What are the four basic characteristics of a receiver?

The four basic characteristics of a receiver, which are sensitivity, noise, selectivity, and fidelity, are essential for evaluating how effectively a receiver can process incoming signals.

Sensitivity refers to the receiver's ability to detect weak signals. This characteristic is crucial as it determines the minimum signal level that can be reliably received. In practical terms, a more sensitive receiver can capture faint signals that others cannot, allowing for better performance in environments with noise or interference.

Noise is the unwanted electrical signals that can disguise or distort the desired signal. A good receiver should minimize noise while enhancing the intended signal, which improves the overall clarity and quality of the audio or information being transmitted.

Selectivity is the ability of a receiver to isolate a specific signal or frequency while filtering out others. This is particularly important in areas where multiple signals might overlap within the same frequency band. High selectivity helps ensure that the receiver picks up the desired station or signal without interference from nearby channels.

Fidelity refers to the accuracy with which the receiver reproduces the original signal. A high-fidelity receiver will deliver sound or data that closely matches the source, preserving the quality of the audio or information being transmitted, which is particularly important in applications like music broadcasting or data communication.

Understanding these characteristics helps technicians