Which step is necessary to broadcast from CR2?

To successfully broadcast from CR2, switching under the desk at CR1 is an essential step. This action typically involves enabling a connection or activating a certain setting that allows the studio equipment at CR2 to communicate with the broadcasting system. This procedure is crucial because it ensures that the signal and control systems are properly aligned, facilitating a seamless transmission process.

The other options, while related to various operational tasks in the studio, do not directly address the necessary action that enables broadcasting specifically from CR2. For instance, turning on the studio lights sets the environment for the broadcast but does not influence the technical capability to transmit audio or video. Similarly, starting the main transmitter is vital for the overall broadcasting activity but is not a direct requirement for CR2’s specific operational readiness. Lastly, using the emergency backup system is relevant in specific circumstances, primarily concerning power outages or equipment failures, but it is not a routine step needed for broadcasting from CR2 under normal conditions. Thus, switching under the desk at CR1 is the critical step that must be performed to ensure that broadcasting can commence from CR2.