LESSON OBJECTIVES
ACTION:
The student can accomplish the following tasks:
a.
Explain the propagation of electromagnetic waves
in the earth's natural environment.
b.
List the principal modes of propagation.
c.
Describe the following types of propagation:
(1)
Line-of-sight.
(2)
Refraction mode (sky wave).
(3)
Scatter mode.
(4)
(5)
Waveguide and mixed mode.
d.
State the range capabilities of the five modes of
propagation.
e.
Cite the uses, advantages and
disadvantages of
the five modes of propagation.
CONDITIONS:
Student may use lesson 4 of this subcourse.
STANDARD:
The standard of performance will be met when the
student has correctly completed 9 out of 11 questions
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