This category covers 14 topics and has 39 questions.

• SSR Info
• Weather
• SSR Frequencies
• SSR Frequency Dif Reasons
• SSR Frequency Chg Action
• SSR Polar Diagram
• Ht Increments
• SSR SLS Purpose
• SSR SLS Polar Diagram
• SSR Mode A Codes
• SSR Codes
• SSR Garbling
• SSR Mode S Reasons
• SSR EHS and ELS