Which of the following describes full break-in CW operation (QSK)?
The correct answer is D: Transmitting stations can receive between code characters and elements. Full break-in CW operation (QSK) means that transmitting stations can receive between code characters and elements. The receiver is active between transmitted characters, allowing you to hear other stations even while you're transmitting. For amateur radio operators, this allows true conversational CW operation. Understanding this helps when operating with QSK capability.
Exam Tip
Full break-in (QSK) = can receive between code characters. Think 'Q'SK = 'Q'uick 'S'witching 'K'eeps receiver active. Transmitting stations can receive between code characters and elements. Not about 'BK', keyers, or manual switching - about automatic receive during transmission.
Memory Aid
"Full break-in (QSK) = can receive between code characters. Think 'Q'SK = 'Q'uick 'S'witching 'K'eeps receiver active. Transmitting stations can receive between code characters and elements. Automatic receive during transmission."
Real-World Application
You operate CW with full break-in (QSK). As you send each character, the receiver automatically switches on between characters, allowing you to hear if the other station is trying to break in. This allows true conversational CW - you can hear interruptions immediately, not just when you finish your transmission.
Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. 'BK' is a prosign for 'break,' but it's not what defines full break-in. QSK is about receiving during transmission, not about sending 'BK.'
Option B: Incorrect. Automatic keyers vs hand keys is about keying method, not break-in operation. QSK works with either.
Option C: Incorrect. Manual send/receive switching is semi-break-in, not full break-in. Full break-in (QSK) is automatic.
题目解析
The correct answer is D: Transmitting stations can receive between code characters and elements. Full break-in CW operation (QSK) means that transmitting stations can receive between code characters and elements. The receiver is active between transmitted characters, allowing you to hear other stations even while you're transmitting. For amateur radio operators, this allows true conversational CW operation. Understanding this helps when operating with QSK capability.
考试技巧
Full break-in (QSK) = can receive between code characters. Think 'Q'SK = 'Q'uick 'S'witching 'K'eeps receiver active. Transmitting stations can receive between code characters and elements. Not about 'BK', keyers, or manual switching - about automatic receive during transmission.
记忆口诀
Full break-in (QSK) = can receive between code characters. Think 'Q'SK = 'Q'uick 'S'witching 'K'eeps receiver active. Transmitting stations can receive between code characters and elements. Automatic receive during transmission.
实际应用示例
You operate CW with full break-in (QSK). As you send each character, the receiver automatically switches on between characters, allowing you to hear if the other station is trying to break in. This allows true conversational CW - you can hear interruptions immediately, not just when you finish your transmission.
错误选项分析
Option A: Incorrect. 'BK' is a prosign for 'break,' but it's not what defines full break-in. QSK is about receiving during transmission, not about sending 'BK.' Option B: Incorrect. Automatic keyers vs hand keys is about keying method, not break-in operation. QSK works with either. Option C: Incorrect. Manual send/receive switching is semi-break-in, not full break-in. Full break-in (QSK) is automatic.
知识点
Full break-in, QSK, CW operation, Break-in operation
Verified Content
Question from official FCC General Class question pool. Explanation reviewed by licensed amateur radio operators.