Telecommunication Early means of communicating over a distance included visual signals, such as beacons, smoke signals, semaphore telegraphs, signal flags, and optical heliographs. Other examples of pre-modern long-distance communication included audio messages such as coded drumbeats, lung-blown horns, and loud whistles. 20th- and 21st-century technologies for long-distance communication usually involve electrical and electromagnetic technologies, such as telegraph, telephone, and teleprinter, networks, radio, microwave transmission, fiber optics, and communications satellites. A revolution in wireless communication began in the first decade of the 20th century with the pioneering developments in radio communications by Guglielmo Marconi, who won the Nobel Prize in Physics in
Radio Marconi Radio Marconi Radio Marconi is an Italian-based company that has installed and serviced audio-visual and radio equipment since 1993. It designs interactive multimedia communication systems. The company has also developed several applications for theaters, conference centers, museums and stadiums. During its lifespan, the company has become a service center for brands such as Sony, Sennheiser, Neumann, and Televic, with customers based in radio, television, theater, public authorities and security forces. In 2004, after completing a project for the Teatro alla Scala in Milan, Radio Marconi was transformed from a uninominal to a limited liability company. Radio Marconi began focusing on