Sea Tel 6012-71 C-BAND, Installation Manual

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6012-71 Installation Manual Installation
3-2
3.3. Installing the ADE
The antenna pedestal is shipped completely assembled in its radome. Please refer to the entire Site Survey chapter of
this manual.
Base Hatch Access
- Mounting the radome directly on the deck or
platform prevents access to the hatch in the base of the radome unless an
opening is designed into the mounting surface to allow such entry. If there is
no access to the hatch the only way to service the antenna is to remove the
radome top. Two people are required to take the top off of the radome
without cracking or losing control of it, but even with two people a gust of
wind may cause them to lose control and the radome top may be
catastrophically damaged (see repair information in the radome
specifications) or lost.
If access to the hatch cannot be provided in the mounting surface, provide a
short ADE mounting stanchion to mount the ADE on which is tall enough to
allow access into the radome via the hatch.
Ladder rungs must be provided on all mounting stanchions greater than 3-4
feet tall to allow footing for personnel safety when entering the hatch of the
radome.
Cable Passage - The radome base is designed with a bottom center cable
passage and Roxtec® Multidiameter® blocks for cable strain relief. The
recommended cable passage in the 50, 60, 61 and 66 inch radomes is through
the bottom center of the radome base, down through the ADE mounting
stanchion, through the deck and into the interior of the ship.
Bottom center cable passage is recommended, however, a strain relief kit is provided with the system if off-center
cable entry is required. Note: Strain relief installation procedure, provided in the Drawings chapter, MUST
be followed to assure that the cored holes are properly sealed to prevent moisture absorption and de-
lamination of the radome base.
3.3.1.
The antenna pedestal is shipped completely assembled in its 81” single piece radome.
Preparing and Installing the Single Piece 81” Radome Assembly
1. Remove the shipping hold-down bolts which mount the ADE to its’ pallet.
2. Install four lifting eye bolts, provided in the radome installation kit, in holes around the perimeter of
the baseframe.
3. Attach a four-part lifting sling to the four lifting eyes in the
base of the radome and lift the radome assembly free of
its shipping pallet. Place the radome assembly on
temporary support blocks at least 22 inches high.
4. Loosely assemble the radome base frame's eight legs and
eleven braces as shown in the Radome Base Frame
Assembly drawing using the hardware provided. Insure
that a split washer is used under each nut. When
assembled, apply Loctite and tighten all hardware.
5. Using the four-part lifting sling, and with a tag line
attached to the radome base frame, hoist the antenna
assembly to its assigned location aboard ship by means of
a suitably-sized crane or derrick.
6. The radome assembly should be positioned with the BOW
marker aligned as close as possible to the ship centerline.
Any variation from actual alignment can be compensated with the Home Flag Offset and AZIMUTH
TRIM adjustment, so precise alignment is not required.
7. Bolt or weld the legs of the radome base frame directly to the ship's deck or suitable mounting
surface. If the deck is uneven or not level, weld clips to the deck and attach them to the legs of the
radome base frame. When completed the radome should be as near to level as is practical.
8. Disconnect the lifting sling from the four lifting eyes in the base of the radome.
9. Remove the four lifting eye bolts. Save the lifting eye hardware in case lifting of the ADE is required
in the future.