User's Manual

MM102558V1 R1A
6 MASTR III ADC STATION DESCRIPTION
The MASTR III ADC base station may be equipped to operate in the VHF, UHF or 800 MHz band. The
station equipment is designed to install into a 19 inch wide rack mount equipment cabinet or rack. The
station can be equipped with a wide range of modules and accessories to meet a diverse range of system
requirements including simplex, half duplex, duplex and transmit-only frequency operation. Modulation
schemes include Frequency Modulated (FM) analog and digital modulation. Stations may be equipped as
a single stand-alone unit or as a multiple station installation including antenna combining and
multiplexing techniques.
The basic set of MASTR III ADC base station equipment consists of the following:
• MASTR III ADC T/R Shelf
• RF Power Amplifier
MASTR III ADC base stations are available with various combinations of the following equipment:
• Station Power Supply
• Antenna Switch
• TX/RX Antenna Duplexer
• TX Combiners and RX Multicouplers
• 37” and 83” Cabinets, and 86” Open Rack
6.1 MASTR III ADVANCED DIGITAL CAPABLE T/R SHELF
The ADC Transmitter/Receiver (T/R) Shelf provides housing and interconnection for the RF and control
modules.
Figure 6-1 shows a typical MASTR III ADC T/R shelf with the basic set of modules required
for basic Conventional FM transmit and receive applications. Additional modules are available for TX
Data requirements, RX audio multi-path filtering, and Conventional P25 applications.
The T/R Shelf is comprised of a 19 inch rack mountable enclosure, an Interface board and a Backplane
board to interconnect each module. The T/R shelf may be populated with various TX, RX, power and
control modules. The function of each module is briefly described in the following sections.
The plug-in modules available for Conventional applications include:
• TX Synthesizer Module • System Module
• RX Synthesizer Module • Adaptive Multi-Path Filter Module
• RX Front End Module • Data Module
• RX IF Module • DSP Module
• Power Module (DC)
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