What is an electronic keyer?
The correct answer is C: A device that assists in manual sending of Morse code. An electronic keyer is a device that assists in manual sending of Morse code by providing proper timing and spacing for dots and dashes. It helps operators send clean, properly timed Morse code.
Electronic keyers typically have a paddle (two-lever key) that the operator uses. When you press one lever, the keyer generates a series of dots. When you press the other lever, it generates dashes. The keyer ensures proper timing - dots and dashes have the correct length, and spacing between elements, characters, and words is correct. This makes it much easier to send good Morse code compared to a straight key, where the operator must manually time everything.
Exam Tip
Electronic keyer = Assists Morse code sending. Remember: An electronic keyer is a device that helps you send Morse code with proper timing. You use a paddle, and the keyer generates properly timed dots and dashes.
Memory Aid
"**E**lectronic **K**eyer = **E**asy **K**eying (think 'EK = EK' = Easy Keying, assists Morse code)"
Real-World Application
You're learning Morse code and using an electronic keyer with a paddle. When you press the right lever, the keyer sends a dot with perfect timing. When you press the left lever, it sends a dash. The keyer ensures all your dots are the same length, all dashes are three times longer, and spacing is correct. This makes your Morse code much cleaner and easier to copy than if you were using a straight key and manually timing everything.
FCC Part 97.3Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. An electronic keyer doesn't switch antennas. That's the function of an antenna switch or relay.
Option B: Incorrect. Voice-activated switching (VOX) is a different function. Electronic keyers are for Morse code, not voice.
Option D: Incorrect. An interlock to prevent unauthorized use is a security feature, not what an electronic keyer does.
题目解析
The correct answer is C: A device that assists in manual sending of Morse code. An electronic keyer is a device that assists in manual sending of Morse code by providing proper timing and spacing for dots and dashes. It helps operators send clean, properly timed Morse code. Electronic keyers typically have a paddle (two-lever key) that the operator uses. When you press one lever, the keyer generates a series of dots. When you press the other lever, it generates dashes. The keyer ensures proper timing - dots and dashes have the correct length, and spacing between elements, characters, and words is correct. This makes it much easier to send good Morse code compared to a straight key, where the operator must manually time everything.
考试技巧
Electronic keyer = Assists Morse code sending. Remember: An electronic keyer is a device that helps you send Morse code with proper timing. You use a paddle, and the keyer generates properly timed dots and dashes.
记忆口诀
**E**lectronic **K**eyer = **E**asy **K**eying (think 'EK = EK' = Easy Keying, assists Morse code)
实际应用示例
You're learning Morse code and using an electronic keyer with a paddle. When you press the right lever, the keyer sends a dot with perfect timing. When you press the left lever, it sends a dash. The keyer ensures all your dots are the same length, all dashes are three times longer, and spacing is correct. This makes your Morse code much cleaner and easier to copy than if you were using a straight key and manually timing everything.
错误选项分析
Option A: Incorrect. An electronic keyer doesn't switch antennas. That's the function of an antenna switch or relay. Option B: Incorrect. Voice-activated switching (VOX) is a different function. Electronic keyers are for Morse code, not voice. Option D: Incorrect. An interlock to prevent unauthorized use is a security feature, not what an electronic keyer does.
知识点
Electronic keyer, Morse code, CW, Keying
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.