Page 2-2
CL-HD Antenna Technical Instruction Manual
Issue 3.0
Section 1 General information
2.4 ANTENNA ASSEMBLY
Figures 2-2 through 2-7 depict the
assembly of the antenna and should be
used in conjunction with the following
instructions.
(a) Carefully unpack the antenna
components. All parts are identified
with item numbers which will be
referenced throughout the assembly
instructions. See section 3 for a
complete list of parts.
(b) Assemble all the Horizontal Antenna
Support Pipes (item 7) to (2 ea)
Corner Brackets (item 8) with (2 ea)
M10 x 75 mm long bolts, (4 ea) M10
plain washers and (2 ea) M10 torque
nuts (items 17, 18, 19). See Figure
2-2.
(c) If the antenna support brackets are to
be attached to a channel or ‘I’ beam
safety net, continue to step (d). If the
antenna support brackets are to be
attached to a pipe style safety net
(using the optional stainless steel
band clamps), proceed to step (e).
(d)
Channel or ‘I’ Beam Support:
Attach two (2) Antenna Support
Brackets (item 3) to one of the
partially assembled Horizontal
Support Pipes from step (b) as shown
in Figure 2-2, Method 1 with two (2)
M10 x 75 mm long bolts, four (4) M10
plain washers and two (2) M10 torque
nuts (items 17, 18, 19). Leave these
bolts hand tight only. Using this
assembly as a template, position the
assembly over each Safety Net
Support such that the Corner
Brackets (item 8) clear the end (see
Figure 2-2) and mark the position of
the mount holes in the support
channel or ‘I’ beam. Drill the
mounting holes (4 per) with a 7/16”
(11 mm) drill bit. Bolt all the Antenna
Support Brackets (item 3) in place
including those used as the template
using the M10 x 40 mm long bolts (4
per), plain washers (8 per) and torque
nuts (4 per) (items 18,19,22). Orient
as shown in Figure 2-2. Proceed to
step (f).
(e)
Pipe Style Support:
Remove the ‘V’
brackets and screws from the
Optional Band Clamp Kit (item 26).
Attach the ‘V’ brackets to the Antenna
Support Brackets (item 3) with the
screws, nuts and star washers
provided (see Figure 2-2, Method 2).
Attach these modified Antenna
Support Brackets as shown in Figure
2-2 to all the partially assembled
Horizontal Antenna Support Pipes
from step (b) with M10 x 75 mm long
bolts (2) , M10 plain washers (4) and
M10 torque nuts(2), (items 17, 18,
19). Leave these bolts hand tight
only. Orient as shown in Figure 2-2.
(f) For each Helideck Antenna Support,
connect one (1) Helideck Vertical
Antenna Support Pipe (item 4) to one
(1) Kee Klamp, Modified (item 5) as
in Figure 2-3. The start and end
support pipes will also need a Guy
wire bracket (item 23) connected.
(g) Attach one (1) insulator (item 11) to
each of the Kee Klamp, Modified
(item 5) as in Figure 2-3. Connect a
bonding lead (item 6) between each
Vertical Antenna Support Pipe (item
4) and insulator (item 11) using hose
clamps (items 20 and 21).
(h) Connect each Helideck Antenna
Vertical Support Pipe (item 4) to the
corner brackets of the Helideck
Antenna Horizontal Support Pipes
(item 7) assembled in steps (b)
through (e). Use M10 x 75 mm long
bolts (2), M10 plain washers (4) and
M10 torque nuts (2), (items 17, 18,
19). See Figures 2-2 and 2-4.
NOTE
Perform either step (i) or (j), depending on
the type of safety net support.