Codan Radio MT-4R - Manual (Page 9)

UG-001 Daniels MT-4R and MT-4D Radio Systems
www.danelec.com
Chapter 1: Introduction 1
User
Guide
This document is written as an introduction to Daniels Electronics
Ltd. MT-4R and MT-4D P25 Digital and Analog Radio Systems. The
document assumes the reader is familiar with conventional Two-Way
Radio Communications systems.
Project 25 is a standards initiative, to be amended, revised and added
to as the users identify issues and as experience is gained.
DANIELS MODEL NUMBERS
Daniels Electronics Ltd. has manufactured radio systems for more
than 60 years. In the early years, Daniels manufactured AM and
SSB radiotelephones for the marine industry, and more recently,
the MT series of radios for mountain top repeaters and base station
applications.
MT-2
The MT-2 series of radio modules were originally manufactured in the
1980s. This radio series was a crystal controlled analog radio system
capable of wideband (25 KHz) operation. Although systems are still in
operation throughout North America, this series of radio modules was
discontinued in the 1990s and is no longer supported.
MT-3
The MT-3 series of radio modules were originally manufactured in the
early 1990s. This radio series was available with both crystal controlled
and synthesized analog radio modules capable of wideband (25 KHz)
or narrowband (12.5 KHz) operation. The MT-3 radio modules were
discontinued in 2006, with the exception of the VHF Lowband and AM
products. For more information on the MT-3 series of radios, see the
Daniels MT-3 Analog Radio Systems User Guide.
CHAPTER 1: INTRODUCTION