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  • The principal characters in the Tom Mix radio program at...

    Russel Hamm, Chicago Tribune

    The principal characters in the Tom Mix radio program at WGN radio on April 24, 1946. The cast, in western costumes for a broadcast from "Dobie County", are Don Gordon, from left, announcer and narrator, Jane played by Jane Webb, Sheriff Mike Shaw played by Leo Curley, Wash played by Forest Lewis, and Tom Mix played by Curley Bradley.

  • According to the Tribune, "Two 'dollies' try out a two-man...

    Chicago Tribune historical photo

    According to the Tribune, "Two 'dollies' try out a two-man dolly unit on which the camera can be raised, lowered, and moved," circa April 4, 1948.

  • Performers sing "Merry Widow" for WGN radio, circa Oct. 4,...

    Chicago Tribune historical photo

    Performers sing "Merry Widow" for WGN radio, circa Oct. 4, 1941

  • June Baker, WGN's household advisor, seated on left, and her...

    Chicago Tribune historical photo

    June Baker, WGN's household advisor, seated on left, and her staff of experts who present on Miss Baker's program every week day at 2 p.m. over WGN radio, circa April 22, 1934. The experts on Miss Baker's programs conduct Tribune editorial columns about the various activities of homemaking. Left to right, seated: June Baker, general household expert, and Helen Bartlett, etiquette. Standing are Louise Bargelt, remodeling and home building; Nancy Cabot, needlework; Edith Weigle, furniture; Mary Meade, cookery; and Rhea Seeger, fashions.

  • The WGN transmitting plant, completed in 1926, near Elgin, Ill....

    Chicago Tribune historical photo

    The WGN transmitting plant, completed in 1926, near Elgin, Ill. Photo circa, Oct. 11, 1932.

  • The Theater in the Air cast and their audience are...

    Chicago Tribune historical photo

    The Theater in the Air cast and their audience are in WGN's newly remodeled studio #1-A in January 1951. Both AM and television programs originated from this studio. Note the splayed ceiling on the stage designed for maximum sound projection into the audience, the dual plate glass windows of the control booth, and the client's booth above are set in at an angle to prevent unwanted sound and light reflections.

  • Thousands of owners of radiophone receiving sets in a 500...

    Chicago Tribune historical photo

    Thousands of owners of radiophone receiving sets in a 500 mile radius of Chicago "listen in" nightly to a musical and news bulletin service sent from atop the Commonwealth Edison building by the Westinghouse Electric and Mfg. Co. and The Chicago Tribune in 1921. The photograph is of the studio from which the messages are transmitted. From left to right are Edwin Stanley Seder, pianist; Elsa Harthau Arendt, soloist; and W. Evans, operator.

  • A long line of women wait to enter the WGN...

    Chicago Tribune historical photo

    A long line of women wait to enter the WGN building on Michigan Avenue on June 6, 1940, for the opening program of the Women World Wide series. The broadcasts, given by Mrs. Ruth DeYoung Kohler, are concerned with women and their interests in the world events of today.

  • WGN-TV's North Side headquarters is pictured on May 8, 2017....

    Scott Olson / Getty Images

    WGN-TV's North Side headquarters is pictured on May 8, 2017. Should Sinclair Broadcasting's purchase of Tribune Media be approved, critics contend WGN would become Hunt Valley, Md.'s very own platform for a partisan agenda.

  • The finals of the Golden Gloves was the first scheduled...

    Chicago Tribune historical photo

    The finals of the Golden Gloves was the first scheduled televised show on WGN-TV with Jack Brickhouse, center at table, as the first voice at the Chicago Stadium on March 5, 1948.

  • A Girl Scout troop from Palatine learns about the operation...

    Chicago Tribune historical photo

    A Girl Scout troop from Palatine learns about the operation of WGN-TV studios during a tour given by guide Frank Kapanowski, circa Nov. 19, 1965.

  • WGN announcer Jack Brickhouse, reports from a boat with Fire...

