Key Topic 11: Transmitting Systems

Question 1

8-11B1: The magnetron is used to:

A. Generate the output signal at the proper operating frequency.
B. Determine the shape and width of the transmitted pulses.
C. Modulate the pulse signal.
D. Determine the pulse repetition rate.

Answer 1

A. Generate the output signal at the proper operating frequency.

Question 2

8-11B2: The purpose of the modulator is to:

A. Transmit the high voltage pulses to the antenna.
B. Provide hih voltage pulses of the proper shape and width to the magnetron.
C. Adjust the pulse repetition rate.
D. Tune the Magnetron to the proper frequency.

Answer 2

B. Provide hih voltage pulses of the proper shape and width to the magnetron.

Question 3

8-11B3: Which of the following statements about most modern RADAR transmitter power supplies is false?

A. High voltage supplies may produce voltages in excess of 5,000 volts AC.
B. There are usually separate low voltage and high voltage supplies.
C. Low voltage supplies use switching circuits to deliver multiple voltages.
D. Low voltage supplies may supply both AC and DC voltages.

Answer 3

A. High voltage supplies may produce voltages in excess of 5,000 volts AC.

Question 4

8-11B4: The purpose of the Pulse Forming Network is to:

A. Act as a low pass filter.
B. Act as a high pass filter.
C. Produce a pulse of the correct width.
D. Regulate the pulse repetition rate.

Answer 4

C. Produce a pulse of the correct width.

Question 5

8-11B5: The purpose of the Synchronizer is to:

A. Generate the modulating pulse to the magnetron.
B. Generate a timing signal that establishes the pulse repetition rate.
C. Insure that the TR tube conducts at the proper time.
D. Control the pulse width.

Answer 5

B. Generate a timing signal that establishes the pulse repetition rate.

Question 6

8-11B6: Which of the following is not part of the transmitting system?

A. Magnetron.
B. Modulator.
C. Pulse Forming Network.
D. Klystron.

Answer 6

D. Klystron.