User Manual Chapter 3

Chapter 3 - 3
2. Site preparation: 2. Site preparation:
• Erect masts or towers with grounding systems in accordance with state and local codes.
• Drill holes as needed and prepare antenna for mounting.
• Drill and prepare RF cable access and cable run holes as needed.
• Other custom mounting accommodations as needed (fabricate custom brackets or the like).
3. Antenna Mounting:
• Mount antenna assembly on wall, mast or tower according to manufacturer’s instructions.
NOTE: The antenna must be mounted for vertical polarization.
• Point antenna toward the assigned cell site.
For all antenna locations, point the antenna towards the designated cell site identified by the Network Manager. Use the
methods described in the Site Survey section of Chapter 2 of this manual to maximize performance and minimize
interference.
4. Grounding:
• ROOFTOP INSTALLATIONS
o Rooftop installations require 2-point grounding using #2 AWG solid copper wire. Bond to any of the
following:
§ Building steel or lightning protection ground wire.
§ Cold water main.
§ Ground conductor to exit or halo down.
o Ground the RF cable at the entry to building or cabinet.
• TOWER INSTALLATIONS
o Ground all antennas at the top of the tower. Bond to the tower itself, or run a ground conductor down.
o If the tower is over 200 feet tall, ground the RF cable at the middle of tower.
o Ground the RF cable at the bottom of the tower.
o Cadwelds underground.
o Double lug compression above ground. Bolts must be stainless steel.
o Kopr-Shield all mechanical interfaces.
o 2-Point grounding to inside of building.
o Halo ground installed at least 18 in. below grade.
o Halo comprised of #2 AWG tinned solid copper wire.
o Test the grounding system to prove system less than 10 ohms.
o All grounds should "flow downstream" with minimum bend radius (6 in. for #6, 12 in. for #2).
o Halo must have 10 ft. ground rods driven down approximately every 10 ft. Rods must be 5/8 in. steel clad
with pure copper not less than 0.0012 in.