free radio automation broadcast software

He developed a device he called an 'oscillation valve' (because it passes current in only one direction). The thermionic valve (a kind of vacuum tube) was invented in 1904 by the English physicist John Ambrose Fleming. For audio broadcasts to be possible, electronic detection and amplification devices had to be incorporated. The earliest radio stations were radiotelegraphy systems and did not carry audio. See also: History of radio § Broadcasting, and History of broadcasting Advertisement placed on November 5, 1919, Nieuwe Rotterdamsche Courant announcing PCGG's debut broadcast scheduled for the next evening

Television broadcasting is a separate service that also uses radio frequencies to broadcast television ( video) signals. Radio stations broadcast with several different types of modulation: AM radio stations transmit in AM ( amplitude modulation), FM radio stations transmit in FM ( frequency modulation), which are older analog audio standards, while newer digital radio stations transmit in several digital audio standards: DAB ( Digital Audio Broadcasting), HD radio, DRM ( Digital Radio Mondiale). Stations are often affiliated with a radio network that provides content in a common radio format, either in broadcast syndication or simulcast, or both. To receive the content the listener must have a broadcast radio receiver ( radio). In terrestrial radio broadcasting the radio waves are broadcast by a land-based radio station, while in satellite radio the radio waves are broadcast by a satellite in Earth orbit. Radio broadcasting is the broadcasting of audio (sound), sometimes with related metadata, by radio waves to radio receivers belonging to a public audience. For a broader concept, see Radio communication station.

Free radio automation broadcast software