|
2.
Place the base plate so the center holes align with the
center-line of the rafter or stud (see diagram below).
While holding the base plate in place, use a pencil to
mark the location of the top center hole onto the mounting
surface. This mark in-dicates where you will be drilling
later.
3.
Using a carpenters level, plumb the antenna mast in at
least two different locations on the side of the mast, as
shown below. These two measurements should be at right
angles to each other.
If
the mast is plumb (aligned vertically with the bubble
level), go to step 5. Otherwise, loosen the adjustment
nuts (see diagram below).
4.
Rotate the mast until it is plumb with the level, then use
a torque wrench to tighten adjustment nuts to 15 ft-lbs.
If you are still unable to align the mast with the level,
try using wooden shims. If they do not correct the
problem, you will need to find another site to install the
antenna.
5.
Set the mast aside and drill a 3 /16-inch X 3-inch pilot
hole where you made the pencil mark.
6.
Install the mast onto the mounting surface using a 3-inch
X 3 /8-inch lag bolt (see diagram at upper right).Tighten
the screw enough to secure the base plate, but leave it
loose enough to enable you to adjust the base plate.
|
|
7.
Verify that the mast is still plumb and adjust if
necessary.
8.
Mark the locations of the outside holes and remaining
center hole on the mounting surface.
9.
Remove the base plate from the mounting surface.
10.
Drill a 3 /16-inch X 3-inch pilot hole for the lower
center hole.
11.
Drill four 3 /16-inch X 2-inch pilot holes for the outside
holes.
12.
While holding the base plate in place, apply silicone
sealant onto the six pilot holes and around the bottom
edge of the base where it contacts the mounting surface
(see diagram below). Doing so will keep water from seeping
into your house.
13.
Install four 2-inch x 3 /8-inch lag bolts and four 3
/8-inch wash-4. ers into the outside holes on the base
plate.
14.
Install two 3-inch x 3 /8-inch lag bolts into the center
holes on the base plate.
15.
Tighten all bolts.
16.
Apply additional silicone sealant to cover the tops of the
lag bolts.
|
