What type of threat can the Radar Warning Receiver (RWR) detect?

The Radar Warning Receiver (RWR) is specifically designed to detect and interpret radar signals emitted from various types of threats, such as those from surface-to-air missiles and enemy aircraft radar systems. By analyzing these incoming radar signals, the RWR provides vital information about potential threats in the vicinity, allowing aircrew to take appropriate defensive measures.

This capability to identify and differentiate between multiple threats is critical in enhancing situational awareness and effectiveness in combat scenarios. Unlike other options, which relate to environmental factors or non-threatening communications, the primary function of the RWR is focused on the detection of radar emissions that indicate imminent threats, making it a vital tool for defensive operations in the air.