*Question G1A02:
[97.305] On which of the following bands is phone operation prohibited?*  

*Correct Answer is  B: 30 meters*  

### AI Response: (may contain errors)  

The correct answer to the question is **30 meters**. Here's the explanation:

1. **Why the correct answer is correct:**
   - The 30-meter band (10.100 to 10.150 MHz) is designated for CW (Continuous Wave) and digital modes only. Phone operation, which includes voice communication, is prohibited on this band. This restriction is in place to minimize interference and maintain the integrity of the band for weak signal work.

2. **Why the other choices are incorrect:**
   - **A: 160 meters**: Phone operation is allowed on the 160-meter band (1.8 to 2.0 MHz), although it is primarily used for CW and some digital modes.
   - **C: 17 meters**: Phone operation is permitted on the 17-meter band (18.068 to 18.168 MHz), and it is commonly used for voice communication.
   - **D: 12 meters**: Phone operation is also allowed on the 12-meter band (24.890 to 24.930 MHz), where voice communication is frequently used.

3. **Useful rules of thumb:**
   - Always check the band plan and regulations for each amateur band to understand the allowed modes of operation.
   - Remember that certain bands have specific restrictions, especially regarding the types of emissions allowed (e.g., CW, digital, phone).

This information is crucial for understanding band usage and ensuring compliance with amateur radio regulations.