Korean Central Television
Television in North Korea uses a PAL 576i Systems D and K analog signal transmission system and aspect ratio. Before 1993, North Korea was operating on the SECAM television system, which also uses 576i at 4:3. The four major television channels – Korean Central Television, Mansudae, Athletic Television and Ryongnamsan broadcast over the air, as well as on a cable television system in Pyongyang; these channels are also available in a special app found on the government issued Samjiyon tablet computers, as well as on the Manbang IPTV service.