Key Topic 27: Interference Issues

Question 1

8-27C1: One of the best methods of reducing noise in a RADAR receiver is?

A. Changing the frequency.
B. Isolation.
C. Replacing the resonant cavity.
D. Changing the IF strip.

Answer 1

B. Isolation.

Question 2

8-27C2: The primary cause of noise in a RADAR receiver can be attributed to:

A. Electrical causes.
B. Atmospheric changes.
C. Poor grounding.
D. Thermal noise caused by RADAR receiver components.

Answer 2

D. Thermal noise caused by RADAR receiver components.

Question 3

8-27C3: Noise can appear on the LCD as:

A. Erratic video and sharp changes in intensity.
B. Black spots on the screen.
C. Changes in bearings.
D. None of the above.

Answer 3

A. Erratic video and sharp changes in intensity.

Question 4

8-27C4: RADAR interference on a communications receiver appears as:

A. A varying tone.
B. Static.
C. A hissing tone.
D. A steady tone.

Answer 4

D. A steady tone.

Question 5

8-27C5: In a RADAR receiver the most common types of interference are?

A. Weather and sea return.
B. Sea return and thermal.
C. Weather and electrical.
D. Jamming and electrical.

Answer 5

A. Weather and sea return.

Question 6

8-27C6: Noise can:

A. Mask larger targets.
B. Change bearings.
C. Mask small targets.
D. Increase RADAR transmitter interference.

Answer 6

C. Mask small targets.