Bid Package 08 North Well Field - Garney Construction

2.04 COAXIAL CABLE
A. Coaxial cable shall meet the following requirements:
Characteristic impedance:
Outer Conductor:
Inner Conductor:
Dielectric:
Seal:
50 ohms
Copper, annularly corrugated
Copper
Closed cell low loss foam
Connector o-rings to seal out moisture
1. Coaxial cable shall be Times Microwave LMR type or approved equal.
2. Diameter of coaxial cable shall be sized as indicated on the drawings and so that
feedline loss from the antenna-side of the coaxial surge suppressor to the antenna does
not exceed 1dB for directional antennas and 2 dB for omni-directional antennas.
Feedline losses shall be calculated at the operating radio frequency and shall include
losses in cable and connectors. The minimum size coaxial cable provided from the
panel to the antenna shall be ½” diameter unless larger size is shown on drawings.
3. All coaxial connectors shall be Type-N connectors. Connectors shall be manufactured
by the same cable manufacturer which furnishes the coaxial cable. Connectors shall be
Andrews Corporation Heliax cable connectors, or approved equal. All connectors shall
be constructed of brass or be silver plated as recommended by manufacturer.
Connectors shall have o-ring seal.
4. All connections shall be weatherproofed using 3M-brand cold shrink weatherproofing
kit or approved equal cold shrink weather proofing kit.
5. Provide a pre-made cable assembly of Times Microwave LMR coaxial cable to connect
from the radio antenna port to the radio-side of the coaxial surge suppressor. Provide
straight or angled N-type connectors as necessary to route cable assembly within panel
without exceeding manufacturer’s recommended bend radius. The pre-made cable
shall be assembled by the coaxial cable manufacturer and shall be shipped with a
certification of assembly and testing.
6. Cable hangers shall be Andrews Hanger Model 42396A-5 for 7/8” cable or 43211A for
½” cable with Andrews Round Member Adapter Model 31670, or approved equal. The
use of plastic tie wraps is not acceptable.
2.05 COAXIAL GROUNDING KIT
A. Grounding straps shall be solid copper for high current handling. Construction shall be of
the non-braided type. Grounding cable shall have field attachable grounding lug with a twopart
tape system for weatherproofing. Grounding kit shall be Andrew Corporation or
approved equal.
Supervisory Control and Data Acquisition (SCADA) System 40 90 02-18
CMD11269 – Ward County Transmission System Expansion – Contract C – Above Slab TPS, OPS, and WPS