*Question E1D10:
[97.211] Which amateur stations are eligible to be telecommand stations of space stations, subject to the privileges of the class of operator license held by the control operator of the station?*  

*Correct Answer is  B: Any amateur station so designated by the space station licensee*  

### AI Response: (may contain errors)  

The correct answer to the question about which amateur stations are eligible to be telecommand stations of space stations is:

**B: Any amateur station so designated by the space station licensee.**

### Explanation of the Correct Answer:
- **Space Station Licensee Designation**: The control operator of a space station has the authority to designate which amateur stations can send telecommands to that station. This means that only those stations specifically approved by the space station's licensee can operate in this capacity, ensuring that the control of the space station remains secure and regulated.

### Why the Other Choices are Incorrect:
- **A: Any amateur station approved by AMSAT**: While AMSAT (the Radio Amateur Satellite Corporation) plays a significant role in amateur satellite operations, it does not have the authority to designate telecommand stations. The designation must come from the space station licensee, not AMSAT.

- **C: Any amateur station so designated by the ITU**: The International Telecommunication Union (ITU) sets international regulations for radio communications but does not designate specific amateur stations for telecommand operations. This designation is a responsibility of the space station's licensee.

- **D: All these choices are correct**: Since options A and C are incorrect, this choice cannot be correct either.

### Summary:
- Only the space station licensee can designate which amateur stations are eligible for telecommand operations. This ensures proper control and compliance with regulations.

### Useful Rules of Thumb:
- Always refer to the specific authority (in this case, the space station licensee) for designations related to telecommand operations.
- Understand the roles of organizations like AMSAT and the ITU, but remember that they do not have the authority to designate operational permissions for specific stations.