WTTO (channel 21) is a television station licensed to Homewood, Alabama, United States, serving the Birmingham area as an affiliate of The CW. It is owned by Sinclair Broadcast Group alongside MyNetworkTV affiliate WABM (channel 68) and ABC affiliate WBMA-LD (channel 58). The stations share studios at the Riverchase office park on Concourse Parkway in Hoover (with a Birmingham mailing address), while WTTO's transmitter is located atop Red Mountain, near the Goldencrest neighborhood of southwestern Birmingham. In Tuscaloosa, west Alabama, and the western portions of the Birmingham area, WTTO's CW channel and two subchannels of WBMA-LD are rebroadcast on WDBB (channel 17), which is licensed to Bessemer. It is owned by Cunningham Broadcasting and managed by Sinclair under a local marketing agreement (LMA); however, Sinclair effectively owns WDBB, as the majority of Cunningham's stock is owned by the family of deceased group founder Julian Smith. WTTO had a tortuous history prior to starting operations. It took nearly two decades for the station to be approved and built. Once on air, the station was a successful independent for the Birmingham area. It served as the Fox affiliate for the market from 1990 to 1996, when an affiliation shuffle resulted in the loss of the affiliation. History Early history of UHF channel 21 in central Alabama The UHF channel 21 allocation in Central Alabama was originally allocated to Gadsden. The first television station in the region to occupy the allocation was WTVS, which operated during the 1950s as an affiliate of the DuMont Television Network, and was one of the earliest UHF television stations in the United States. However, it was never able to gain a viewership foothold against the region's other stations; its owners ceased the operations of WTVS in 1957, as it had suffered from severely limited viewership due to the lack of television sets in Central Alabama that were capable of receiving stations on the UHF band (electronics manufacturers were not required to incorporate built-in UHF tuners into television sets until the passage of the All-Channel Receiver Act by the Federal Communications Commission (FCC) in 1961, although such tuners would not be included on all newer sets until 1964). A long way to air In December 1963, Chapman Radio and Television Company—then the owners of radio station WCRT (1260 AM, now WYDE and 96.5 FM, now WMJJ)—filed an application to build a new television station in Homewood, using Birmingham's