*Question E1C05:
[97.221(c)(1), 97.115(c)] Under what situation may a station transmit third party communications while being automatically controlled?*  

*Correct Answer is  B: Only when transmitting RTTY or data emissions*  

### AI Response: (may contain errors)  

Under FCC rules, third-party communications refer to messages sent on behalf of someone who is not the control operator of the station. When a station is automatically controlled, it means that the station operates without a control operator being present at the control point.

### Explanation:

1. **Correct Answer: B - Only when transmitting RTTY or data emissions**

   - **Why it's correct:**  
     According to FCC rules, a station may transmit third-party communications while being automatically controlled only when using RTTY (Radio Teletype) or data emissions. This is specified in Part 97.221(c)(1) of the FCC rules, which allows for automatic control of stations transmitting RTTY or data emissions on certain frequencies.

2. **Why the other choices are incorrect:**

   - **A: Never**  
     This choice is incorrect because the FCC does allow third-party communications under automatic control, but only for specific modes like RTTY and data emissions.

   - **C: Only when transmitting SSB or CW**  
     This choice is incorrect because SSB (Single Sideband) and CW (Continuous Wave) are not permitted modes for automatically controlled third-party communications. These modes typically require a control operator to be present.

   - **D: On any mode approved by the National Telecommunication and Information Administration**  
     This choice is incorrect because the NTIA does not approve modes for amateur radio operations. The FCC regulates amateur radio, and the rules specifically limit automatically controlled third-party communications to RTTY and data emissions.

### Key Rule:

- **FCC Rule Reference:**  
  Part 97.221(c)(1) allows for automatic control of stations transmitting RTTY or data emissions, which can include third-party communications under specific conditions.

Understanding these rules is crucial for ensuring compliance with FCC regulations when operating an amateur radio station under automatic control.