Grounding Conductors

[_____] ice without failure. The antenna system shall be selected by the

Contractor to meet the requirements as determined from the topography.

Lightning protection shall comply with NFPA 780.

2.8.1

Grounding Conductors

Antenna grounding conductors shall be minimum 32-strand, No. 8 AWG copper.

2.8.2

Ground Rods

Ground rods shall be as specified in Section 16370A ELECTRICAL DISTRIBUTION

SYSTEM, AERIAL.

2.8.3

Transmission Line

The transmission line between transmitter and antenna shall be 50 ohm

impedance, foam dielectric coaxial cable rated for the transmitter output

power. Minimum requirement shall be RG-8/U foam dielectric. For lengths

in excess of 17 meters 50 feet, transmission line shall be of the

corrugated copper outer sheath type with either foam or air dielectric.

PART 3

EXECUTION

3.1

INSTALLATION

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NOTE: Coordinate with appropriate electrical

sections required by the design.

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System components and appurtenances shall be installed in accordance with

the manufacturer's instructions and as shown. Necessary interconnections,

services, and adjustments required for a complete and operable radio

control system shall be provided and shall be fully integrated with the

UMCS. Grounding shall be in accordance with IEEE Std 142.

3.1.1

Software

The Contractor shall load all software required for a completely

operational one-way FM radio control. The Contractor shall adjust, tune,

debug, and commission all software and parameters for controlled systems to

assure proper operation in accordance with the specification.

3.1.2

Antenna

Tubular radiator elements shall be plugged to prevent wind vibration

fatigue. Vertical tubular elements shall have drain holes near the bottom.

Outside connectors shall be snug, filled with silicone grease, and

properly sealed with heat-shrink wrap suitable for ambient temperatures of

minus 30 to 60 degrees C minus 22 to 140 degrees F.

3.1.3

Interior Work

Interior electrical work shall be installed as specified in Section 16402

INTERIOR DISTRIBUTION SYSTEM and as shown.

SECTION 16797A

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