WISN-TV (channel 12) is a television station in Milwaukee, Wisconsin, United States, affiliated with ABC. Owned by Hearst Television, it is the second-oldest television station to remain with the company in all of its various iterations behind flagship WBAL-TV in Baltimore. WISN-TV's studios are located on North 19th Street on the west end of the Marquette University campus, and its transmitter is located at Lincoln Park in the northeastern part of Milwaukee (next to the Weigel Broadcasting tower, which is used by CBS affiliate WDJT-TV, channel 58, and its sister stations). History First tenure with ABC The station first signed on the air on October 27, 1954, as WTVW (for its on-air slogan "Wisconsin's Television Window"). WTVW's transmitter building was built under a tent, as rain had threatened to delay construction. After the building was finished, a second tent was erected, and used for live automobile commercials, until it collapsed one day in early 1955. In early 1955, the station was purchased by the Hearst Corporation, publishers of The Milwaukee Sentinel and owners of WISN radio (1130 AM); the new owners changed channel 12's call letters to WISN-TV, after its radio sister (whose calls were derived from now-defunct newspaper The Wisconsin News, which merged with the Sentinel 15 years prior to its sign-on; the WTVW calls are now used by the CW-affiliated station in Evansville, Indiana). The station originally operated as a primary ABC affiliate with a secondary DuMont affiliation. WISN-TV lost the DuMont affiliation when that network ceased operations in 1956, leaving it exclusively with ABC. In January 1958, WISN-TV became the flagship station of the Badger Television Network, a three-station network serving Wisconsin that also included WFRV-TV in Green Bay and WKOW-TV in Madison. Programs broadcast by the network included Homemaker's Holiday, a quiz show hosted by Charlie Hanson; Good Housekeeping, hosted by Trudy Beilfuss titled after the Hearst magazine of the same name; and Pretzel Party, a variety program originally hosted by Larry Clark. All three programs originated from WISN-TV's studios. During March 1958, the network also aired Senate Investigation Committee hearings during late-night hours. The network ceased operations on August 8, 1958. WISN-TV and WISN radio would gain an FM radio sister when Hearst signed on WISN-FM (97.3, now WRNW) in 1961. Switch to CBS In 1961, CBS decided to affiliate with WISN-TV, as its sister radio station had been a longtime affiliate of the CBS