Rack mountable, PLC controller for customer specific application of RF switches for broadcast transmitter selection and directional antenna pattern control. Controller includes fail-safe control logic, redundant power supplies, local and remote command and status, and interlock with broadcast chain. Design permits either 24VDC or direct 110/220 VAC control of RF contactors, coaxial, or vacuum switches. Transmitter power level select and interlocking also available. Option for web accessible control.