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Consider these statements: (I) a repeater is essentially a combined receiver and

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1. Consider these statements: (I) a repeater is essentially a combined receiver and transmitter, (II) a modulated wave results from superimposing an audio wave onto a carrier wave, and (III) sky waves are AM radio waves received after reflecting off the ionosphere. Which are correct?

Only statement I

Statements II and III

Statements I and III

All three statements

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All three statements are correct — a repeater both receives and retransmits signals, a modulated wave is exactly the combination of audio and carrier waves, and AM sky waves genuinely do rely on ionospheric reflection.

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Consider these statements: (I) a repeater is essentially a combined receiver and

Keep practicing

Beyond the answer

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