What is the primary purpose of a receiver in a radio system?

The primary purpose of a receiver in a radio system is to capture and decode radio frequency signals into audio or data. This process involves several key functions: first, the receiver picks up incoming radio waves using its antenna. Then, it converts these waves from radio frequency (RF) to baseband signals, which are the original audio or data signals.

By demodulating the RF signals, the receiver extracts the information encoded in them, allowing users to hear sounds or access data that were transmitted over the air. This decoding is essential for the functionality of communication systems, as it enables the information to be usable after transmission.

While amplifying weak signals is a role that a receiver can perform, it's not the primary purpose. Amplification happens as part of the process to enhance the signal for better decoding, but capturing and decoding remains the core function. Similarly, modulation is associated with the transmission process rather than reception. Hence, capturing and decoding is fundamental to establishing effective communication within radio systems.