WDEM-CD (channel 17) is a low-power, Class A television station in Columbus, Ohio, United States.

Since December 2024, its primary channel has served as the Columbus affiliate for the Rock Entertainment Sports Network.

[2][3] This was a change from Clarke's original plan for programming W17AI after he purchased the permit from the LaMarca Group of New York City the year before; he had originally intended on programming oriented to the large campus audience at Ohio State University.

In early 2009, the station—still owned by Triplett—changed its programming from home shopping to an arts and culture format known as "Lifeline Columbus" under the leadership of David Chesnet.

Since December 4, 2024, WDEM's primary channel has carried programming from Rock Entertainment Sports Network.