What are Range Marks?

What are Range Marks?

• A. Intensified points at regular intervals along the sweep
• B. The maximum range settings displayed numerically
• C. The transition points between sweep directions
• D. The markers for heading indication

Answer: (A)

Range marks are distance reference points on a radar display. They appear as intensified points at regular intervals along the sweep, each one marking a fixed range increment from the radar. These marks give you a quick way to gauge how far away a detected object is by comparing its echo to the nearest marks, with the spacing determined by the current range scale. They’re not the numerical readout of the maximum range, not the points where the sweep changes direction, and not heading indicators, which serve different functions.

Range marks are distance reference points on a radar display. They appear as intensified points at regular intervals along the sweep, each one marking a fixed range increment from the radar. These marks give you a quick way to gauge how far away a detected object is by comparing its echo to the nearest marks, with the spacing determined by the current range scale. They’re not the numerical readout of the maximum range, not the points where the sweep changes direction, and not heading indicators, which serve different functions.