WCBS-TV
On October 21, 2014, CBS and Weigel Broadcasting announced the launch of a new digital subchannel service called Decades, scheduled to launch on all CBS-owned stations on May 25, 2015, including on WCBS-TV on channel 2.2. The channel is co-owned by CBS and Weigel (owner of CBS affiliate WDJT-TV in Milwaukee), with Weigel being responsible for distribution to non-CBS-owned stations. It airs programs from the extensive library of CBS Television Distribution, including archival footage from CBS News. On September 3, 2018, Decades was replaced on 2.2 by Start TV.
Wisconsin Public Television
Wisconsin was a relative latecomer to educational television, despite its earlier leading role in educational radio. Channel 21's radio sister, WHA-AM, is one of the oldest educational radio stations in the world. By the time channel 21 signed on, UW had already launched a radio network that evolved into today's Wisconsin Public Radio. However, for most of the time from the 1950s through the 1970s, it was one of only three stations in the state that was a member of National Educational Television and its successor, PBS. The others were WMVS (channel 10) and WMVT (channel 36) in Milwaukee. The only other areas of the state outside of Milwaukee and Madison that had a clear signal from an NET/PBS member station were the northwest (from Duluth, Minnesota's WDSE-TV) and the southwest (from the Twin Cities's KTCA-TV). During the late 60s and into the early 70s, commercial station KFIZ-TV in Fond du Lac was contracted by the UW-Madison Board of Regents to simulcast portions of WHA-TV's broadcast day, bringing WHA's programming into the Green Bay and Milwaukee markets.