MT-4E ANALOG & P25 DIGITAL RADIO SYSTEMS | MAINTENANCE GUIDE
Chapter 1: Codan Radio Maintenance Page 1
CHAPTER 1: CODAN RADIO MAINTENANCE
This document is written as a maintenance guide to Codan MT-4E Analog and P25 Digital Radio Systems.
The document assumes the reader is familiar with conventional Two-Way Radio Communications
systems and general electronics maintenance practices. This document is a companion document to
the Codan Communications MT-4E Analog and P25 Digital Radio Systems User Guide.
INTRODUCTION TO CODAN MT-4E
Codan MT-4E radio systems are designed for operation in highly varied conditions. Your application
may require high performance radio systems (intermodulation and selectivity) for operation in congested
radio sites, operation over wide temperatures using battery solar powered systems (low current drain),
or a confi gurable system for emergency deployment in a transportable case. Codan manufactures a
diverse range of radio products tailored to the type of operation you need.
The MT-4E radio system is characterized by high performance and reliability, whether it is a remote,
low current repeater or a high performance base station. The total system is designed to provide
dependable, low maintenance performance and great fl exibility for expansion and servicing.
The MT-4E series of radio and control modules are packaged in the compact Eurostandard housing with
anodized aluminum front panels, and are ruggedly designed for remote or transportable applications.
All of the modules use high reliability components and corrosion resistant fasteners.
The MT-4E radio system is specifi cally designed to deliver high performance under adverse conditions.
Voltage stress testing and a 24 hour burn-in is performed on the radio system and performance of the
system at room temperature (25°C) is documented and measured. As an option, extensive environmental
testing can be conducted over the temperature range - 30°C to + 60°C and the performance measured
to ensure compliance with the design specifi cations.
A Codan MT-4E radio system consists of separate RF receiver and transmitter modules plugged into
a standard 19” subrack. Each subrack also requires a control card and system regulator. External
connections to the system (COR, PTT, audio, channel select, etc.) are made through an auxiliary
connector on the rear of the subrack. An optional cable or terminal strip connector is available to
connect externally through the auxiliary connector to the radio system.
Summary of Contents for MT-4E
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