The inventor of radio is the Serbian-American scientist Nikola Tesla[1].
In 1893, Nikola Tesla publicly demonstrated wireless communications for the first time in St. Louis, Missouri, USA. In lectures to the Franklin Institute in Philadelphia and to the National Electric Light Association, he described and demonstrated the basic principles of radio communications. The instrument he built contained all the basic elements of radio systems that preceded the invention of the vacuum tube. Nikola Tesla patented radio technology in the United States in 1897. However, the U.S. Patent Office revoked his patent in 1904 and instead granted Marconi a patent for his invention of radio. This move may have been the result of the influence of Marconi's financial backers in the United States, including Thomas Edison and Andrew Carnegie.