Which of the following describes Baudot code?
The correct answer is C: A 5-bit code with additional start and stop bits. What describes Baudot code is a 5-bit code with additional start and stop bits. Baudot code uses 5 data bits plus start and stop bits for character encoding. For amateur radio operators, this is the code used in RTTY. Understanding this helps when operating RTTY.
Exam Tip
Baudot code = 5-bit code with start and stop bits. Think 'B'audot = 'B'asic '5'-bit code. Baudot code uses 5 data bits plus start and stop bits for character encoding. Not 7-bit (ASCII), not error correction, not SELCAL - just 5-bit with start/stop.
Memory Aid
"Baudot code = 5-bit code with start and stop bits. Think 'B'audot = 'B'asic '5'-bit. Baudot code uses 5 data bits plus start and stop bits. Standard RTTY character code."
Real-World Application
Baudot code: Each character is encoded using 5 data bits, plus a start bit and stop bit(s). This creates a 7-8 bit frame per character. Baudot code is used in RTTY (Radio Teletype) - it's the standard 5-bit code for amateur RTTY. This is how Baudot code works.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. 7-bit code with start, stop, and parity bits is ASCII, not Baudot - Baudot is 5-bit. 7-bit is ASCII.
Option B: Incorrect. Code using error detection and correction describes modern codes, not Baudot - Baudot is simple 5-bit code. Error correction isn't Baudot.
Option D: Incorrect. Code using SELCAL and LISTEN describes selective calling, not Baudot code - Baudot is 5-bit character code. SELCAL/LISTEN are different.
题目解析
The correct answer is C: A 5-bit code with additional start and stop bits. What describes Baudot code is a 5-bit code with additional start and stop bits. Baudot code uses 5 data bits plus start and stop bits for character encoding. For amateur radio operators, this is the code used in RTTY. Understanding this helps when operating RTTY.
考试技巧
Baudot code = 5-bit code with start and stop bits. Think 'B'audot = 'B'asic '5'-bit code. Baudot code uses 5 data bits plus start and stop bits for character encoding. Not 7-bit (ASCII), not error correction, not SELCAL - just 5-bit with start/stop.
记忆口诀
Baudot code = 5-bit code with start and stop bits. Think 'B'audot = 'B'asic '5'-bit. Baudot code uses 5 data bits plus start and stop bits. Standard RTTY character code.
实际应用示例
Baudot code: Each character is encoded using 5 data bits, plus a start bit and stop bit(s). This creates a 7-8 bit frame per character. Baudot code is used in RTTY (Radio Teletype) - it's the standard 5-bit code for amateur RTTY. This is how Baudot code works.
错误选项分析
Option A: Incorrect. 7-bit code with start, stop, and parity bits is ASCII, not Baudot - Baudot is 5-bit. 7-bit is ASCII. Option B: Incorrect. Code using error detection and correction describes modern codes, not Baudot - Baudot is simple 5-bit code. Error correction isn't Baudot. Option D: Incorrect. Code using SELCAL and LISTEN describes selective calling, not Baudot code - Baudot is 5-bit character code. SELCAL/LISTEN are different.
知识点
Baudot code, 5-bit code, Start and stop bits, RTTY
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.