*Question T7A02:
What is a transceiver?*  

*Correct Answer is  A: A device that combines a receiver and transmitter*  

### AI Response: (may contain errors)  

A transceiver is defined as a device that combines both a transmitter and a receiver into a single unit. This allows for two-way communication, as the device can send and receive signals.

### Explanation of the Correct Answer:
- **Correct Answer: A**  
  A transceiver integrates the functions of both transmitting and receiving radio signals. This is essential for amateur radio operations, as it simplifies the equipment needed for communication.

### Explanation of the Incorrect Answers:
- **B: A device for matching feed line impedance to 50 ohms**  
  This describes an **antenna tuner** or **matching network**, which is used to ensure that the impedance of the antenna system matches the feed line, typically 50 ohms for most amateur radio equipment. It does not combine transmission and reception functions.

- **C: A device for automatically sending and decoding Morse code**  
  This refers to a **keyer** or **decoder**, which is a separate device that can send and interpret Morse code. While it may be used with a transceiver, it does not perform the functions of both transmitting and receiving.

- **D: A device for converting receiver and transmitter frequencies to another band**  
  This describes a **frequency converter** or **upconverter/downconverter**, which changes the frequency of signals but does not inherently combine transmission and reception capabilities.

### Summary:
- A transceiver is essential for two-way communication in amateur radio, combining both transmitter and receiver functions into one device.
- Other options describe different types of equipment that serve specific purposes but do not fulfill the definition of a transceiver. 

Understanding these distinctions is crucial for the Extra Class exam and practical amateur radio operations.