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It distributes The McLaughlin Group to public television stations independently of PBS.
On November 22,1987 at 11:00pm WTTW's broadcast signal was hijacked during transmission of the Doctor Who serial Horror of Fang Rock by an unknown person wearing a Max Headroom mask for approximately 90 seconds. This was the second incident that night involving the interruption of a television station's broadcast signal. Approximately 2 hours prior to the WTTW incident, Chicago Superstation WGN-TV Channel 9 has their broadcast interrupted by the same person during the sportscast on the 9 O'Clock News. WTTW whose transmitter is atop the Sears Tower was unable to thwart the video intruder unlike WGN whose transmitter is atop the John Hancock building who cut off the intruder's signal almost immediately.