*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)  

To understand the rules regarding third-party communications while a station is automatically controlled, let's break down the correct answer and the reasoning behind it.

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

#### Explanation:
- **Third-party communications** refer to the transmission of messages on behalf of someone else who is not a licensed operator.
- The FCC regulations allow third-party communications only under specific conditions. When a station is automatically controlled (like a remote station), it can only transmit third-party communications when using RTTY (Radio Teletype) or data emissions. This is because these modes can be more easily monitored and controlled, ensuring compliance with regulations.

### Why the Other Choices are Incorrect:
- **A: Never**
  - This is incorrect because there are specific situations (like RTTY or data emissions) where third-party communications are allowed, as stated in the regulations.
  
- **C: Only when transmitting SSB or CW**
  - This is incorrect because SSB (Single Sideband) and CW (Continuous Wave) modes do not permit third-party communications when the station is automatically controlled. The regulations specifically limit this to RTTY and data modes.
  
- **D: On any mode approved by the National Telecommunication and Information Administration**
  - This is misleading. While the NTIA does approve certain modes, the specific allowance for third-party communications under automatic control is limited to RTTY and data emissions, not any mode.

### Summary:
- **Key Rule**: Third-party communications are allowed only when transmitting RTTY or data emissions while the station is automatically controlled.
- **Regulatory Reference**: This is outlined in FCC rules, specifically under sections 97.221(c)(1) and 97.115(c).

This understanding is crucial for the Extra Class exam and for operating within the legal framework of amateur radio.