In April 1998, when KTEN (which had been affiliated with ABC on a part-time basis since its sign-on in 1956) disaffiliated from the network, WFAA began serving as a default ABC station for areas near and south of the Red River within the adjacent Sherman–Ada market—including Gainesville, and the southern Oklahoma cities of Ardmore, Durant and Hugo—through its existing availability on most cable providers in the region (KOCO-TV in Oklahoma City served as the primary default affiliate for the northern counties of the DMA in south-central Oklahoma). However, residents in extreme North Texas could view most ABC programs that were preempted by KTEN via WFAA for several years beforehand, particularly after the former switched to a primary NBC affiliation in 1986 (steadily reducing ABC-provided content on its schedule to select daytime and prime time programs by 1994, when it added an additional primary affiliation with Fox). The market would regain an ABC station of its own when KTEN launched a digital subchannel affiliated with the network on May 1, 2010. Despite this, WFAA remains available on some cable providers in the southern half of the market; Cable One, however, removed the station from its Sherman and Denison systems on February 26, 2015, due to a clause in its retransmission agreement with KTEN that precluded it from carrying any other ABC stations from nearby markets.