Key Topic 5: Range, Pulse Width, PRF

Question 1

8-5A1: For a range of 5 nautical miles, the RADAR pulse repetition frequency should be:

A. 16.2 Hz or more.
B. 16.2 MHz or less.
C. 1.62 kHz or more.
D. 16.2 kHz or less.

Answer 1

D. 16.2 kHz or less.

Question 2

8-5A2: For a range of 100 nautical miles, The RADAR pulse repetition frequency should be:

A. 8.1 kHz or less.
B. 810 Hz or less.
C. 8.1 kHz or more.
D. 81 kHz or more.

Answer 2

B. 810 Hz or less.

Question 3

8-5A3: The minimum range of a RADAR is determined by:

A. The frequency of the RADAR transmitter.
B. The pulse repetition rate.
C. The transmitted pulse width.
D. The pulse repetition frequency.

Answer 3

C. The transmitted pulse width.

Question 4

8-5A4: Short range RADARs would most likely transmit:

A. Narrow pulses at a fast rate.
B. Narrow pulses at a slow rate.
C. Wide pulses at a fast rate.
D. Wide pulses at a slow rate.

Answer 4

A. Narrow pulses at a fast rate.

Question 5

8-5A5: For a range of 30 nautical miles, the RADAR pulse repetition frequency should be:

A. 0.27 kHz or less.
B. 2.7 kHz or less.
C. 27 kHz or more.
D. 2.7 Hz or more.

Answer 5

B. 2.7 kHz or less.

Question 6

8-5A6: For a range of 10 nautical miles, the RADAR pulse repetition frequency (PRF) should be:

A. Approximately 8.1 kHz or less.
B. 900 Hz.
C. 18.1 kHz or more.
D. 120.3 microseconds.

Answer 6

A. Approximately 8.1 kHz or less.