Deep Dive: E1A06
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.
Why Other Answers 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.
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 Example
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.
Source & Coverage
Question Pool: 2024-2028 Question Pool
Subelement: E1A
Reference: FCC Part 97.303
Key Concepts
Verified Content
Question from the official FCC Extra Class pool. Explanation reviewed by licensed amateur radio operators and mapped to the E1A topic.