*Question T1B05:
[97.305(c)] How may amateurs use the 219 to 220 MHz segment of 1.25 meter band?*  

*Correct Answer is  D: Fixed digital message forwarding systems only*  

### AI Response: (may contain errors)  

The correct answer to the question about the 219 to 220 MHz segment of the 1.25 meter band is:

**D: Fixed digital message forwarding systems only.**

### Explanation of the Correct Answer:
- The 219 to 220 MHz segment is designated for specific uses in amateur radio, primarily for fixed digital message forwarding systems. This means that operators can use this frequency range to send and receive digital messages in a fixed station setup, which is essential for efficient communication in various applications.

### Why the Other Choices are Incorrect:
- **A: Spread spectrum only**  
  - While spread spectrum techniques are allowed in amateur radio, the 219 to 220 MHz segment is not exclusively designated for spread spectrum use. This segment is specifically allocated for fixed digital message forwarding systems.

- **B: Fast-scan television only**  
  - Fast-scan television (also known as ATV) is a mode of operation that is not permitted in the 219 to 220 MHz segment. ATV typically operates in other frequency ranges allocated for that purpose.

- **C: Emergency traffic only**  
  - Although amateurs can use various frequencies for emergency communications, the 219 to 220 MHz segment is not specifically reserved for emergency traffic. It is primarily for fixed digital message forwarding systems.

### Summary:
- The 219 to 220 MHz segment is specifically allocated for fixed digital message forwarding systems, making option D the correct choice. The other options do not align with the designated uses for this frequency range. 

This understanding is crucial for the Extra Class exam, as it highlights the importance of knowing frequency allocations and their specific uses in amateur radio.