How should the signal from a Search And Rescue RADAR Transponder appear on a RADAR display?

The signal from a Search And Rescue RADAR Transponder is designed to help locate vessels or individuals in distress, and it conveys its position in a specific manner to ensure clarity and ease of identification. On a RADAR display, the correct representation of this signal appears as a series of 12 equally spaced dots.

This pattern allows operators to recognize the presence of a distress transponder distinctly, as the evenly spaced dots make it easier to differentiate from other types of returns that may be present on the display, such as those from waves, weather phenomena, or other vessels. The uniformity and arrangement of the dots serve a critical function in search and rescue operations, facilitating quicker responses to emergencies by providing clear and recognizable signals to rescuers.

In contrast, other options do not accurately represent how a Search And Rescue RADAR Transponder transmits its signal. Continuous lines, while they could represent larger objects or stationary targets, don’t convey the specific distress signal pattern. Flashing lights in a circular pattern and a random scatter of signals would not provide the structured and recognizable signal that a RADAR transponder is intended to display for effective identification and localization by rescuers.