    Chicago Tribune historical photo

    WGN announcer Jack Brickhouse, reports from a boat with Fire Chief Anthony J. Mullaney, James Gleason, Maintenance official; Commodore David Zimmerman, and Commissioner Michael J. Corrigan. No date.

  • The cornerstone of the new WGN building is set into...

    Chicago Tribune historical photo

    The cornerstone of the new WGN building is set into place on July 6, 1950 in Tribune square.

  • In this May 1, 2017, photo, the WGN Radio sign...

    Kiichiro Sato / AP

    In this May 1, 2017, photo, the WGN Radio sign appears on the side of Tribune Tower, in downtown Chicago. If the prposed deal goes through, Sinclair Broadcast Group would add WGN-AM 720 to four Seattle radio stations it already owns.

  • A WGN-TV mobile unit is parked outside Wrigley Field for...

    Chicago Tribune historical photo

    A WGN-TV mobile unit is parked outside Wrigley Field for a Cubs game, circa May 8, 1949.

  • The marquee on the Michigan Avenue WGN building welcomes the...

    Chicago Tribune historical photo

    The marquee on the Michigan Avenue WGN building welcomes the Shriners on July 17, 1958.

  • Flower Vocational High School student Esther Riff practices a cooking...

    Chicago Tribune historical photo

    Flower Vocational High School student Esther Riff practices a cooking demonstration for the WGN-TV program "Women's Magazine of the Air", circa Sept. 19, 1951.

  • A model of the post-war television studio is viewed at...

    Chicago Tribune historical photo

    A model of the post-war television studio is viewed at the Palmer House by G. William Lang, from left, WGN chief engineer; Frank P. Schreiber, WGN general manager; P. C. McCabe of the Austin company which built the model; and J. D. McLean of General Electric company's television equipment division on Aug. 28, 1944.

  • Teenager's dance to rock 'n' roll in the main studio...

    William Bender, Chicago Tribune

    Teenager's dance to rock 'n' roll in the main studio at WGN-TV during an hour-long radio show called the "Hi-Fi Club" on April 16, 1959.

  • Jemeniz Indians from New Mexico, on tour to sell defense...

    Chicago Tribune historical photo

    Jemeniz Indians from New Mexico, on tour to sell defense bonds, are shown with Bill Anson and Jess Kirkpatrick of WGN on March 25, 1942. The Indians were guests on the Elson and Anson program.

  • Talk show host Phil Donahue on the set of the...

    Chicago Tribune historical photo

    Talk show host Phil Donahue on the set of the "Donahue" show during the 1970's.

  • The sound effects machine as it appears from the rear...

    Chicago Tribune historical photo

    The sound effects machine as it appears from the rear to an operator during a broadcast on Aug. 28, 1936. Any sound, from the drop of a pin to the crash of a giant airplane, can be made by this $600 sound effects machine, specially built for WGN radio. It was the only one of its kind in the country in 1936.

  • Spencer Allen, seen here in 1953, was the first news...

    Chicago Tribune historical photo

    Spencer Allen, seen here in 1953, was the first news director for WGN-TV when they started in 1948. Allen had been a WGN Radio news reporter and writer since 1938.

  • Jack Brickhouse at the WGN-TV microphone during a White Sox...

    Chicago Tribune historical photo

    Jack Brickhouse at the WGN-TV microphone during a White Sox game, circa July 30, 1967.

  • Bob Newhart hams it up at the WGN-TV studio in...

    Chicago Tribune historical photo

    Bob Newhart hams it up at the WGN-TV studio in 1960.

  • Flying Officer Leonard Baldy, aerial observer of traffic for WGN,...

    Chicago Tribune historical photo

    Flying Officer Leonard Baldy, aerial observer of traffic for WGN, and his pilot, Richard Gilbert, plan a route to follow before taking off by helicopter from Meigs Field in Chicago, circa April 1959.

  • WGN-TV operated from the organ loft at the Chicago Stadium...

    Robert MacKay, Chicago Tribune

    WGN-TV operated from the organ loft at the Chicago Stadium during its first scheduled telecast at the Golden Gloves fights on March 5, 1948.

