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4.2. Antenna Unit
4.2.1. Divide the unit
ATU can be divided into 3 parts as shown below.
Upper part of radome
1) Put Antenna Unit on a workbench
Loosen the 12, M10 bolts around the radome and
remove the radome top. M10 will remains on the
radome bottom.
Do not lift up the radome top carelessly, because
flange inside radome top may hit the tip part of the
antenna which is very fragile. Once lift up the
radome top high enough to check the position of
antenna and rotate the antenna elevation upward
by holding the counter weight arm by hand if it is
facing horizontally.
Use some pillows or lumber under the bottom edge
of the radome top that will make easier to put hands
under radome when lifting up. Do not place directly
on the floor or it will be hard to lift up without space
under the radome.
Antenna
Internal unit
Caution:
Move antenna to position
feed arm vertically to
ensure no contact when
lifting radome top.
Pillow or lumbers
21
[mm]
Bottom part of radome
Workbench
Floor
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