*Question G4A10:
What is the function of an electronic keyer?*  

*Correct Answer is  B: Automatic generation of dots and dashes for CW operation*  

### AI Response: (may contain errors)  

The correct answer to the question about the function of an electronic keyer is:

**B: Automatic generation of dots and dashes for CW operation.**

### Explanation of the Correct Answer:
- An electronic keyer is a device used in Morse code (CW) operation that automatically generates the timing for dots and dashes. 
- It allows the operator to send Morse code more efficiently by controlling the length of the signals, which is crucial for clear communication.

### Why the Other Choices are Incorrect:
- **A: Automatic transmit/receive switching**  
  This function is typically handled by a transceiver or a separate device known as a T/R switch, not by an electronic keyer.

- **C: To allow time for switching the antenna from the receiver to the transmitter**  
  This is not a function of an electronic keyer. Antenna switching is managed by other equipment, such as a relay or a manual switch.

- **D: Computer interface for PSK and RTTY operation**  
  While some electronic keyers may have interfaces for digital modes, their primary function is not to interface with computers for PSK (Phase Shift Keying) or RTTY (Radio Teletype) operations. This is typically done by sound card interfaces or dedicated digital mode interfaces.

### Summary:
- An electronic keyer is specifically designed to assist in sending Morse code by generating the timing for dots and dashes, making it easier for operators to communicate effectively in CW mode.