TV Difusora Sul

The station was founded in 1983 as TV Curimã, by businessmen Gilberto Bomtempo and Raimundo Cabeludo^[1] (the latter also a partner in TV Karajás and TV Tropical). At the time, the station broadcast the programming of the recently launched Rede Manchete on VHF channel 7. Its headquarters were located in the same building as Cultura FM (today Difusora FM), on Rua Simplício Moreira, in the city center. On August 23, 1988, President José Sarney granted a generator concession to TV Curimã, which is now managed by the politician and former mayor of Imperatriz Ribamar Ficane, in partnership with his wife, Zenira Ficane, as well as Lia Evangelista de Souza and Marcelo Rodrigues.^[2]

In 1989, the station left Manchete and became an affiliate of SBT, changing affiliation with TV Karajás. On August 15, 1990, the station changed its name to TV Alvorada, and in the same year, it moved to its current headquarters at Rua Monte Castelo, 207, modernized its equipment and hired new professionals. In 1992, TV Alvorada was renamed TV Difusora Imperatriz, starting to operate jointly with TV Difusora São Luís.^[3]

In 2006, Ribamar Ficane sold TV Difusora Imperatriz to Sistema Difusora de Comunicação.^[3] The new owner, Edinho Lobão, leases the station to businessman Ernani Ferraz, who renamed it TV Difusora Sul, at the same time making much of the programming independent of the headquarters in São Luís, and adopting a visual identity separate from the state capital's affiliate. In August 2007, Edinho regained control of the station,^[4] and the following year he was investigated by the Federal Public Ministry due to the illegal leasing of TV Difusora Sul.^[5]

In March 2016, like TV Difusora São Luís, TV Difusora Sul was leased by then federal deputy Weverton Rocha, represented by lawyer and businessman Willer Tomaz de Sousa, together with Difusora Sul FM.^[6] The station would come under definitive control of the new owners four years later, after the sale of Sistema Difusora de Comunicação in March 2020.^[7]

The station began its digital transmissions on February 21, 2017, through UHF channel 38.

Based on the federal decree transitioning Brazilian TV stations from analog to digital signals, TV Difusora Sul, as well as the other stations in Imperatriz, ceased broadcasting on VHF channel 7 on December 17, 2018, following the official ANATEL roadmap.^[8] The station turned off the analog transmitter at 11:59pm, without inserting the shutdown slide.