*Question T4B09:
How is a specific group of stations selected on a digital voice transceiver?*  

*Correct Answer is  C: By entering the group’s identification code*  

### AI Response: (may contain errors)  

To select a specific group of stations on a digital voice transceiver, the correct method is:

**Correct Answer: C: By entering the group’s identification code**

### Explanation of the Correct Answer:
- **Group Identification Code**: Digital voice transceivers often use a specific code to identify and connect to a particular group of stations. This code ensures that only stations with the same identification code can communicate with each other, allowing for private or group conversations.

### Why the Other Choices are Incorrect:
- **A: By retrieving the frequencies from transceiver memory**: 
  - This option refers to accessing stored frequencies, which does not specifically select a group of stations. It merely allows the user to tune to a frequency but does not filter or identify a group.

- **B: By enabling the group’s CTCSS tone**: 
  - CTCSS (Continuous Tone-Coded Squelch System) is used to reduce interference by allowing only signals with a specific tone to be heard. However, it does not select a group of stations in digital voice communication, as it is primarily used in analog systems.

- **D: By activating automatic identification**: 
  - Automatic identification typically refers to systems that automatically identify stations or users, such as Automatic Packet Reporting System (APRS) or similar. This does not involve selecting a specific group but rather identifying stations.

### Summary:
- The correct method to select a specific group of stations on a digital voice transceiver is by entering the group's identification code. This ensures that communication is limited to those stations that share the same code, providing a secure and organized communication channel.