Let's see if this one works:
It's like the Famous people in alternate Timelines-Threads, but with TV channels instead of famous people. Also, all station have to belong to the same timeline. So, let's go:
Confederate Broadcasting Company (CBC):
Founded by businessmen in the 1930's, it became the first tv-station in the CSA. In it's first years, the company was only opposed by the Confederate Television Network (CTN),but as both programs showed more or less the same conservative programming, CBC had the advantage of simply being "the first". This changed in the 1976, when Ted Turner started his television channel, Turner Broadcasting Network (TBN). CBC soon became the #2, and would suffer from it, until it started to become liberal slowly by the 90's (It would take until 1991, before a afro-american anchorman would present the evening news. TBN already had one in 1976.). Now, CBC and TBN are head-to-head, with CTN in a distant third.
Turner Broadcasting Network (TBN):
The third television broadcaster in the CSA was founded in 1976. TBN was controversial from its very beginning, as a afro-american was hosting their evening news. Also, they showed liberal series from its northern neighbour the USA, and produced liberal shows by themselves (Mainly shows where black men had main roles, unlike the CBC and CTN-shows, where they had only small and rare roles.). Despite the controversy, TBN brought fresh wind into the television of the CSA, and soon became the number one.
Turner News Network / TNN World (TNN):
This was Turner's second strike. And it was also the first the first news channel of the CSA. Founded in 1980, it soon became a journalistic institution. Not only in the CSA, but around the world (Since a world-wide channel would be launched in 1988).