MNB is an onscreen brand of what is officially known in Mongolian as Монголын Үндэсний Олон Нийтийн Телевиз 1 (Mongolian for 'Mongolian National Public Television 1', shortened as МҮОНТ-1), is a television channel owned by the Mongolian National Broadcaster (MNB), the official, a state-funded broadcaster in Mongolia. On average, the channel broadcasts for 17 hours a day, from 07:00 to midnight.
Broadcasting started in Ulaanbaatar in May/June 1931 and was organized by the Minister of Trade and Industry, Gombyn Sodnom. During the early 1960s, local radio broadcasting for Ulaanbaatar was introduced, and a second national radio channel was established. Four additional longwave transmitters were opened: 1965 in the western city of Ölgii, 1978 in Altai, Dalanzadgad, and Choibalsan.
In 1981 the Mörön transmitter started broadcasting on mediumwave. The international shortwave service started in 1964 and was renamed "Voice of Mongolia" in 1997. The Ölgii station also carries local programming in Kazakh. In 2011 Р3 was launched as a youth program.
Television broadcasts started in September 1967, and a second channel was launched in July 2011.
The transmitters are operated by RTBN (Radio and Television Broadcasting Network; Mongolian: РТС, Радио Телевизийн Үндэсний Сүлжээ).