What is the required transmit frequency of a CW signal for channelized 60 meter operation?
The correct answer is B: At the center frequency of the channel. The required transmit frequency of a CW signal for channelized 60 meter operation is at the center frequency of the channel. 60-meter channels are specified by their center frequencies, and CW must be transmitted at the center. For amateur radio operators, this is important for 60-meter operation. Understanding this helps ensure legal 60-meter operation.
Exam Tip
60m CW transmit frequency = center frequency of channel. Think '6'0m 'C'W = 'C'enter 'W'avelength (center frequency). 60-meter channels are specified by center frequencies, and CW must be transmitted at center. Not lowest, not highest, not any frequency - just center frequency.
Memory Aid
"60m CW transmit frequency = center frequency of channel. Think '6'0m 'C'W = 'C'enter frequency. 60-meter channels are specified by center frequencies, and CW must be transmitted at center. Important for 60-meter operation."
Real-World Application
Channelized 60-meter operation: Each channel has a specific center frequency (e.g., 5.332.5 MHz). For CW signals, you must transmit at the center frequency of the channel, not at the edges or anywhere else. The center frequency is the required transmit frequency. This is the requirement for 60-meter CW operation.
FCC Part 97.303Key Concepts
Why Other Options Are Wrong
Option A: Incorrect. Lowest frequency of channel isn't the requirement - CW must be at center frequency. Lowest frequency is wrong.
Option C: Incorrect. Highest frequency of channel isn't the requirement - CW must be at center frequency. Highest frequency is wrong.
Option D: Incorrect. Any frequency where sidebands are within channel isn't the requirement - CW must be at center frequency. Any frequency is wrong.
题目解析
The correct answer is B: At the center frequency of the channel. The required transmit frequency of a CW signal for channelized 60 meter operation is at the center frequency of the channel. 60-meter channels are specified by their center frequencies, and CW must be transmitted at the center. For amateur radio operators, this is important for 60-meter operation. Understanding this helps ensure legal 60-meter operation.
考试技巧
60m CW transmit frequency = center frequency of channel. Think '6'0m 'C'W = 'C'enter 'W'avelength (center frequency). 60-meter channels are specified by center frequencies, and CW must be transmitted at center. Not lowest, not highest, not any frequency - just center frequency.
记忆口诀
60m CW transmit frequency = center frequency of channel. Think '6'0m 'C'W = 'C'enter frequency. 60-meter channels are specified by center frequencies, and CW must be transmitted at center. Important for 60-meter operation.
实际应用示例
Channelized 60-meter operation: Each channel has a specific center frequency (e.g., 5.332.5 MHz). For CW signals, you must transmit at the center frequency of the channel, not at the edges or anywhere else. The center frequency is the required transmit frequency. This is the requirement for 60-meter CW operation.
错误选项分析
Option A: Incorrect. Lowest frequency of channel isn't the requirement - CW must be at center frequency. Lowest frequency is wrong. Option C: Incorrect. Highest frequency of channel isn't the requirement - CW must be at center frequency. Highest frequency is wrong. Option D: Incorrect. Any frequency where sidebands are within channel isn't the requirement - CW must be at center frequency. Any frequency is wrong.
知识点
CW signal, Channelized 60 meter, Center frequency, Transmit frequency
Verified Content
Question from official FCC Extra Class question pool. Explanation reviewed by licensed amateur radio operators.