*Question E1F06:
[1.931] Under what circumstances might the FCC issue a Special Temporary Authority (STA) to an amateur station?*  

*Correct Answer is  A: To provide for experimental amateur communications*  

### AI Response: (may contain errors)  

The correct answer to the question about when the FCC might issue a Special Temporary Authority (STA) to an amateur station is:

**A: To provide for experimental amateur communications.**

### Explanation of the Correct Answer:
- **Special Temporary Authority (STA)** is granted by the FCC to allow amateur operators to conduct experimental communications that may not fit within the standard rules. This can include testing new equipment, technologies, or methods of communication that require temporary permission.

### Why the Other Choices are Incorrect:
- **B: To allow use of a special event call sign**  
  - Special event call signs are typically issued by the FCC for specific events and do not require an STA. They are part of the normal licensing process.

- **C: To allow a VE group with less than three VEs to administer examinations in a remote, sparsely populated area**  
  - While the FCC does have provisions for remote examinations, this situation does not require an STA. The rules for administering exams are separate from the STA process.

- **D: To allow a licensee who has passed an upgrade exam to operate with upgraded privileges while waiting for posting on the FCC database**  
  - This situation is covered under the concept of "immediate operating privileges" after passing an exam. The FCC allows operators to use their upgraded privileges without needing an STA while waiting for the database update.

### Summary:
- The STA is specifically for experimental purposes, making **A** the only correct choice. The other options relate to standard procedures or rules that do not involve the need for a temporary authority. 

This understanding is crucial for the Extra Class exam, as it highlights the specific regulatory framework governing amateur radio operations.