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Installing the antenna
assembly onto
the mast pipe
NOTICE
You must assemble the collar exactly as described above and as
shown in Figure 25 before fully assembling the collar. Failure to
do so will result in damage to the polarizer waveguide.
5. Insert two Allen screws into the collar and tighten to secure
the feed horn in place.
6. At this point, fully tighten any hardware that is not
tight—however, leave nuts that are used for pointing
adjustments slightly loose or just snug.
Follow these steps to mount the antenna assembly onto the mast:
1. Before you install the antenna assembly onto the mast pipe,
use a bubble level to make sure that the mast is plumb.
Check the mast at two perpendicular locations, as shown in
Figure 26.
Note: It is critical that the antenna mast is plumb. It is
impossible to adjust the antenna to correct for a mast that is
not plumb.
Bubble must be centered
between marks.
Bubble
level
Figure 26: Making sure the mast is plumb
Chapter 3 • Installing the antenna and radio assembly
Mast
Side view
To make sure the mast is
plumb, check with the level
in two positions at right
angles to each other.
Level
Mast
2nd level
position
Top view
T0144012
1037750-0001 Revision A
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