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Subelement C
Receiving Systems
Section 19
Receiving Systems
Which of the following statements is true?
  • Correct Answer
    The front end of the receiver does not provide any amplification to the RADAR signal.
  • The mixer provides a gain of at least 6 db.
  • The I.F. amplifier is always a high gain, narrow bandwidth amplifier.
  • None of the above.
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Logarithmic receivers:
  • Can't be damaged.
  • Correct Answer
    Can't be saturated.
  • Should not be used in RADAR systems.
  • Have low sensitivity.
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RADAR receivers are similar to:
  • FM receivers.
  • HF receivers.
  • T.V. receivers.
  • Correct Answer
    Microwave receivers.
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What section of the receiving system sends signals to the display system?
  • Correct Answer
    Video amplifier.
  • Audio amplifier.
  • I.F. Amplifier.
  • Resolver.
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What is the main difference between an analog and a digital receiver?
  • Special amplification circuitry.
  • Correct Answer
    The presence of decision circuitry to distinguish between "on" and "off" signal levels.
  • An AGC stage is not required in a digital receiver.
  • Digital receivers produce no distortion.
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In a RADAR receiver, the RF power amplifier:
  • Is high gain.
  • Is low gain.
  • Correct Answer
    Does not exist.
  • Requires wide bandwidth.
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