  • Angel Casey, Chicago model and radio actress, in front of...

    Chicago Tribune historical photo

    Angel Casey, Chicago model and radio actress, in front of the camera for WGN-TV, circa April 4, 1948.

  • William G. Nylen, from left, William G. Naef, and William...

    Chicago Tribune historical photo

    William G. Nylen, from left, William G. Naef, and William G. Nida take turns at the microphone at a meeting of the WGN club on April 10, 1941.

  • George Kudsk, right, WGN sound effects man, blows a whistle...

    Chicago Tribune historical photo

    George Kudsk, right, WGN sound effects man, blows a whistle from a famed steam boat, the Robert E. Lee, in the boiler room of the Tribune, circa Nov. 14, 1948. Its blast was heard during radio talk, "Steam Boat Years," by Col. Robert R. McCormick. At left is Lee Schinkten, radio engineer.

  • The WGN-TV studios next to Tribune Tower, shown here in...

    Chicago Tribune historical photo

    The WGN-TV studios next to Tribune Tower, shown here in 1955 before the station relocated to the Northwest Side.

  • Woodrow R. Crane is at the AM transmitter control panel...

    Chicago Tribune historical photo

    Woodrow R. Crane is at the AM transmitter control panel for WGN radio, circa July 23, 1939.

  • Ukulele playing disc jockey Eddie Hubbard in a promotional picture...

    Chicago Tribune historical photo

    Ukulele playing disc jockey Eddie Hubbard in a promotional picture for his show "Catalog Quiz" on WGN-TV, which premiered on Sept. 12, 1949.

  • The view from the 15th floor of the Medinah club...

    Chicago Tribune historical photo

    The view from the 15th floor of the Medinah club shows workmen swinging a derrick into place at the site of the new WGN radio station, just north of the Tribune Tower (shown in background), circa Sept. 25, 1934.

  • J. E. Faragan, program director for WGN-TV, explains the workings...

    Chicago Tribune historical photo

    J. E. Faragan, program director for WGN-TV, explains the workings of a television camera to Franklin Weinstein, from left, Glen Swanson, Robin Wright, Al Cohen, Roberta Zells, and Gail Gustafson of the Chicago Public Schools' radio workshop, circa Sept. 19, 1951.

  • Robert "Bob" Bell as Bozo the Clown in 1967.

    Chicago Tribune historical photo

    Robert "Bob" Bell as Bozo the Clown in 1967.

  • Members of the dramatic cast of "Carmen" as presented over...

    Chicago Tribune historical photo

    Members of the dramatic cast of "Carmen" as presented over WGN and the Mutual network are Betty Winkler as Carmen, Marvin Mueller as Escamillo, Elia Braca as Mercedes, and Willard Waterman as Pedro. The entire program was produced under the direction of William A. Bacher, seen on left, circa Nov. 25, 1941.

  • Illinois soldiers at Camp Forrest, Tullahoma, Tenn. piled up the...

    Chicago Tribune historical photo

    Illinois soldiers at Camp Forrest, Tullahoma, Tenn. piled up the record score of 18 runs in the WGN Mutual quiz, Play Ask-It Ball, when it was aired from camp. This picture shows a scene during the quiz. Master of Ceremonies Jack Brickhouse is at left, a soldier is playing theme music, and the Camp Forrest team is seated awaiting the call to action.

  • Ray Rayner as Oliver O. Oliver, right, is shown with...

    Chicago Tribune historical photo

    Ray Rayner as Oliver O. Oliver, right, is shown with Ringmaster Ned Locke, left, and Bob Bell as Bozo the Clown, center, during the WGN-TV produced show "Bozo's Circus," in 1967.

  • The view of studio 3A in the new WGN building....

    Chicago Tribune historical photo

    The view of studio 3A in the new WGN building. One of several similar rooms designed for individual artists and small musical groups, 3A floats on inflated cushions to eliminate all noise vibration. Bill O'Connor, announcer, is shown at the microphone, circa April 16, 1950.

