What are two types of radio station?

• A. Control and Substation
• B. Transmitter and Receiver
• C. Local and Remote
• D. Primary and Secondary

Answer: (A)

The idea being tested is how a radio system is organized into different roles, not just hardware parts. In many networks, one type of station is the control station, which coordinates the system, sets operating parameters, and directs traffic. The other type is the substation, which handles the actual edge operations or relay tasks closer to the field. Seeing the network as centralized control plus distributed execution makes sense for managing many users and keeping commands consistent across the system. The other options describe components or locations rather than distinct station roles: a transmitter and receiver are parts of a station, not two types of stations; local and remote describe positions, not roles; primary and secondary imply priority but aren’t standard station types in this context.