During a radio transmission, why is it important to avoid speaking directly into the microphone?

When speaking directly into the microphone, the sound waves can create distortion, impacting the quality of the transmitted audio. This distortion can lead to the receiver having difficulty understanding the message clearly. Proper microphone techniques, such as speaking at an appropriate angle and distance, help ensure that the audio signal remains clear and comprehensible. In radio communications, which are crucial in emergency services, maintaining clarity helps avoid misunderstandings during critical operations. This focus on preserving the integrity of the signal is essential for effective communication among firefighters and other responders.