  • A crowd listens to Marion Claire as she sang a...

    Chicago Tribune historical photo

    A crowd listens to Marion Claire as she sang a number on the balcony in the Nathan Hale Court after her regular broadcast on WGN, circa Aug. 4, 1942.

  • Throughout his career with WGN-TV, Rayner would play many characters,...

    Chicago Tribune historical photo

    Throughout his career with WGN-TV, Rayner would play many characters, including Sergeant Pettibone on the "Dick Tracy" show, Oliver O. Oliver on "Bozo's Circus," and eventually his own show "Rayner and His Friends."

  • A view of the floating television studio in WGN's building,...

    Chicago Tribune historical photo

    A view of the floating television studio in WGN's building, in Tribune Square, which began operations on Jan. 25, 1950. The studio is 34 by 52 by 22 feet and floats on inflated rubber bags. Air space is provided between the walls and the ceiling and the building proper to eliminate outside noise and vibrations. The cameramen were filming "Chicago Cooks with Barbara Barkley," one of televisions earliest homemakers.

  • Gabby Hartnett, left, and Charley Root do a pregame radio...

    Chicago Tribune historical photo

    Gabby Hartnett, left, and Charley Root do a pregame radio show on WGN before the Cubs' April 14, 1931, season opener at Wrigley Field.

  • Peppy Wonso of Agnes McDonald High School and Bob Dipper...

    Chicago Tribune historical photo

    Peppy Wonso of Agnes McDonald High School and Bob Dipper of Evergreen Park High dance for the television cameras on May 29, 1956, during Bandstand Matinee, a WGN-TV rock 'n' roll program.

  • Morrison Wood, writer and producer of the Chicago Tribune anniversary...

    Ray Gora, Chicago Tribune

    Morrison Wood, writer and producer of the Chicago Tribune anniversary radio series, talks to Art Hern, a bit player surrounded by the cast of the series at the WGN studio on March 24, 1947.

  • Frazier Thomas with the puppets Garfield Goose and Beauregard Burnside...

    Chicago Tribune historical photo

    Frazier Thomas with the puppets Garfield Goose and Beauregard Burnside III with Thomas' son Jeff, 5, behind the camera at WGN-TV studios, circa June 1958. Garfield Goose and Friends was a popular children's television show that aired from 1955 to 1976.

  • WGN producer William A. Bacher coaches soloist Igor Gorin during...

    Chicago Tribune historical photo

    WGN producer William A. Bacher coaches soloist Igor Gorin during the production of "The Student Prince", circa May 19, 1940, for Chicago Theater of the Air.

  • Engineers monitor the reception inside WGN's mobile unit at Illinois...

    Hardy Wieting, Chicago Tribune

    Engineers monitor the reception inside WGN's mobile unit at Illinois Street and the WGN building. The unit was put into operation for the opening of WGN-TV on April 4, 1948.

  • Sound technician Curtis France in WGN Studio #2, circa Oct....

    Chicago Tribune historical photo

    Sound technician Curtis France in WGN Studio #2, circa Oct. 3, 1941.

  • Steel framework for the new WGN studios as it neared...

    Chicago Tribune historical photo

    Steel framework for the new WGN studios as it neared completion, circa Jan. 4, 1935. An American flag was unfurled when the highest point on the steel construction was reached. The building is located just north of the Tribune Tower.

  • John Holbrook loses a bet and gets a pie in...

    Chicago Tribune historical photo

    John Holbrook loses a bet and gets a pie in the face while Colleen Moore, left, and Jess Kirkpatrick watch in Studio #2 at WGN on March 1, 1944.

  • Singer and actress Lena Horne in 1950, with WGN radio's...

    Chicago Tribune historical photo

    Singer and actress Lena Horne in 1950, with WGN radio's Fred Reynolds. Editors note: this image has white paint around Horne's face.

  • WGN radio stars choose up sides after leaving the studio...

