Specifications

Table Of Contents
INTRODUCTION
Page 16 MRC-565 Packet Data Radio Operations and Maintenance
2 NETWORKS
2.1 Extended Line of Site Systems
The MRC-565 can operates in Extended Line-of-Sight (ELOS) networks using ground wave.
The range of communication by ground wave is primarily determined by diffraction around the
curvature of the earth, atmospheric diffraction, and troposphere propagation.
The RF protocol for these types of networks is called Line of Site (LOS). All radios in these
networks are defined with:
ROLE = LOS
There are 3 types radios:
Base
Repeater
Remote
The Base is always connected to a Host computer where data is being collected. Repeaters are
similar to Bases, but they do not have a Host connection. They repeat data collected from
Remotes to a Base which then sends the Data to the Host.
Remote stations connect to either a Base or a Repeater. When they have data to send in, they
transmit data directly to the Base of Repeater in carrier sense multiple access mode.
The remainder of this manual is organized in the following sections:
Section 3.0 DESCRIPTION
This section provides both a physical description and a functional description of each module
in the MRC-565. The detailed technical specifications for each printed circuit board
assembly (PCA) and the organization of the memory is provided.
Section 4.0 INSTALLATION
Site selection and general installation guidelines are provided in this section, including
instructions for cabling, antenna, and power source connections. Power up procedures,
initialization and functional test procedures are described that should be performed prior to
placing the MRC-565 on-line within the network.
Section 5.0 OPERATION
This section describes all the operating procedures for the MRC-565. All commands and
operational parameters are described for data collection, supervisory control, messaging and