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ASSIGNMENT 1
Textbook assignment: Chapter 1, “Introduction to Radio-Frequency Communications,” pages 1-1
through 1-20. Chapter 2, “Introduction to Communications Theory,” pages 2-1 through 2-37.
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1-1. For naval communications to be
effective, all involved must be top
performers. Reliable, secure, and timely
receiving and transmitting of information
is the goal. Which of the following
requirement standards are used to
determine whether or not this goal has
been met?
1. Wartime
2. Peacetime
3. Cold war less 10 percent
4. Nuclear war less 25 percent
1-2. What are the two types of electrical
communications?
1. Radio and wire
2. Television and wire
3. Telegraph and radio
4. Television and radio
1-3. Which of the following terms includes
intelligence produced by wire, radio,
visual means, oral means or
electromagnetic systems?
1. Telecommunications
2. Radiotelegraph
3. Electrolysis
4. Photocopy
1-4. Radiotelegraph (cw) is valuable when
communicating to, from, and among
widely separated naval units. What is the
main advantage of the cw mode?
1. Cost
2. Speed
3. Security
4. Reliability
1-5. Tactical communications is usually
considered as line-of-sight. What
maximum distance is normally within the
line-of-sight range?
1. 5 miles
2. 25 miles
3. 50 miles
4. 250 miles
1-6. You want to transmit high-speed
automatic page or tape copy across an
ocean area. Which of the following
methods should you choose?
1. Facsimile
2. Radiotelegraph
3. Radiotelephone
4. Radioteletypewriter
1-7. What method is normally used to
transmit graphs electronically?
1. Facsimile
2. Radio teletypewriter
3. Frequency-shift keying
4. Audio-frequency-tone shifting
1-8. When you use subdivisions to assign
reference designators to equipment, what
is the designator of (a) the largest and (b)
the smallest?
1. (a) System
(b) set
2. (a) Set
(b) unit
3. (a) Unit
(b) assembly
4. (a) System
(b) part
