What is the function of the ALQ-218?

• A. Detects, classifies, locates and reports radar emitters and radar associated signals.
• B. Generates radar jamming signals.
• C. Controls aircraft propulsion.
• D. Provides weather data.

Answer: (A)

The ALQ-218 is an airborne electronic support measures receiver that passively listens for radar emissions, identifies what kind of radar signals they are, determines the emitter’s likely location, and reports that information to the crew and EW systems. It collects RF energy across a wide range, classifies emitters (such as search, tracking, or guidance radars), and uses antenna arrays and processing to derive bearing and, with movement data, approximate position. The resulting threat information helps cue active electronic attack and inform situational awareness. It does not generate jamming signals, control propulsion, or provide weather data.