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Partyline: How does the Encore PL IFB system operate?

Partyline: How does the Encore PL IFB system operate?

Apr 06, 2019

During the production of a program for transmission or recording, a director or producer frequently needs to cue the performing talent. This is done using Interrupt FoldBack (IFB), a type of closed-circuit intercom for sending program and cue audio on “IFB” lines for the talent to monitor. The IFB line carries three signals: program audio, cue audio, and the dip or mute control. See the signal flow diagram below. Electronic control allows the director to interrupt the program signal when addressing the talent. IFB communications are one-way only from an access location to the selected talent position.











The simplest stand-alone system consists of a PIC-4704, an MA-704, a PS-702 for power, and one to four TR-50 talent receivers. This system will permit cuing of one to four talent positions from only one access location.












See the PIC-4707 manual for more information

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