 Many (if not all) cable companies created their own television channels, which were available only to their subscribers.Due to technical limitations, it was initially difficult for such channels to be distributed to other populated places in the country, but in the late 90s several channels started to appear in the entire country using Bulgarian Telecommunications Company cables as the distribution method.In 1998, M SAT (then known as Mustang Sat) became the first Bulgarian channel available via satellite.