Dipole antenna other monopole) antennas on the basis of dipole antennas of which they are one half. German physicist Heinrich Hertz first demonstrated the existence of radio waves in 1887 using what we now know as a dipole antenna (with capacitative end-loading). On the other hand, Guglielmo Marconi empirically found that he could just ground the transmitter (or one side of a transmission line, if used) dispensing with one half of the antenna, thus realizing the "vertical" or monopole antenna. For the low frequencies Marconi employed to achieve long-distance communications, this form was more practical; when radio moved to higher frequencies (especially
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