Key Topic 28: Miscellaneous Flashcards
8-28C1: The purpose of the discriminator circuit in a RADAR set is to?
A. Discriminate against nearby objects.
B. discriminate against two objects with very similar bearings.
C. Generate a corrective voltage for controlling the frequency of the klystron local oscillator.
D. Demodulate or remove the intelligence from the FM signal.
C. Generate a corrective voltage for controlling the frequency of the klystron local oscillator.
8-28C2: The MTI circuit:
A. Acts as a mixer in a RADAR receiver.
B. Is a filter, which blocks out stationary targets, allowing only moving targets to be detected.
C. Is used to monitor transmitter interference.
D. Will pick up targets, which are not in motion.
B. Is a filter, which blocks out stationary targets, allowing only moving targets to be detected.
8-28C3: Where is a RF attenuator used in a RADAR unit?
A. Between the antenna and the receiver.
B. Between the magnetron and the antenna.
C. Between the magnetron and the AFC section of the receiver.
D. Between the AFC section and the klystron.
C. Between the magnetron and the AFC section of the receiver.
8-28C4: The condition known as “glint” refers to a shifting of clutter with each RADAR pulse and can be caused by a:
A. Improperly functioning MTI filter.
B. Memory failure.
C. Low AFC voltage.
D. Interference from electrical equipment.
A. Improperly functioning MTI filter.
8-28C5: An ion discharge (TR) cell is used to:
A. Protect the transmitter from high SWRs.
B. Lower the noise figure of the receiver.
C. Tune the local oscillator of the RADAR receiver.
D. Protect the receiver mixer during the transmit pulse.
D. Protect the receiver mixer during the transmit pulse.
8-28C6: When the receiver employs an MTI circuit:
A. The receiver gain increases with time.
B. Only moving targets will be displayed.
C. The receiver AGC circuits are disabled.
D. Ground clutter will be free of “rabbits.”
B. Only moving targets will be displayed.
