The match then ended sooner than expected but Rather was gone. Open tennis match threatened to delay the start of his news broadcast. On September 11, 1987, Dan Rather walked off the set of the CBS Evening News when a late running U.S. īroadcast stations can use programmable devices known as "silence sensors", "off air alarms" or "silence monitors" that will sound an alarm and alert personnel if dead air persists more than a few seconds. In the U.S., dead air, if prolonged and occurring without permission, is an actionable offense that can result in fines from the Federal Communications Commission (FCC). Such a broadcast transmitter is said to have gone " dark". "closed", " signed off" or " off the air", by a control operator. The term "dead air" does not refer to a broadcast transmitter that is intentionally shut down, i.e. Moreover, dead air may impact advertising revenue if it affects the airplay of paid commercials. Among professional broadcasters, dead air is considered one of the worst things that can occur. However, the term "dead air" is most often used in cases where program material comes to an unexpected halt, either through operator error or technical malfunction. Television directors may use the command "fade to black" or "to black" to indicate a momentary transition to a completely black image.
In radio, the result is silence, and in television, the result is a silent black or gray screen. Technically, a carrier wave is still transmitting. In television broadcasting, the term denotes the absence of both audio and video program material. Dead air occurs in radio broadcasting when no audio program is transmitted for an extended period of time, usually more than a few seconds.
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