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Lesson 1/Learning Event 2 Practice Exercise
Lesson 1. Comprehensive Practice Exercise
Radio Wave Propagation and Antennas
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5.
To be refracted higher frequencies--
a.
requires less ionization.
b.
requires more ionization.
c.
requires the use of the atmosphere.
d.
requires the use of the stratosphere.
Turn to page 168 to check your answers.
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