Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Radio Valencia Televisión was a Venezuelan regional television network based in Valencia, Carabobo State. On April 30, 1958, Radio Valencia Televisión, channel 13, began operating its test signal, and was officially inaugurated on September 20, 1958. Its principal investors were Miguel Aché and Teodoro Gubaira. In 1962, Radio Valencia Televisión ceased its activities and was acquired by Teleinversiones, a company belonging to Diego Cisneros Bermúdez, and it began operating under the name Teletrece. A television network is a telecommunications network for distribution of television content, whereby a central operation provides programming to many television stations or pay TV providers. Until the mid-1980s, television programming in most countries of the world was dominated by a small number of broadcast networks. Many early television networks (e.g. the BBC, NBC or CBS) evolved from earlier radio networks.