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Question 399

What is a frequency discriminator?

  1. An FM generator circuit
  2. A circuit for filtering closely adjacent signals
  3. An automatic band-switching circuit
  4. A circuit for detecting FM signalsCorrect answer

Explanation

A frequency discriminator is an FM detector. Its tuned circuits convert deviation about the center frequency into a proportional output voltage, which is the recovered audio.

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Question 399: What is a frequency discriminator? · FCC Amateur Extra Class (Element 4) · Questena