User Manual

Table Of Contents
RF-Orchestra!™ Transmitter Installation and Operation Preinstallation
July 2000 6880493G02-C 3-11
Antenna Installation
This section covers antenna installation considerations and methods. For further information
on antenna installation requirements and methods, refer to the Motorola Quality Standards-
Fixed Network Equipment (FNE) Installations manual, Motorola part number 6881089E50.
Antenna Feed Line Requirements
The transmission line entry for all antennas should be installed with a metal antenna entry
plate external to the site building. All entry ports must be covered to prevent small animals or
objects from entering. Transmission lines must be grounded to the exterior ground bar below
the waveguide entry port using manufacturer-approved grounding kits.
To reduce interference (intermodulation) problems, connectors on the transmit antenna lines
should be silver-plated. The plating on the male-female connector combination must match on
both connectors. For example, a male connector containing a silver-plated center pin and
silver- plated outer conductor should mate with a female connector containing a silver-plated
center pin and silver-plated outer conductor.
Antenna Feed Line Identification
All antenna feed lines should be marked appropriately to simplify proper connections.
Colored vinyl tape is recommended for identifying the antenna feed lines. Use 3M colored
outdoor marking tape or a permanent, color-fast equivalent.
Note: The color coding scheme identified within this manual is a recommendation only. The purpose
for identifying specific colors is an attempt to obtain uniformity between sites. Other color
schemes may be used.