Confidential
RF4402d Series Installation Manual v1.0
113
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Appendix B
Sector Antenna
Installation
Cautions when Installing a Sector Antenna
Precautions of antenna installation are as follows.
Sector antennas should be installed vertically. (±1°)
Antenna is the precise material, so be careful not to make damage or form
change.
When moving antenna, use the tool suitable to rating. In addition, use the rated
carrying device which is at least 200 % or more than antenna considering the
stability.
Be careful not to give too much strength to the antenna.
If it rains, suspend connecting the feeder cable and antenna.
Fix it after adjusting the direction of antenna exactly.
Distance between steel tower and antenna and the distance between send-
receive antennas are based on the antenna layout.
Attach the antenna on the position specified in the drawing.
Install the antenna not to make a feature change of the antenna considering the
direction of the radiation
Connect the antenna not making the alien substance flowed so that Passive
Inter-Modulation Distortion (PMID) is not affected.
Measure VSWR of all antennas and the value should be within the regulated
value.
When you install the antenna, the antenna must be within the protective angle
(left/right side 45° each from the central axis) to prevent the antenna from
lightning damage.
Lightning Rod
45
°
45
°
Antenna
