What is the primary purpose of the Automatic Gain Control (AGC) in a transceiver?

The primary purpose of Automatic Gain Control (AGC) in a transceiver is to automatically adjust the receiver gain to optimal levels. This feature ensures that the audio output remains consistent in volume, regardless of variations in the signal strength being received. When signals vary in their strength due to distance, atmospheric conditions, or obstacles, AGC dynamically modifies the amplifier gain. This process enhances the overall listening experience by preventing the audio from being too weak during faint transmissions or too loud during strong signals, which could lead to distortion or clipping.

This function is critical for effective communication, as it allows the operator to focus on the content of the communication rather than constantly adjusting the volume or gain. Consequently, AGC contributes to clearer and more intelligible audio without requiring manual intervention by the user.