What is the required channel for directing a crane using voice signals?

Voice signals for directing a crane require the use of a dedicated channel to ensure clear and unambiguous communication between the operator and the signal person. A dedicated channel minimizes interference from other communications, which is crucial in a dynamic and potentially hazardous environment like a construction site. This channel should be specifically allocated for crane operations, allowing for consistent communication without the distractions or confusion that can arise from shared channels. By using a dedicated channel, teams can maintain a higher safety standard, as signals and instructions will be clearly understood and executed without the risk of errors caused by miscommunication.