User's Manual

Cable entry
Figure 5-5: Hub Transceiver Cable Installation
5.2 Installation Detail – Outdoor Junction Box (OJB)
A multi-sector configuration consists of two or more Hub Transceivers mounted on a common
building roof or tower/monopole structure served by a single Wireless CMTS (W-CMTS) located
in an adjacent equipment room.
Each Hub Transceiver requires a separate upstream and downstream IF cable, so a six sector
(six Hub Transceiver) installation would require 12 IF coaxial cables. The DC power cables are
simply paralleled. This can be accomplished by running separate power cables from each Hub
Transceiver to the equipment room, or by installing an Outdoor Junction Box (OJB) on the
mounting structure adjacent to the Hub Transceivers and paralleling the DC power in the OJB.
An OJB may be used as a junction point for DC power as described here. It may also house
lightning protection, IF signal splitters and power supplies.
It is the installer’s responsibility to furnish, assemble and install the OJB.
5.2.1 Implementation
Arcwave’s implementation of an OJB as its test site is described and pictured below (Figures 5-
6 – 5-8).
June 2003 Page 5-5