CHAPTER 2
SYSTEMS EQUIPMENT
CONFIGURATIONS
INTRODUCTION
In chapter 1, we discussed basic system requirements. In this chapter, we will look at each equipment
configuration. We will then link them together, forming a block diagram of the systems covered. We will
discuss naval equipment from extremely-low-frequency through super-high-frequency. We also will look at
microwave communications, the Single Audio System, teletype equipment, portable and pack radio
equipment, and the Communications Link Interface Planning System.
At various points in the chapter, we review basic principles associated with the larger topic. The purpose
of those reviews is to refresh your memory, in case you have not worked in the area for sometime.
After completing this chapter, you should be able to:
Identify system equipment configurations and how they link together
Recognize various extremely-low-frequency through super-high-frequency naval equipment
Compare a simplex relay system with a duplex relay system in microwave communications
Identify teletype equipment and portable and pack radio equipment
Identify the Communications Link Interface Planning System
SHIPBOARD COMMUNICATIONS
OVERVIEW
Shipboard communications are now highly
sophisticated. Nearly all the communications
requirements for a ship can be met with fewer, more
versatile, pieces of equipment. This versatility came
about through improved equipment design and
installation.
As communications equipment became more
capable and complex, the need for an orderly process
of identifying equipment by designation became
apparent. The process that was developed identified
equipment from the system level down to the part
level. The highest level designator, system, describes
pieces of equipment that work together for a specific
function. The lowest level designator, part, describes
one piece, like a resistor. The following paragraphs
describe the various levels in greater detail.
SYSTEM
Recall from chapter 1 that a communications
system is a collection of equipment used together to
satisfy a specific communications requirement. Further,
as the following paragraphs explain, a system is a
combination of sets, units, assemblies, subassemblies,
and parts. The requirement placed on the system could
be to send or receive voice, cw, or teletype information.
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