*Question G1B07:
[97.113(a)(4)] What are the restrictions on the use of abbreviations or procedural signals in the amateur service?*  

*Correct Answer is  B: They may be used if they do not obscure the meaning of a message*  

### AI Response: (may contain errors)  

In the context of amateur radio, understanding the use of abbreviations and procedural signals is important for effective communication. 

### Correct Answer: B
**Explanation:**
- The correct answer is **B: They may be used if they do not obscure the meaning of a message**. This means that while you can use abbreviations and procedural signals (like "Q" signals), you must ensure that they do not confuse the recipient or make the message unclear. The goal is to maintain clarity in communication, which is essential in amateur radio operations.

### Why the Other Choices are Incorrect:
- **A: Only “Q” signals are permitted**  
  This is incorrect because while "Q" signals are commonly used, they are not the only type of abbreviation allowed. Other abbreviations can be used as long as they do not obscure the message.

- **C: They are not permitted**  
  This is incorrect because the use of abbreviations and procedural signals is allowed, provided they maintain clarity. Prohibiting them entirely would hinder effective communication.

- **D: They are limited to those expressly listed in Part 97 of the FCC rules**  
  This is incorrect because Part 97 does not limit the use of abbreviations to only those listed. It allows for a broader use as long as clarity is maintained.

### Summary:
- Abbreviations and procedural signals can enhance communication in amateur radio, but they must be used judiciously to avoid confusion. Always prioritize clarity in your messages.