BBC Micro depth, resolution and memory economy. In the first models, the OS and applications were left with the RAM left over from the display mode. Mode 7 was a Teletext mode, extremely economical on memory and an original requirement due to the BBC's own use of broadcast teletext (Ceefax). It also made the computer useful as a Prestel terminal. The teletext characters were generated on board, for use with monitors and TV sets without a Teletext receiver. Train time displays at UK stations were driven by BBC Master computers in this mode until around the late 1990s. Mode 7 used only
BBC Russian Service tried to bring to listeners in Soviet Union information they were deprived of, including works of writers and dissidents who could not publish their work at home, such as Alexander Solzhenitsyn. Jamming finally stopped in the late 1980s, as perestroika took hold. The BBC Russian Service has moved all its operation to the Internet, halting radio broadcasting after 65 years on air. Before the final decision to concentrate on online production the Russian Service radio was available only on AM. The BBC Russian Service partnered with "Bol'shoe Radio" (), an FM broadcaster in Moscow between April and August 2007. Daily