*Question E1F10:
[97.201] Who may be the control operator of an auxiliary station?*  

*Correct Answer is  B: Only Technician, General, Advanced, or Amateur Extra class operators*  

### AI Response: (may contain errors)  

In the context of amateur radio, an auxiliary station is a station that transmits signals to control another station. According to FCC rules, specifically 47 CFR § 97.201, the control operator of an auxiliary station must hold at least a Technician class license.

### Explanation:

1. **Correct Answer: B - Only Technician, General, Advanced, or Amateur Extra class operators**

   - **Why it's correct:** The FCC rules state that the control operator of an auxiliary station must be at least a Technician class licensee. This means that any operator with a Technician, General, Advanced, or Amateur Extra class license is eligible to be the control operator of an auxiliary station. This is because these license classes meet the minimum requirement set by the FCC.

2. **Why the other choices are incorrect:**

   - **Choice A: Any licensed amateur operator**
     - This choice is incorrect because it implies that even operators with a Novice class license can be control operators of an auxiliary station, which is not allowed under FCC rules.

   - **Choice C: Only General, Advanced, or Amateur Extra class operators**
     - This choice is incorrect because it excludes Technician class operators, who are indeed eligible to be control operators of an auxiliary station.

   - **Choice D: Only Amateur Extra class operators**
     - This choice is incorrect because it unnecessarily restricts the eligibility to only Amateur Extra class operators, whereas Technician, General, and Advanced class operators are also eligible.

### Key Rule:

- **FCC Rule [97.201]:** The control operator of an auxiliary station must hold at least a Technician class license. This rule ensures that the operator has the necessary knowledge and skills to manage the station's operations effectively.

By understanding these rules, you can correctly identify who is eligible to be a control operator of an auxiliary station and why certain license classes are required.