History(from google) Guglielmo Marconi (1874-1937) Marconi improved radio transmission and receiver designs and developed the first practical systems for long distance communication by radio. In 1901 he was the first to send and receive signals across an ocean from newfoundland to Cornwall. As a result of his pioneering efforts, commercial radiotelephone service became available in later years In the 1930s the bell telephone company was working on improving heir transatlantic telephone service when they assigned Karl Jansky to investigate sources of radio static, leading to his discovery of radio waves from the milky way 上海海学信息工程学院上海海事大学信息工程学院 History (from google) ◼ Guglielmo Marconi (1874-1937) ◼ Marconi improved radio transmission and receiver designs and developed the first practical systems for long distance communication by radio. In 1901 he was the first to send and receive signals across an ocean, from Newfoundland to Cornwall. As a result of his pioneering efforts, commercial radiotelephone service became available in later years. In the 1930s the Bell Telephone company was working on improving their transatlantic telephone service when they assigned Karl Jansky to investigate sources of radio static, leading to his discovery of radio waves from the milky way