What are TT&C channels and why are they essential for satellite operations?

• A. TT&C stands for Telemetry, Tracking, and Command; used for health monitoring, orbit tracking, and issuing control commands.
• B. TT&C stands for Time Tagging and Control; used for scheduling.
• C. TT&C stands for Transmission, Tone, and Carrier; used for modulation.
• D. TT&C stands for Telemetry, Timing, and Conditioning; used for calibration.

Answer: (C)