What is the function of an electronic keyer?
The correct answer is B: Automatic generation of dots and dashes for CW operation. The function of an electronic keyer is automatic generation of dots and dashes for CW operation. Electronic keyers generate properly timed dots and dashes when you press paddles, making CW sending easier and more consistent. For amateur radio operators, this is the primary function of electronic keyers. Understanding this helps when using keyers.
Exam Tip
Electronic keyer function = automatic generation of dots and dashes for CW. Think 'E'lectronic 'K'eyer = 'E'lectronic 'K'eying (dots/dashes). Generates properly timed dots and dashes when you press paddles. Not transmit/receive switching, not antenna switching, not computer interface - just code generation.
Memory Aid
"Electronic keyer function = automatic generation of dots and dashes for CW. Think 'E'lectronic 'K'eyer = 'E'lectronic 'K'eying. Generates properly timed dots and dashes when you press paddles. Makes CW sending easier and more consistent."
Real-World Application
You use an electronic keyer for CW operation. When you press the dot paddle, the keyer automatically generates a properly timed dot. When you press the dash paddle, it generates a properly timed dash. The keyer makes CW sending easier and more consistent than manual keying.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Electronic keyers don't do automatic transmit/receive switching - that's what break-in (QSK) does. Keyers generate code, not switch functions.
Option C: Incorrect. Electronic keyers don't allow time for antenna switching - that's what delays do. Keyers generate code, not timing for switching.
Option D: Incorrect. Electronic keyers aren't computer interfaces for PSK/RTTY - those are different devices. Keyers are for CW code generation.
题目解析
The correct answer is B: Automatic generation of dots and dashes for CW operation. The function of an electronic keyer is automatic generation of dots and dashes for CW operation. Electronic keyers generate properly timed dots and dashes when you press paddles, making CW sending easier and more consistent. For amateur radio operators, this is the primary function of electronic keyers. Understanding this helps when using keyers.
考试技巧
Electronic keyer function = automatic generation of dots and dashes for CW. Think 'E'lectronic 'K'eyer = 'E'lectronic 'K'eying (dots/dashes). Generates properly timed dots and dashes when you press paddles. Not transmit/receive switching, not antenna switching, not computer interface - just code generation.
记忆口诀
Electronic keyer function = automatic generation of dots and dashes for CW. Think 'E'lectronic 'K'eyer = 'E'lectronic 'K'eying. Generates properly timed dots and dashes when you press paddles. Makes CW sending easier and more consistent.
实际应用示例
You use an electronic keyer for CW operation. When you press the dot paddle, the keyer automatically generates a properly timed dot. When you press the dash paddle, it generates a properly timed dash. The keyer makes CW sending easier and more consistent than manual keying.
错误选项分析
Option A: Incorrect. Electronic keyers don't do automatic transmit/receive switching - that's what break-in (QSK) does. Keyers generate code, not switch functions. Option C: Incorrect. Electronic keyers don't allow time for antenna switching - that's what delays do. Keyers generate code, not timing for switching. Option D: Incorrect. Electronic keyers aren't computer interfaces for PSK/RTTY - those are different devices. Keyers are for CW code generation.
知识点
Electronic keyer, Dots and dashes, CW operation, Automatic generation
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.