🔍 Key Concepts
• RADAR receiver controls and what each one does (gain, tuning, STC, FTC, etc.)
• What sea clutter/sea return looks like on a radar screen, especially near own ship
• The difference between sensitivity, selectivity, and stability in a radio/RADAR receiver
💭 Think About
• Think about what problem the STC control is designed to solve on the radar display—what is happening close to your ship that makes targets hard to see?
• Consider whether STC changes HOW sharply you can separate two targets, HOW weak a target you can detect, or HOW much close‑range clutter you see.
• Ask yourself: does STC mainly affect near-range echoes, far-range echoes, or the entire screen equally?
✅ Before You Answer
• Verify which control (STC, gain, tuning, FTC) is associated with reducing short‑range clutter on the display.
• Make sure you can clearly define sensitivity (ability to pick up weak signals) vs selectivity (ability to separate signals of different frequencies).
• Confirm whether stability refers to maintaining a steady picture/operation over time, and if that is what STC actually adjusts.