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1. Radio <br /> a. Each radio shall use a high performance asynchronous digital <br /> transmission technique, here after referred to as a digital radio. Radio <br /> using external or interior modems, or any other analog transmission <br /> technique is not acceptable. The digital radio shall be MDS 4710A <br /> (456.0625 MHz TX,RX) with remote diagnostic software to match City <br /> Standard, no equal. <br /> 2. Antenna System <br /> a. Each antenna system shall be furnished and installed complete and <br /> functional for the intended use. An antenna system shall include but not <br /> Ioe limited to, antenna, antenna pole, mounting hardware, lightning <br /> ,arrestor, and coaxial cables with connectors. <br /> b. Antenna system shall be meet the following specifications: <br /> 1) Antenna shall be installed and supported as shown on the <br /> Contract Drawings. Support members shall have sufficient <br /> strength to withstand local wind conditions and shall be protected <br /> from sun exposure and corrosive chemical damage. <br /> 2) Support hardware such as clamps, orientation mounts, and offset <br /> brackets shall be steel protected with a hot dip galvanized finish or <br /> stainless steel. Clamps and mounts shall be heavy duty in orderto <br /> transfer the full antenna load to the support tower or mast. Bolts <br /> and screws shall be stainless steel. <br /> 3) All mating connectors that are exposed to weather shall be <br /> wrapped with a sealing material designed to protect against water <br /> and dirt entry into the connectors. <br /> 4) An in-line antenna lighting arrester shall be furnished on each <br /> antenna coaxial transmission line. The lighting arrester shall be <br /> grounded to the radio enclosure bulkhead and to the sites <br /> grounding system by a #8 AWG or larger bonding wire. The <br /> lighting arrester shall be a PolyPhaser IS-B50LN-C1 with <br /> bulkhead mount. <br /> 5) The Yagi radio antenna shall be 10 dB gain, broadband, vertically <br /> polarized, directional type Yagi, VSWR 1.5:1, 50 ohm impedance <br /> cut to Owner frequency, Decibel DB436, or approved equal. <br /> C. Transmission Cable <br /> 1) Provide 50 Ohm,weatherproof coaxial cable. The coax cable shall <br /> have a corrugated outer conductor of copper, copper-clad <br /> aluminum inner conductor with foam dielectric. The coax cable <br /> shall be jacketed for corrosive environment and ultra-violet <br /> exposure. The coax cable shall be supertlexible, with a minimum <br /> bending radius of 1.25 inches. <br /> 2) Provide 1/4" foam dielectric "superflexible" coaxial cable for the <br /> main transmission line between the radio and lighting arrester. <br /> Use Andrew FSJ1-50A 1/4" supertlexible coax cable. <br /> July 2007 Division 111-202 NEI Phase II Water and Sewer <br /> CIP Nos. 7468, 7589, 7590 <br />