    Chicago Tribune historical photo

    WGN radio stars choose up sides after leaving the studio to head to practice for a game with the WGN softball team to be played at Spencer Coals Field on Aug. 1, 1941. From left are, Lucy Gilman, actress in Painted Dreams, who'll be bat girl, Marlin Hurt, Gordon Vandover and Bud Vandover of Tom, Dick and Harry comedy team; Announcer Ed Allen, and, squatting, Attilio Baggiore, noted WGN tenor.

  • WGN-TV newsreel photographers Fred Giese, on the curb, and Leonard...

    Chicago Tribune historical photo

    WGN-TV newsreel photographers Fred Giese, on the curb, and Leonard Bartholomew, positioned on the car, shoot pictures in the Loop on March 22, 1948. This photo ran on April 4, 1948 with the announcement in the Tribune that WGN-TV would started its transmission the next day. Both Giese and Bartholomew were the first cameramen appointed to the eight man WGN-TV Newsreel staff. Bartholomew had been a veteran still photographer for the Tribune who earned the nickname "the man who's late for dinner."

  • "Bozo's Circus", a television program targeted to kids, became more...

    Chicago Tribune historical photo

    "Bozo's Circus", a television program targeted to kids, became more popular in Chicago than in any other television market. Bozo's original cast is shown here with Bob Bell as Bozo, in 1966.

  • Bob Bell, the actor who played Bozo the Clown, at...

    Chicago Tribune historical photo

    Bob Bell, the actor who played Bozo the Clown, at WGN-TV studios in Chicago in 1968.

  • Bob Bell as Bozo the Clown, left, and Ray Rayner...

    Chicago Tribune historical photo

    Bob Bell as Bozo the Clown, left, and Ray Rayner as Oliver O. Oliver, right, during "Bozo's Circus" in 1967.

  • WGN broadcasts pre-game instructions from the field for the first...

    Chicago Tribune historical photo

    WGN broadcasts pre-game instructions from the field for the first time in Western Conference history at the Northwestern-Michigan game on Oct. 18, 1941. WGN engineer, Clyde Dietrich (in coat) records the discussion between William Blake, referee, Floyd Chambers, Wildcat leader, Bob Westfall, Michigan captain, and officials Lloyd Larson, Rollie Barnum, and Emil Vick.

  • A performance of 'The Belle of New York' by the...

    Chicago Tribune historical photo

    A performance of 'The Belle of New York' by the Chicago Theater of the Air on Jan. 22, 1944, at the Medinah Temple in Chicago. At the WGN microphone are Olan Soule, Eloise Kummer, and Laurette Fillbrandt. Editors note: there is some damage to this photo.

  • Sending organ music over the radio waves from the studios...

    Chicago Tribune historical photo

    Sending organ music over the radio waves from the studios of WGN, the Chicago Tribune station, one of the most powerful in the country, circa 1935.

  • Spencer Allen of WGN-TV news room, left, and television cameraman...

    Robert MacKacy, Chicago Tribune

    Spencer Allen of WGN-TV news room, left, and television cameraman William Rockar, right, televising the fire at North Pier Terminal Warehouse from the 6th floor of Tribune Tower on April 22, 1950.

  • Carol Johnson of Austin High School and Bob Dipper of...

    Chicago Tribune historical photo

    Carol Johnson of Austin High School and Bob Dipper of Evergreen Park High School take a quick look into the camera during WGN-TV's Bandstand Matinee on May 29, 1956. WGN and popular disc jockey Jim Lounsbury hosted the rock 'n' roll show for thousands of gyrating teenagers from 1954 to 1963.

  • Charles Correll, left, and Freeman Gosden in their "Sam and...

    Chicago Tribune historical photo

    Charles Correll, left, and Freeman Gosden in their "Sam and Henry" character days, before they jumped from radio station WGN to a national network and became "Amos 'n' Andy."

  • The WGN-TV mobile unit in operation on the street as...

    Hardy Wieting, Chicago Tribune

    The WGN-TV mobile unit in operation on the street as it rehearsed programs for opening tonight at Illinois Street and the WGN Building on April 4, 1948.

  • Howard Morgan, 14, sits on the witness stand, center, and...

