*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)  

In the context of amateur radio, image transmission refers to sending pictures or video signals. The FCC has specific regulations about where these types of transmissions are allowed.

1. **Why the correct answer is correct (30 meters):**
   - The 30-meter band (10.1 to 10.15 MHz) is unique because it is a narrow band with specific restrictions. According to FCC rules, image transmission is prohibited on this band. This is primarily due to the limited bandwidth and the need to avoid interference with other services.

2. **Why the other choices are incorrect:**
   - **160 meters (A):** Image transmission is allowed on the 160-meter band. This band is primarily used for voice and data communications, but image modes like SSTV (Slow Scan Television) are permitted.
   - **20 meters (C):** The 20-meter band is a popular band for various modes, including image transmission. It supports a wide range of activities, including voice, data, and image modes.
   - **12 meters (D):** Similar to the 20-meter band, the 12-meter band also allows image transmission. It is less crowded but still supports multiple modes, including image.

3. **Useful rules of thumb:**
   - Always check the specific band plan and FCC regulations for any restrictions on modes of transmission.
   - Remember that the 30-meter band has unique restrictions due to its narrow bandwidth and shared use with other services.

Understanding these regulations is crucial for operating within legal limits and avoiding interference with other services.