AEHF expands to Advanced Extremely High Frequency.

• A. Aerospace Electronic High Frequency
• B. Additional Extremely High Frequency
• C. Advanced Extremely High Frequency
• D. Advanced Extremely High Fidelity

Answer: (C)

AEHF stands for Advanced Extremely High Frequency. In military communications, the name follows a pattern where the first word signals a newer generation, and the next two words describe the frequency band used for the system. “Advanced” indicates it’s the next generation, and “Extremely High Frequency” identifies the radar/satellite band in the spectrum (the EHF range, used for secure, jam-resistant satellite links). The other options don’t fit because their middle or end terms don’t match the established designation: “Aerospace Electronic High Frequency” isn’t a standard expansion; “Additional Extremely High Frequency” uses a word that would imply something extra rather than a generation; and “Advanced Extremely High Fidelity” swaps “Frequency” for “Fidelity,” which changes the meaning from the radio band to quality.