*Question T1E03:
[97.103(b)] Who must designate the station control operator?*  

*Correct Answer is  A: The station licensee*  

### AI Response: (may contain errors)  

The correct answer to the question of who must designate the station control operator is:

**A: The station licensee**

### Explanation:

1. **Why the correct answer is correct:**
   - The station licensee is the individual or entity that holds the license for the station. According to FCC regulations, it is the responsibility of the licensee to designate a control operator for the station. This ensures that the person in charge is accountable for the operation of the station and compliance with all applicable rules.

2. **Why the other choices are incorrect:**
   - **B: The FCC**: While the FCC regulates and oversees amateur radio operations, it does not designate control operators. The licensee has the authority to make this designation.
   - **C: The frequency coordinator**: Frequency coordinators assist in managing frequency use and interference issues, but they do not have the authority to designate control operators for stations.
   - **D: Any licensed operator**: While any licensed operator can operate the station if designated as the control operator, it is ultimately the responsibility of the licensee to make that designation. Therefore, not just any licensed operator can unilaterally decide to be the control operator.

### Summary:
- The station licensee is responsible for designating the control operator to ensure compliance with FCC regulations.
- Other parties, such as the FCC, frequency coordinators, or any licensed operator, do not have the authority to make this designation. 

This understanding is crucial for the Extra Class exam and for operating within the rules of amateur radio.