to install the mounting bracket in order that antenna can be slanted in
right and left side according to the angle of slant.
Summary of Contents for SMR-3700
Page 14: ...14 Display Menu Communication Menu System Menu Initial Display...
Page 51: ...51 Scanner Unit RSU 3700...
Page 52: ...52 Display Unit SMR 3700...
Page 55: ...55...