*Question T4A04:
How are the transceiver audio input and output connected in a station configured to operate using FT8?*  

*Correct Answer is  B: To the audio input and output of a computer running WSJT-X software*  

### AI Response: (may contain errors)  

To understand how the transceiver audio input and output are connected in a station configured to operate using FT8, let's analyze the correct answer and the other options.

### Correct Answer: 
**B: To the audio input and output of a computer running WSJT-X software**

- **Explanation**: 
  - FT8 is a digital mode that requires software to encode and decode the audio signals. WSJT-X is the primary software used for FT8 operations. 
  - In this setup, the transceiver's audio output is connected to the computer's audio input, allowing the computer to receive the audio signals from the transceiver. 
  - Conversely, the computer's audio output is connected to the transceiver's audio input, enabling the computer to send encoded signals to the transceiver for transmission.

### Why the Other Choices are Incorrect:

- **A: To a computer running a terminal program and connected to a terminal node controller unit**
  - **Explanation**: While terminal node controllers (TNCs) can be used for digital modes, FT8 specifically uses software like WSJT-X directly on a computer. This option does not accurately describe the typical FT8 setup.

- **C: To an FT8 conversion unit, a keyboard, and a computer monitor**
  - **Explanation**: This option suggests the use of a specific conversion unit, which is not standard for FT8. FT8 operates through software on a computer without the need for a separate conversion unit.

- **D: To a computer connected to the FT8converter.com website**
  - **Explanation**: This option implies a reliance on a web-based service, which is not how FT8 is typically operated. FT8 requires local software (like WSJT-X) to handle the audio processing and digital signal encoding/decoding.

### Summary:
- The correct connection for FT8 operation is through WSJT-X software, which directly interfaces with the transceiver's audio input and output.
- Understanding the specific software and hardware requirements for digital modes like FT8 is crucial for successful operation.

### Useful Rule of Thumb:
- Always ensure that your digital mode software is properly configured to interface with your transceiver's audio ports for effective communication.