Radio is a communication that used electromagnetic waves to transmit information one place to another without use the wires. Guglielmo Marconi from Itali was the inventor of radio. The radio station is to broadcast news, talk, music and others. The earlist radio for maritime use to send telegraphy message between ships and land. One of the uses of marine telegraphy is the most know during Titanic ship tragedy in 1912, including the relationship between the operator and the announcement passenger list of survivors to stations on the coast.
Nowdays, there are various forms of radio, including a wide variety of wireless network and mobile communications, as well as radio broadcasting. Before the rise of television, radio television includes not only news and music, but also in drama, comedy, and other forms of entertainment. At that the time, radio is unique between the methods of drama presentation because it only give off the sound
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