In early July 2009, WTMJ launched digital channel 4.3 as an affiliate of TheCoolTV, becoming the first full-power station to carry the music video and concert programming-focused network as a digital subchannel; it was later carried by stations owned by the Sinclair Broadcast Group (except for WVTV (channel 18) and WCGV-TV locally due to WTMJ's carriage of the network) and LIN TV; WTMJ's Green Bay sister station WGBA also added TheCoolTV in November 2010. The subchannel, which locally had its on-air playlist customized by WTMJ, was co-branded with WTMJ-TV's sister radio station WLWK-FM (now WKTI), which then had a format spanning a variety of decades. In September 2011, Journal Communications filed a $257,000 lawsuit against TheCoolTV's parent company Cool Music Network, LLC, alleging non-payment of broadcast services since before June 2011.