Broadcast adult cam
Morse therefore developed the forerunner to modern International Morse code.
Television broadcasting started experimentally in the 1920s and became widespread after World War II, using VHF and UHF spectrum.Satellite broadcasting was initiated in the 1960s and moved into general industry usage in the 1970s, with DBS (Direct Broadcast Satellites) emerging in the 1980s.Originally all broadcasting was composed of analog signals using analog transmission techniques but in the 2000s, broadcasters have switched to digital signals using digital transmission.Programming may also come through a communications satellite, played either live or recorded for later transmission.Networks of stations may simulcast the same programming at the same time, originally via microwave link, now usually by satellite.Before this, all forms of electronic communication (early radio, telephone, and telegraph) were one-to-one, with the message intended for a single recipient.
The term broadcasting, borrowed from the agricultural method of sowing seeds in a field by casting them broadly about, Over the air broadcasting is usually associated with radio and television, though in recent years both radio and television transmissions have begun to be distributed by cable (cable television).
The receiving parties may include the general public or a relatively small subset; the point is that anyone with the appropriate receiving technology and equipment (e.g., a radio or television set) can receive the signal. Code of Federal Regulations, title 47, part 97 defines "broadcasting" as "transmissions intended for reception by the general public, either direct or relayed".
The field of broadcasting includes both government-managed services such as public radio, community radio and public television, and private commercial radio and commercial television. Private or two-way telecommunications transmissions do not qualify under this definition.
Broadcasts can be classified as "recorded" or "live".
The former allows correcting errors, and removing superfluous or undesired material, rearranging it, applying slow-motion and repetitions, and other techniques to enhance the program.
In general usage, broadcasting most frequently refers to the transmission of information and entertainment programming from various sources to the general public.