Which of the following HF digital modes can be used to transfer binary files?
The correct answer is B: PACTOR. Which of the following HF digital modes can be used to transfer binary files is PACTOR. PACTOR is designed for file transfer with error correction. For amateur radio operators, this is important for HF data communication. Understanding this helps when transferring files over HF.
Exam Tip
HF digital mode for binary file transfer = PACTOR. Think 'P'ACTOR = 'P'acket 'A'nd 'C'orrect 'T'ransfer 'O'f 'R'aw data. PACTOR is designed for file transfer with error correction. Not PSK31, not RTTY, not AMTOR - just PACTOR.
Memory Aid
"HF digital mode for binary file transfer = PACTOR. Think 'P'ACTOR = 'F'ile 'T'ransfer. PACTOR is designed for file transfer with error correction. Important for HF data communication."
Real-World Application
Transferring binary files over HF: PACTOR is the digital mode designed for this purpose. PACTOR includes error correction and can handle binary data, making it suitable for file transfer. PSK31, RTTY, and AMTOR are text-only modes. This is the mode - PACTOR can transfer binary files.
Key Concepts
Why Other Options Are Wrong
Option A (PSK31): Incorrect. PSK31 is for text communication, not binary file transfer - PACTOR is for file transfer. PSK31 isn't for files.
Option C (RTTY): Incorrect. RTTY is for text communication, not binary file transfer - PACTOR is for file transfer. RTTY isn't for files.
Option D (AMTOR): Incorrect. AMTOR is for text communication, not binary file transfer - PACTOR is for file transfer. AMTOR isn't for files.
题目解析
The correct answer is B: PACTOR. Which of the following HF digital modes can be used to transfer binary files is PACTOR. PACTOR is designed for file transfer with error correction. For amateur radio operators, this is important for HF data communication. Understanding this helps when transferring files over HF.
考试技巧
HF digital mode for binary file transfer = PACTOR. Think 'P'ACTOR = 'P'acket 'A'nd 'C'orrect 'T'ransfer 'O'f 'R'aw data. PACTOR is designed for file transfer with error correction. Not PSK31, not RTTY, not AMTOR - just PACTOR.
记忆口诀
HF digital mode for binary file transfer = PACTOR. Think 'P'ACTOR = 'F'ile 'T'ransfer. PACTOR is designed for file transfer with error correction. Important for HF data communication.
实际应用示例
Transferring binary files over HF: PACTOR is the digital mode designed for this purpose. PACTOR includes error correction and can handle binary data, making it suitable for file transfer. PSK31, RTTY, and AMTOR are text-only modes. This is the mode - PACTOR can transfer binary files.
错误选项分析
Option A (PSK31): Incorrect. PSK31 is for text communication, not binary file transfer - PACTOR is for file transfer. PSK31 isn't for files. Option C (RTTY): Incorrect. RTTY is for text communication, not binary file transfer - PACTOR is for file transfer. RTTY isn't for files. Option D (AMTOR): Incorrect. AMTOR is for text communication, not binary file transfer - PACTOR is for file transfer. AMTOR isn't for files.
知识点
HF digital modes, Binary file transfer, PACTOR, File transfer
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.