 Rosencrans offered Robert L. Johnson air time on Friday evenings, which led to the creation of BET, a basic cable and satellite television channel targeting African American audiences.He was an early financial backer and founding board chair of C-SPAN, an American public affairs television network.In 1977, while serving as president of UA-Columbia, Rosencrans and his partner Ken Gunter contributed $25,000 and convinced other industry leaders to contribute an additional $450,000 to launch the network.