The new channel started with an unofficial broadcast on November 1, 1959, and made its first official broadcast several days later with the live coverage of the November 7 manifestation, commemorating the Russian Revolution of 1917.
Most were associated with a cable television (CATV) network run by the same parent company.
Around 1994-1995 private over-the-air broadcasters also appeared, but they usually only operated within a single area.
After b TV took over Efir 2's frequencies, another competition selected Nova Television, already popular in cable networks around the country, as the second privately owned national channel in Bulgaria.
The authorities currently refuse to license further analogue terrestrial channels (including local ones), until DVB-T broadcasting is started.
The Simulcast period (time between digital broadcast switch-on and analog broadcast switch-off) allowed people time to buy new integrated Digital TVs or set-top boxes.
Standards chosen are DVB-T and MPEG4 AVC/H.264 compression format, while DVB-T2 would not be used for now.
Foreign programming in the early years was limited to mostly Soviet Union productions, as well as some direct rebroadcasts of Soviet television programming.
In 1972, the first color broadcast was made, again of a manifestation.
Programming was controlled and influenced by the Bulgarian Communist Party-run government in this time, as was usual in the Eastern Bloc.
The news' trademark "spinning globe" opening, first animated in 1961, is also still used (albeit highly modified).
It also used the D/K audio system, which was generally done to prevent reception of Western European stations in Eastern Bloc countries.