Which component is NOT part of a radio system?

In a radio system, a transmitter, receiver, and antenna are essential components that work together to facilitate communication. The transmitter is responsible for converting electrical signals into radio waves, which are then sent out into the air. The receiver picks up these radio waves and converts them back into electrical signals, allowing the information to be processed or heard. The antenna plays a critical role by transmitting and receiving these radio waves, often enhancing the range and quality of the signal.

The reflector, however, is not a standard component in traditional radio systems. While reflectors can be part of more specialized setups, such as in radar or satellite communications, they are not universally recognized as a fundamental element required for basic radio operations. Therefore, identifying the reflector as not being a part of a standard radio system aligns with an understanding of the essential components involved in radio communication.