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Ryerson recruited a young communications lawyer, Newton N. Irving B. Harris , Henry W. McCarter , Jr. Guthman have served as chairman of the board for the public broadcaster in subsequent decades.
Guthman, a member of the Polk Brothers family of Chicago, is the current chairman of the board, having served in that post since October Minow stated that the only really important decision that he made during his tenure as chair of WTTW was the recruitment of William J.
McCarter, Jr. McCarter developed the concept of the political roundtable that is now a staple of television news.
Programs from "TV College", covering college subjects, were also shown on weekdays. In the late s and early s, WTTW was used during the overnight hours as a test vehicle in the development of stereophonic sound for television audio broadcasts.
While WGN-TV's analog transmitter was located atop the John Hancock Center at the time, allowing for engineers to almost immediately thwart the video hacker by changing the studio-to-transmitter frequency, WTTW's transmitter was located atop the Sears Tower now the Willis Tower , which made it harder to stop the hacker before the interruption voluntarily concluded after almost two minutes.
In , WTTW eliminated the position of year company veteran Joanie Bayhack, who had been senior vice president of communications and corporate partnerships.
WTTW has long been a pioneer in many technical aspects of television broadcasting, particularly in broadcast audio transmission.
The station, in particular, participated in the trend of pop music-focused programs on television during the early s a few of which were also simulcast on local FM radio stations.
However, stereo recording equipment for television production did not exist at that time. Because of this, WTTW engineers chose to modify existing Ampex quadruplex recorders to provide a stereo medium in sync with the video portion of the program.
This innovation earned the station's staff a local Technical Emmy Award in Further refinements to this system resulted in improvements to both frequency response and noise reduction , and eventually led to the ability to edit stereo audio as the video was being edited electronically.
Dolby Laboratories noise reduction technology Type C, and then Type A was introduced as the staff was driven to make improvements in the audio specifications.
WTTW began syndicating Made in Chicago to other public television stations under the new title Soundstage , with the first official taping of that program in June featuring Jim Croce.
In , WTTW management was approached by a startup company called Telesonics with an idea to develop an audio system for television broadcasts that used a mono-compatible, stereo audio channel.
Around this time, the Sears Tower had been completed and WTTW became one of the first broadcasters to move its transmitter facilities atop the new building; WTTW had broadcast from a temporary antenna as the now familiar twin towers that adorn the top of the building had not yet been completed.
The station's digital channel is multiplexed :. In May , WTTW downgraded the resolution of its main channel from i to p , which the station had previously transmitted its high definition content in prior to September , during which time it downconverted HD content provided by PBS from their native i format.
From the sign-on of its digital signal in until , WTTW branded its main digital channel on In September , digital channel On March 30, , WTTW shut down its analog signal, over VHF channel 11, on June 12, , the official date in which full-power television stations in the United States transitioned from analog to digital broadcasts under federal mandate.
The station's digital signal continued to broadcast on its pre-transition UHF channel The "WTTW" callsign was also officially transferred from the now-defunct analog channel 11 to digital channel 47, with the "WTTW-DT" callsign used to identify digital channel 47 during the pre-transition era officially being discontinued.
Programming on WTTW is funded in part by financial support of viewers and by other not-for-profit organizations such as the Corporation For Public Broadcasting.
In addition, WTTW is one of the few public television stations that regularly produce or present national public television programming.
Its most prominent productions include political discussion program The McLaughlin Group and the music program Soundstage.
The most well-known program ever to have been originated by WTTW was Sneak Previews , the first movie review show to air on television. In January , WTTW produced a new movie review program created by Ebert, Ebert Presents: At the Movies , which was hosted by Christy Lemire and Ignatiy Vishnevetsky , with Ebert himself hosting a segment called "Roger's Office"; the program lasted one season, before being cancelled due to funding constraints and the subsequent death of Ebert.
The program began in as a half-hour panel interview program with local broadcast journalist John Callaway , but was later expanded to an hour-long show with the addition of various feature segments including arts and restaurant reviews.
The series Chicago Matters —which is underwritten by the Chicago Community Trust —is considered to perhaps be the preeminent local journalism collaboration in the United States, involving television, radio and print, and dialogue at the highest levels of articulation.
The station has produced hundreds of significant arts programs, highlighting the Chicago Symphony Orchestra , the Lyric Opera of Chicago and the Ravinia Festival.
In addition, WTTW features documentaries hosted by Geoffrey Baer , spotlighting the history and culture of various parts of the Chicago area.
These programs' popularity has often resulted in a high volume of monetary pledges to the station. From Wikipedia, the free encyclopedia.
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Unsourced material may be challenged and removed. PBS member station in Chicago. Television station in Illinois, United States. Sister stations.
Former affiliations. Call sign meaning. Chicago Tribune. Retrieved December 8, Federal Communications Commission. March 16, Retrieved April 21, April 20, Für jeden Ort der Welt bieten wir kostenlos eine 15 Tage Wettervorhersage.
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