Master control
(重定向自Master control operator)

Master control is the technical hub of a broadcast operation common among most over-the-air television stations and television networks. It is distinct from a production control room (PCR) in television studios where the activities such as switching from camera to camera are coordinated. It is also vastly different from the studio where the talent are located. A transmission control room (TCR) is usually smaller in size and is a scaled down version of centralcasting.