Where should the antenna be fastened when installed?

Where should the antenna be fastened when installed?

• A. To the aircraft structure
• B. To the cabin interior panel
• C. To the pitot tube
• D. On the engine cowling

Answer: (A)

Antenna performance relies on a solid, appropriate external mounting on the airframe. Fastening the antenna to the aircraft structure provides a stable, vibration-resistant base that’s designed to support RF equipment and keeps the radiator away from interior materials and moving parts. Mounting it on the cabin interior panel would place it behind shielding and inside the cabin, degrading signal quality. Placing it on the pitot tube would interfere with the pitot-static system and be unreliable for airspeed sensing, while mounting on the engine cowling could affect aerodynamics, heat exposure, and reliability. So, the best choice is to attach the antenna to the aircraft structure.

Antenna performance relies on a solid, appropriate external mounting on the airframe. Fastening the antenna to the aircraft structure provides a stable, vibration-resistant base that’s designed to support RF equipment and keeps the radiator away from interior materials and moving parts. Mounting it on the cabin interior panel would place it behind shielding and inside the cabin, degrading signal quality. Placing it on the pitot tube would interfere with the pitot-static system and be unreliable for airspeed sensing, while mounting on the engine cowling could affect aerodynamics, heat exposure, and reliability. So, the best choice is to attach the antenna to the aircraft structure.