On October 11, 2007, the station began airing programming from the Retro Television Network (RTV) on its second digital subchannel. Previously, this aired The Tube (a 24-hour music channel) until the network suspended operations on October 1. On September 15, 2008, KXRM replaced RTV programming on 21.2 with a simulcast of KXTU. This signal increases KXTU's broadcasting radius; KXTU did not convert to digital until 2010, and even in digital, its coverage area is effectively limited to El Paso and Pueblo counties.