*Question E1A06:
[97.303(h)(1)] What is the required transmit frequency of a CW signal for channelized 60 meter operation?*  

*Correct Answer is  B: At the center frequency of the channel*  

### AI Response: (may contain errors)  

For channelized 60 meter operation, the FCC requires that CW (Continuous Wave) signals be transmitted at the center frequency of the channel. This ensures that the signal is properly contained within the channel's bandwidth and minimizes interference with adjacent channels.

### Explanation:

1. **Correct Answer: B - At the center frequency of the channel**
   - **Why it's correct:** Transmitting at the center frequency ensures that the entire signal, including any sidebands, fits within the allocated channel bandwidth. This is crucial for maintaining orderly use of the spectrum and preventing interference with adjacent channels.

2. **Why the other choices are incorrect:**
   - **A: At the lowest frequency of the channel**
     - Transmitting at the lowest frequency could cause the signal to extend beyond the upper edge of the channel, leading to interference with adjacent channels.
   - **C: At the highest frequency of the channel**
     - Similarly, transmitting at the highest frequency could cause the signal to extend beyond the lower edge of the channel, again causing potential interference.
   - **D: On any frequency where the signal’s sidebands are within the channel**
     - This choice is too vague and does not guarantee that the entire signal will be properly centered within the channel. The FCC specifically requires operation at the center frequency to ensure compliance and minimize interference.

### Useful Rule of Thumb:

- **Channel Centering:** Always aim to transmit at the center frequency of a channel to ensure compliance with FCC regulations and to minimize the risk of interference with adjacent channels. This is especially important in band plans that are channelized, like the 60 meter band.