JRC NTG-420 Installation Manual page 5

Solid state transmitter-receiver
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• If it is considered that sufficient installation height cannot be provided when
the antenna is installed directly on the roof of the building, use a mounting
rack or radar mast (Fig.1-3).
height is less than 2 meters from the roof of the building, provide a
mounting rack assembled at an angle frame to install the antenna. When
the antenna installation height is 2 meters or higher from the roof of the
building, provide a cylindrical radar mast to install the antenna. Consider
the convenience of the service staff who take care of installation,
maintenance, adjustment, and repair of the antenna by providing adequate
footholds to the mounting rack and the radar mast.
Installation
Fig.1-3 Mounting rack and mast for the antenna
• When installing the antenna, select a location where there are the fewest
structural objects in the surrounding area so that false images which
interfere with target detection will not be generated by signal reflection from
other antennas, equipments, and cargos.
structural objects should not exist within the range of the vertical beam
width (Fig.1-4).
Vertical beam width of X-band Radar Antenna: Approx. 20° (±10.0° when
the height of the radiating section is 0°).
ビーム幅
Beam width
Fig.1-4 Antenna and the surrounding structural objects
Normally, when the antenna installation
Installation
Only as a guide, note that
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