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Installation
4009-91MK3 Installation Manual
3-7
1.
Retract the ground wire provided
(coiled and stored between the
upper & lower base plates directly
under the ground connection label).
If this wire is not long enough to
reach a metal surface that is
common with the hull, provide a
grounding strap/cable (of adequate
gauge for the length) to provide a
good ground drain for the antenna
pedestal. This cable/strap must also
be insulated where it may be
exposed to weather.
NOTE: Minimum
gauge should not be
smaller than
10 AWG
, even for a short cable
run.
2.
Route the ground cable/strap
through the radome base with the
coax and power cables.
3.
If you are providing a
longer/different ground cable/strap,
connect grounding strap/cable to
the burnished ground point on the
upper base plate.
4.
Route the ground strap/cable
through one of the Roxtec®
Multidiameter® blocks with the
other power and coax cables.
5.
Connect the other end of the
grounding strap/cable to a
burnished ground point on, or near,
the mounting surface. Bi-metal
coupling plate may be required to
get good electrical coupling to the
hull of the ship. Protective coating
should be applied to prevent the
grounding point from rusting or
corroding.
3.5.
Removing the Shipping/Stow Restraints PRIOR to Power-Up
The order in which the restraints are removed is not critical.
CAUTION:
There are three shipping/Stow restraints on this antenna pedestal
that
MUST
be removed,
before energizing
the antenna, for normal operation.
3.5.1.
Removing the AZ Shipping/Stow Restraint
1.
The AZ Shipping/Stow restraint is formed by a
pin bolt that is lowered into a channel in a
stowage block on the upper plate of the
pedestal (as shown).
Содержание Cobham 4009-91 MK3
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