Observer Height input corresponds to the height of which element?

Observer Height input corresponds to the height of which element?

• A. Receiver Antenna
• B. Ship's Hull
• C. Cloud Base
• D. Ground Elevation

Answer: (A)

The observer height input is the height of the receiving antenna above the reference level (usually mean sea level). This height matters because it determines how far you can see or receive a signal on the surface—the higher the receiver antenna, the farther the line-of-sight extends before the Earth’s curvature blocks it. The hull height isn’t what’s being measured here, cloud base is unrelated to the ground-based propagation path, and ground elevation is terrain height, not where the measurement device sits. So, this input corresponds to the receiver antenna height.

The observer height input is the height of the receiving antenna above the reference level (usually mean sea level). This height matters because it determines how far you can see or receive a signal on the surface—the higher the receiver antenna, the farther the line-of-sight extends before the Earth’s curvature blocks it. The hull height isn’t what’s being measured here, cloud base is unrelated to the ground-based propagation path, and ground elevation is terrain height, not where the measurement device sits. So, this input corresponds to the receiver antenna height.