    Chicago Tribune historical photo

    Howard Morgan, 14, sits on the witness stand, center, and testifies against his teacher, John Thomas Scopes, in the first trial in the nation to be broadcast over the radio, circa July 18, 1925. It cost WGN $1,000 a day for the long-distance wires connecting the Tennessee courthouse and a radio studio in Chicago.

  • First Lieut. Elmer McKesson, Capt. Clarence Dittman, and announcer Jack...

    Chicago Tribune historical photo

    First Lieut. Elmer McKesson, Capt. Clarence Dittman, and announcer Jack Brickhouse of WGN, broadcast from the Chicago airport tarmac in 1942.

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PUBLISHED: | UPDATED:

For nearly a century, stations bearing the call letters WGN have been the broadcast reflection of a city, chronicling, shaping and beaming its culture through the airwaves as Chicago’s very own.

Chicagoans may be in for a culture shock if politically conservative Sinclair Broadcast Group completes its proposed acquisition of Tribune Media.

The deal, which is pending approval by federal regulators, would create the largest television station group in the U.S. and, critics contend, turn Tribune’s flagship properties — WGN-TV, WGN Radio and cable channel WGN America — into Hunt Valley, Md.’s very own platform for a partisan agenda.

“They will shift the local news that WGN puts its imprimatur on to the right,” said Angelo Carusone, president of Media Matters, a progressive media watchdog organization. “It will happen with on-air talent and the staff behind the scenes.”

If the deal is consummated and Sinclair’s history is any indication, WGN-Ch. 9, a station best known for broadcasting the Chicago Cubs, Bozo the Clown and decades of Chicago-centric programming, will be airing must-run Sinclair segments such as “Terrorism Alert Desk” and “Bottom Line With Boris,” a daily opinion piece by combative former Donald Trump surrogate Boris Epshteyn.

That should make for some interesting segues into avuncular WGN-TV weatherman Tom Skilling’s eternally sunny reports.

Sinclair agreed to buy Chicago-based Tribune Media in May for $3.9 billion, plus the assumption of $2.7 billion in debt, swallowing up a major station group that includes WGN, KTLA-TV in Los Angeles and WPIX-TV in New York and moving its conservative brand into the top three markets in the U.S.

In this May 1, 2017, photo, the WGN Radio sign appears on the side of Tribune Tower, in downtown Chicago. If the prposed deal goes through, Sinclair Broadcast Group would add WGN-AM 720 to four Seattle radio stations it already owns.
In this May 1, 2017, photo, the WGN Radio sign appears on the side of Tribune Tower, in downtown Chicago. If the prposed deal goes through, Sinclair Broadcast Group would add WGN-AM 720 to four Seattle radio stations it already owns.

The proposed merger has generated static from liberal groups, media advocates and even comedian John Oliver, who last month unleashed a scathing 20-minute takedown on his HBO show, “Last Week Tonight.” The former “Daily Show” correspondent warned that Sinclair’s right-leaning editorial views will unduly influence local news at Tribune Media’s 42 TV stations.

Some conservative broadcasters also are lining up against the deal over concerns about media concentration. The combined Sinclair-Tribune entity would have more than 200 stations, reaching 72 percent of U.S. TV households.

Sinclair executives declined to be interviewed for this story. Tribune Media spokesman Gary Weitman declined to comment or to make executives available for interviews, citing the pending transaction.

The deal, which requires approval from the Federal Communications Commission and the Department of Justice, could close by early next year.

Launched with a single UHF station in Baltimore in 1971, Sinclair has grown to 173 TV stations in 81 markets, ranging from Washington, D.C., to Ottumwa, Iowa. The closest stations to Chicago are in Champaign and Milwaukee. The company also owns the Tennis Channel, several digital networks and four Seattle radio stations, among other assets.

Sinclair produces a number of segments that every station in the chain is required to air. They include daily dispatches from the Terrorism Alert Desk and nine opinion pieces a week from Epshteyn.

