Which radio procedure is considered unacceptable?

Raising voice volume if a transmission is unclear is considered an unacceptable radio procedure because it can lead to further distortion or confusion in communication. In radio communications, clarity and accuracy are essential, and simply shouting or increasing volume may not improve understanding. Instead, standard practices recommend repeating messages for confirmation or using clear, concise language to ensure the message is transmitted correctly. Maintaining professionalism and composure is also critical in emergency situations; thus, clear communication techniques are emphasized over volume. Using standard call signs and repeating messages for clarity are effective strategies that contribute to safe and efficient operations within firefighting and emergency response scenarios.