User's Manual Part 4

Multiple Compact BTS Configuration (Outdoor)
E-22 1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU MAY 2004
PRELIMINARY
Introduction
This section covers only the outdoor version of the multiple Compact
BTS configuration.
Materials Needed
The following materials are required to configure expansion BTSes.
S Varied length cables with RJ45 connectors
S Varied length cables with RF connectors
S Conduit (customer supplied)
S DC Power source (custoemr supplied)
S Battery Backup (customer supplied)
External Combiner and
Directional Coupler
A combiner and directional coupler are required for some of the
configurations. The following are the recommended specifications for
the combiner and directional coupler.
Table E-15: Combiner and Directional Coupler Specifications
Item Specifications
Combiner
Connector: N–Type
Frequency Range: Up to 2 GHz
Insertion Loss: 3.5 dB maximum
Return Loss: 16 dB minimum
Average Input Power: 60 Watts minimum
Directional Coupler
Connector: N–Type
Frequency Range: 810 to 950 MHz
Coupling: 30 +/–1 dB
Directivity: 28 dB minimum
Return Loss: 18 dB minimum
Average Input Power: 10 Watts minimum
S Motorola recommended directional coupler is P/N 809643T03
S Recommended cable with combiner is Andrew LDF4–50 or
equivalent
E