A recent Epshteyn segment lauded the appointment of his “good friend” Anthony Scaramucci as White House communications director.

“The reason his appointment matters is that there is going to be a new approach to dealing with the media from the White House,” Epshteyn said. “There will now be a better working relationship between the White House and the press.”

Scaramucci’s short-lived tenure, which ended following a profanity-laden interview with a reporter from The New Yorker, made Epshteyn look less than prescient.

Amid criticism of the must-run policy, Scott Livingston, Sinclair’s vice president of news, sent out an internal memo July 16 to news directors at all of the chain’s stations, defending the practice. The memo was published online and later verified by Sinclair.

“As Sinclair has continued to have success and has grown across the country, we have come under fire from a range of competitors and other opponents who seek to damage our reputation for their own purposes,” Livingston wrote.

Livingston said Sinclair’s must-run content, the majority of which is “noncommentary” straight news from its Washington bureau, equals less than 1 hour per week. He said the commentary segments are “clearly identified” and constitute a “tiny percentage” of the stations’ weekly broadcast content.

Karl Frisch, executive director of Allied Progress, a Washington, D.C.-based progressive advocacy organization, said the conservative bent of Sinclair extends beyond its must-run segments, with pressure exerted over the manner in which local stories are covered.

“For a lot of issues, anchors and reporters and producers will hear from the national headquarters on big national stories and they will be told this is how it’s going to be reported,” Frisch said. “Over time, these reporters just get beaten into compliance because it happens so frequently.”

Analysts believe Sinclair will employ the same strategy at Tribune stations — including cost-cutting and conservative editorializing — that has played well in smaller markets.

“In an acquisition like Tribune, they’ve got some larger markets to contend with, but I don’t necessarily think their playbook is going to be any different,” said Tuna Amobi, an equity analyst with investment research firm CFRA in New York.

For Chicagoans of a certain age, WGN-Ch. 9, which hit the airwaves in 1948 from Tribune Tower, was the go-to station for homegrown children’s programming, with classics such as “Ray Rayner and His Friends,” “Garfield Goose and Friends” and “Bozo’s Circus.”

These days, WGN is perhaps best known for broadcasting 701/2 hours of local news each week, more than any other Chicago TV station. That includes a six-hour daily block with its highly rated, sometimes irreverent weekday morning news program.

If Sinclair acquires the station, said Carusone, of Media Matters, viewers may not notice changes immediately, but over time they’ll see “non sequitur” news stories that are a “reflection of Sinclair’s national agenda” inserted into WGN’s local newscasts.

They may also see some new faces delivering the news.

“There’s a very good likelihood of … turnover in the near future,” Carusone said. “It’s not just that they will be fired. Some of them will just leave because they don’t want to deal with” Sinclair’s brand of local news.

Steven Marks, executive vice president and COO of Sinclair’s television group, said during an Aug. 2 earnings call that despite the negative press, Sinclair is good at local news.

“With all the news you’ve been hearing, the bottom line is people watch us in droves,” Marks said. “We’re on top of our game, and the biggest part of what we do is local news. We’re the best at it.”

Meanwhile, the proposed deal sparked speculation that Sinclair might convert cable channel WGN America, which now reaches 80 million pay-TV homes, into a conservative news network to rival Fox News Channel.

Sinclair CEO Chris Ripley put that speculation to rest in a recent interview with Variety. A Sinclair spokeswoman confirmed that the process of reworking cable and satellite carriage agreements for the format change was “pretty impossible.”

Under Sinclair ownership, however, changes would be in store for WGN America, which started as a superstation in the 1970s by uploading WGN’s programming to satellite, beaming Cubs games, local newscasts and reruns of “The Andy Griffith Show” to distant cable providers.

Converting it to a full-fledged cable channel was a high priority for Tribune Media after the company emerged from bankruptcy at the end of 2012 under former CEO Peter Liguori.

WGN America rolled out a number of high-profile original programs and dropped Cubs baseball in a bid to become the next FX or AMC. Sinclair’s Ripley has already made clear that the cable channel would scale back original programming to reposition it for profitable growth if his company acquires Tribune.

