Česká televize (Czech television) is the public television broadcaster in the Czech Republic. Television in Czechoslovakia started to take its first steps before World War II. However, before visible results could be achieved, all activities were interrupted by the war. Research continued after the war. The first trial television broadcast was shown in 1948 at the MEVRO International Radio Exhibition in Prague. Its successor Czech Television was established as of January 1, 1992, based on the Czech Television Act (Act No. 483/1991 Coll.) as a television service for the citizens of the Czech Republic.
On January 1, 1993, a new concept of channels broadcast by Czech Television was introduced, which were renamed to CT1 (formerly CTV), CT2 (formerly F1), and CT3 (formerly OK3). On February 3, 1994, Czech Television freed one of the nationwide broadcast channels in accordance with the law; starting February 4, 1994 Czech Television was left with two channels – CT1 and CT2.
New channels (news channel ČT24 and sports channel ČT4 Sport) were added in 2005 and 2006 because of planned digital terrestrial broadcasting. ČT24 went on air on May 2, 2005 and ČT4 Sport on February 10, 2006.