Nortel Networks P0992639 01 manual Installing external antennas and lightning surge arrestors

Installation / 35

Note: Up to 60 portables can be installed on a Norstar wireless system. Each portable telephone must be registered to a DN before it can be used. By default, no Companion portables are assigned to the DNs.

The range of portable extensions available for wireless registration is 637 to 696. This means that the digit 6 is not available as a destination code.

Installing external antennas and lightning surge arrestors

When installing external antennas and lightning surge arrestors:

•The antenna should always be mounted vertically. Refer to the figure Installed antenna and lightning surge arrestor (USA) on page 37.

•Use #8, 12 mm to 50 mm (1/2-in. to 2 in.) screws to mount the antenna bracket and lightning surge arrestor bracket to the wall.

•Always ensure that the antenna is clear of any adjacent obstruction, particularly metal. If more than one external antenna is used at a cell center, space them at least

1 m (40 in.) apart to avoid radio interference problems.

•When running the coaxial cable inside or outside, do not kink, stretch, or crush the cable. This will seriously affect its performance. The minimum recommended bending radius is 200 mm (8 in.).

•The coaxial cable length must not exceed 10 m.

•Use RG-58AU coaxial cables to connect the antennas to the base stations.

P0992639 01 Modular ICS Companion Installer Guide