*Question G1E04:
[97.13(b), 97.303, 97.311(b)] Which of the following conditions require a licensed amateur radio operator to take specific steps to avoid harmful interference to other users or facilities?*  

*Correct Answer is  D: All these choices are correct*  

### AI Response: (may contain errors)  

To understand why the correct answer is "All these choices are correct," let's break down each option and the relevant regulations.

1. **Why the correct answer is correct:**
   - All the conditions listed in the choices require a licensed amateur radio operator to take specific steps to avoid harmful interference. This is mandated by FCC regulations to ensure that amateur operations do not disrupt other services or users.

2. **Why the other choices are incorrect:**
   - **A: When operating within one mile of an FCC Monitoring Station**  
     - This is correct because operators must avoid causing interference to monitoring stations, which are critical for ensuring compliance with regulations.
   
   - **B: When using a band where the Amateur Service is secondary**  
     - This is also correct. In secondary allocations, amateur operators must yield to primary users and take steps to avoid interference.
   
   - **C: When a station is transmitting spread spectrum emissions**  
     - This is correct as well. Operators using spread spectrum must ensure that their emissions do not interfere with other users, as spread spectrum can occupy a wider bandwidth.

3. **Useful rules of thumb:**
   - Always be aware of your operating environment and the potential for interference.
   - Familiarize yourself with the band plans and regulations for the frequencies you are using, especially in shared or secondary allocations.
   - Monitor your signal and be prepared to adjust your operation if you receive reports of interference.

In summary, all the choices reflect situations where an amateur operator must take care to avoid causing harmful interference, making "All these choices are correct" the right answer.