You are approaching a light fitted with a RACON. The light may be identified on the radar by __________.

When you are approaching a light fitted with a RACON, the radar response is designed to provide a distinctive coded signal that allows you to identify the light. This coded signal appears on the radar display at the same bearing as the light but at a greater range, effectively enhancing your ability to determine your location relative to the light. The coded signal is unique and represents the specific light, which is crucial for navigation and safety, especially in low visibility conditions.

The other options suggest various experiences with radar but do not accurately describe how a RACON signal functions. For instance, a dashed line or an audible signal may refer to other radar indications but do not pertain specifically to the function of a RACON. Similarly, a circle surrounding the light is not how a RACON is visually represented on radar. Thus, recognizing the coded signal at a greater range is fundamental in discerning the presence of a RACON-equipped light.