LESSON 1
CW RADIO TRANSMITTERS
SCOPE.....................................Types of CW transmitters; classes of am-
plifiers; amplifiers as oscillators, buf-
fers, frequency multipliers, power and
voltage amplifiers; biasing; methods of
keying.
CREDIT HOURS..............................1
TEXT ASSIGNMENT...........................TM 11-665, para 1-5; 52-56; 60-63
MATERIALS REQUIRED........................None
SUGGESTIONS...............................None
LESSON OBJECTIVES
When you have completed this lesson, you will be able to:
1. Explain the principles of CW transmission.
2. Distinguish between the types of amplifiers, classes of amplifiers, and methods
of biasing used in transmitters.
3. Identify the different methods used to key CW transmitters.
4. Determine which types and classes of amplifiers can be used as oscillators,
DNI CORRECTIONS TO TM 11-665
Page 81, para 55a(l), line 1.
Delete "transmitted" and substitute transmitter.
LESSON EXERCISES
In each of the following exercises, select the ONE answer that BEST completes
the statement or answers the question.
Indicate your solution by circling the
letter opposite the correct answer in the subcourse booklet.
1. When checking over a new type of signal generator, you determine that the
frequency range is from 200 to 2,500 Hz. This range of frequencies is associated
with
321
3
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