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Subelement B
Transmitting Systems
Section 11
Transmitting Systems
The magnetron is used to:
  • Correct Answer
    Generate the output signal at the proper operating frequency.
  • Determine the shape and width of the transmitted pulses.
  • Modulate the pulse signal.
  • Determine the pulse repetition rate.
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The purpose of the modulator is to:
  • Transmit the high voltage pulses to the antenna.
  • Correct Answer
    Provide high voltage pulses of the proper shape and width to the magnetron.
  • Adjust the pulse repetition rate.
  • Tune the Magnetron to the proper frequency.
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Which of the following statements about most modern RADAR transmitter power supplies is false?
  • Correct Answer
    High voltage supplies may produce voltages in excess of 5,000 volts AC.
  • There are usually separate low voltage and high voltage supplies.
  • Low voltage supplies use switching circuits to deliver multiple voltages.
  • Low voltage supplies may supply both AC and DC voltages.
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The purpose of the Pulse Forming Network is to:
  • Act as a low pass filter.
  • Act as a high pass filter.
  • Correct Answer
    Produce a pulse of the correct width.
  • Regulate the pulse repetition rate.
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The purpose of the Synchronizer is to:
  • Generate the modulating pulse to the magnetron.
  • Correct Answer
    Generate a timing signal that establishes the pulse repetition rate.
  • Insure that the TR tube conducts at the proper time.
  • Control the pulse width.
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Which of the following is not part of the transmitting system?
  • Magnetron.
  • Modulator.
  • Pulse Forming Network.
  • Correct Answer
    Klystron.
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