The deal also would add WGN-AM 720 — launched by Chicago Tribune publisher Col. Robert McCormick in March 1924 with call letters standing for “World’s Greatest Newspaper” — to four Seattle radio stations already under Sinclair’s ownership.

WGN, which dubbed itself the “Voice of Chicago,” has been a news-talk staple throughout its history, with the likes of Bob Collins, Wally Phillips and Roy Leonard enshrined in its “Walk of Fame” outside its studios at Tribune Tower on North Michigan Avenue.

It is unclear how programming might evolve under Sinclair. The closest format to WGN is conservative Seattle talk radio station KVI-AM, which features a mix of local and syndicated hosts, including Sean Hannity.

“There’s a reason why WGN Radio is not the home of Sean Hannity and Rush Limbaugh in Chicago,” said Carusone, of Media Matters. “WGN has always been a balanced local radio station.”

Despite the concerns about what Sinclair ownership would mean for Tribune’s stations, the acquisition is far from a done deal.

Sinclair is banking on a more favorable regulatory environment under the Trump administration to close the Tribune deal. The FCC voted in April to reinstate the so-called UHF discount, a technologically obsolete rule that helps the combined Sinclair-Tribune entity get under an ownership cap limiting coverage to 39 percent of the TV households nationwide.

Media watchdog group Free Press challenged the FCC’s decision, but on June 15 a federal appeals court in Washington, D.C., denied an emergency motion for a stay on implementing the UHF discount. The appeal is ongoing, but Sinclair has since filed its application with the FCC, which on July 6 started its 180-day clock for completing the transaction.

“From our perspective, the important thing was the stay being lifted,” Sinclair CEO Ripley said during the Aug. 2 earnings call.

The proposed transaction exceeds the FCC ownership limit by 6.5 percent, even with the UHF discount, but Sinclair executives are hoping to avoid selling any of the stations in the combined group.

Sinclair argues that scale helps station groups compete for advertising dollars and increasingly important retransmission fees — the amount cable and satellite companies pay to carry local TV stations.

Tribune Media reported Wednesday that television revenues were down 2 percent through the first six months of 2017, citing “softness” in core advertising, partially offset by gains in retransmission revenue.

Tribune Media CEO Peter Kern said in a news release that the company remains on track to close the transaction with Sinclair.

However, in addition to earning FCC approval, the transaction has to pass muster with the Justice Department’s antitrust division, which issued a second request Aug. 2 for additional information, signaling some concerns and potentially extending the process.

“It’s a sign that at least some divestiture will be required to satisfy antitrust concerns,” said Dan Birk, an attorney at Chicago-based Eimer Stahl whose practice focuses on antitrust litigation.

Julian Sinclair Smith brought his four sons into the family-run business and built Sinclair from a modest, mostly small- and medium-market chain, into a broadcasting behemoth. David Smith became president and CEO in 1991, and the company went public with 13 TV stations in 1995, ushering in rapid growth.

In 2009, Sinclair was on the brink of bankruptcy, burdened by about $1.3 billion in debt, with $500 million in notes coming due. Sinclair was able to renegotiate the debt and began a buying spree in 2011, acquiring $3 billion in assets over several years and amassing the largest TV station chain in the country.

With Tribune Tower already sold for redevelopment and the corporate headquarters likely headed to the Baltimore suburb where Sinclair has built a TV station empire, any impact from the merger will be amplified in Chicago, the center of Tribune’s broadcasting universe.

The beginning of the end came in December 2008, when unlike Sinclair, Tribune filed for Chapter 11 bankruptcy protection during the Great Recession, emerging four years later owned by senior creditors on a mission to monetize its assets.

In 2014, Tribune Media spun off its publishing division, which is now known as Tronc and includes the Chicago Tribune, Los Angeles Times and seven other major daily newspapers, retaining broadcast, real estate and other assets.

What Sinclair does with Tribune’s rich broadcasting legacy remains to be seen.

rchannick@chicagotribune.com

Twitter @RobertChannick