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This
section describes routing and installing the coaxial cable
between the low-noise block (LNB) and the grounding block
(see diagram below). Depending on the routing of the
coaxial cable, you may choose to use a cable that can be
buried. When normal coaxial cable is buried, its outer
cover decays in the soil, and the cables life is
shortened. Cables that are suitable for burial use a
special outer cover that resists breakdown. Some of these
cables also have a special coating on their ground
shields. This coating resists corrosion if water gets into
the cable. Anytime the coaxial cable is buried, use cable
that is suitable for burial. Doing so will help prevent
problems in the future.
An
important goal of your cable installation is to protect
the cable from physical damage and moisture penetration.
To protect the cable from physical damage, secure it to
walls or other stable surfaces with cable clips. This
prevents the cable from sagging and being damaged by
people stepping on it or running over it with yard
equipment. Prevent moisture penetration by using
weather-proof connectors, or by sealing any connection
that is exposed to the elements. Drip loops provide a
connection with additional protection by preventing
moisture from traveling down the cable and entering the
connection, as shown at right.
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1.
Select the location where you will install the ground
block. Choose a site that will be near to the cable entry
point into the building. Also, plan a short and straight
path for the ground wire to the grounding rod.
WARNING
To
avoid injury, verify before you drill that there are no
electrical wires or pipes near where you will be drilling.
2.
Select a length of cable that can be routed easily from
the LNB to the ground block.
3.
Secure the grounding block to a stable mounting surface
with two screws, then connect the coaxial cable to the
grounding block (see diagram below).
4.
Secure the cable with cable clips. Do not forget to form
the drip loop and secure it with cable clips.
5.
Install the #8 ground wire on the ground terminal of the
ground block.
6.
Route the ground wire to the ground rod.
7.
Connect the ground wire to the ground rod. Secure the wire
to a wall or some surface to protect it.
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