*Question G1A03:
[97.305] On which of the following bands is image transmission prohibited?*  

*Correct Answer is  B: 30 meters*  

### AI Response: (may contain errors)  

The correct answer to the question about which band prohibits image transmission is **30 meters**. Here's a breakdown of why this is the case and why the other options are incorrect:

### Explanation of the Correct Answer (30 meters)
- **30 meters** is a unique band in amateur radio that is designated for digital modes and CW (Continuous Wave) only. The regulations specifically prohibit image transmission (such as SSTV or other visual modes) on this band to minimize interference and maintain the integrity of the communication.

### Explanation of the Incorrect Answers
- **160 meters**: This band allows various modes of communication, including voice and image transmission. There are no specific prohibitions against image transmission on this band.
  
- **20 meters**: This band is also open to multiple modes, including voice, digital, and image transmissions. There are no restrictions on image transmission here.

- **12 meters**: Similar to the 20-meter band, the 12-meter band permits various modes of operation, including image transmission. There are no prohibitions against it.

### Summary
- **30 meters**: Prohibited for image transmission (only CW and digital modes allowed).
- **160 meters, 20 meters, 12 meters**: All allow image transmission.

This understanding of band regulations is crucial for the Extra Class exam and helps ensure compliance with FCC rules while operating on amateur radio frequencies.