Rx Splitter; Site Controller Module; Xhub; Base Radio Module - Motorola MTS LiTE Installation, Configuration And Basic Service Manual

6802800U74-AN
Chapter 1: MTS Overview
The following table shows the frequency range covered by various Hybrid Combiners.
Table 9: Hybrid Combiner — Frequency Range
Hybrid Combiner
260 MHz
400 MHz
800 MHZ
900 MHz
1.7.1.6

Rx Splitter

The RX splitter is a passive device, receiving the signal from the Expansion Out connector of the
Duplexer/Preselector in the MTS 4 Prime Cabinet and then distributes it to the Base Radios in the MTS
4 Expansion Cabinet.
1.7.2

Site Controller Module

The Site Controller (SC) controls resources within the base station, including frequency and slot
assignment to mobile stations. The Site Controller incorporates a Global Positioning System (GPS),
which receives signals for developing high-precision system timing signals.
The Site Controller communicates with the Base Radio through the 100Base-T Ethernet interface and
with the network through an X.21 or E1 link.
1.7.3

XHUB

The eXpansion HUB (XHUB) is a non-intelligent switching and interface module, which plugs into the
Site Controller slot of an MTS 4 Expansion Cabinet. It is connected through the Expansion Cab output
of the Site Controller to the Prime Cab connector of the XHUB.
1.7.4

Base Radio Module

The Base Radio (BR) provides reliable digital communication capabilities. Each Base Radio contains
the following subcomponents:
• Transceiver
• Power Amplifier (PA)
1.7.4.1

Base Radio Transceiver

The transceiver provides the BRs with signal transmission, receiving, processing, and modulation
functions, incorporating a Base Radio Controller (BRC), Receiver (RCV), and Exciter (EXC).
The BRC serves as the main controller of the Base Radio, and provides signal processing and
operational control for the other Base Radio modules.
10
Frequency Range
260 MHz — 275 MHz
350 MHz — 470 MHz
850 MHz — 870 MHz
932 MHz — 942 MHz