WYIN

The first television station in northwest Indiana was WCAE, a noncommercial station owned by the Lake Central School Corporation in St. John, which broadcast on UHF channel 50 from September 26, 1967, to March 31, 1983. The station was closed when financial troubles prompted the school board to pull its subsidy, ceasing channel 50's operations.

Northwest Indiana Public Broadcasting, a group that consisted of former WCAE advisory board members who had split from the school board in 1978, bought the WCAE license in late 1983 and set out to reactivate it. In a convoluted transaction that had as its purpose the construction of a new TV station in Chicago, Metrowest Corporation (owned by Fred Eychaner) paid NIPB $684,000 to join its plan to switch the noncommercial and commercial statuses of Gary's two TV channel allocations, channels 50 and 56. Metrowest had bought a majority stake in the permitholder of WDAI, a commercial station on channel 56; however, channel 56 could not be built from the Sears Tower, while channel 50 could. The payment allowed NIPB to access matching federal grants to construct its own facilities. Metrowest eventually took channel 50 to air as commercial station WPWR-TV (now a MyNetworkTV owned-and-operated station). The WCAE non-commercial license that was now reassigned to channel 56 was reconstructed by NIPB who signed the station on the air as WYIN on November 15, 1987.

For many years, WYIN fought to try to replace its aging transmitter and build a new tower atop either the Sears Tower or the John Hancock Center in downtown Chicago. These plans were opposed by the parents of WTTW (Window to the World Communications), which was very critical of the move as it would make WYIN the second PBS station to fully serve the Chicago market. Currently, WYIN pays a lower license fee for its carriage of PBS programs. WTTW station management claimed that if WYIN was allowed to move its transmitter to Chicago, it would pay far less money for the rights to PBS programs while covering much of the same area, leaving WTTW at a disadvantage as well as taking valuable pledge donations from the station.

In the face of objections from WTTW, WYIN opted instead to build a new transmitter tower in Cedar Lake, Indiana. In November 2003, the station erected a 950-foot (290 m) transmission tower at its existing transmitter site, near Crown Point, which increased the station's power to 1.35 million watts.

The station's digital signal is multiplexed:

In September 2010, digital subchannel 56.2 began simulcasting WYIN's main channel (digital subchannel 56.4 also simulcast digital channel 56.1 anamorphic widescreen standard definition, before that subchannel was deleted in 2012). On March 30, 2015, Lakeshore Public Media collaborated with NHK to broadcast its English language network NHK World on digital subchannel 56.2; the subchannel relaunched as an NHK World affiliate on April 1, and was also initially made available on Comcast digital channel 377.[2]

WYIN previously carried "Lakeshore Kids" on digital subchannel 56.3, featuring children's programs primarily supplied by PBS Kids (some of them were distributed by American Public Television); the subchannel, which launched in 2010, was broadcast in 16:9 anamorphic widescreen standard definition. "Lakeshore Kids" signed off on January 16, 2017 after the launch of the national PBS Kids channel, deferring to WTTW-DT4, which carries the network across the market.

WYIN began transmitting a digital signal on UHF channel 17 in February 2004, following the securement of a $2 million grant from the Indiana General Assembly; the digital transmission antenna was placed on its then-recently completed transmitter facility near Crown Point.

WYIN shut down its analog signal, over UHF channel 56, on June 12, 2009, 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 remained on its pre-transition UHF channel 17.[3] Through the use of PSIP, digital television receivers display the station's virtual channel as its former UHF analog channel 56, which was among the high band UHF channels (52-69) that were removed from broadcasting use as a result of the transition.