Radio cartoon pic

Radio timeline

By Jose1F
  • 1903 Ewdin Amrstrong

    1933 FM was invented by Edwin Armstrong, which FM uses frequency modulation. This helped reduce static and interference. The radio station by the name of W1XOJ was the first to broadcast in FM in the US. During the 1930s regular analog television broadcasting began in Europe and North America
  • After WW2

    After World War II, FM radio  broadcasting was introduced in Germany. In 1948, a new wavelength plan was set up for Europe at a meeting in Copenhage. Because of the recent war, Germany was only given a small number of medium waves  frequencies, which are not very good for broadcasting. After some amplitude modulation experience with VHF, it was realized that FM radio was a much better alternative for VHF radio than
  • 1960

    In 1960 Sony  introduced their first transistorized radio, small enough to fit in a vest pocket, and able to be powered by a small battery. It was durable, because there were no tubes to burn out. Over the next twenty years, transistors displaced tubes almost completely except for picture tubes and very high power or very high frequency uses
  • Telex Systems

    For thirty years, telex was the absolute cheapest form of long-distance communication, because up to 25 telex channels could occupy the same bandwidth as one voice channel. For business and government, it was an advantage that telex directly produced written documents.Telex systems were adapted to short-wave radio by sending tones over single sideband
  • 1940s

    In 1947 AT&T commercialized the Mobile Telephone service. . From its start in St. Louis in 1946, AT&T then introduced Mobile Telephone Service to one hundred towns and highway corridors by 1948. Mobile Telephone Service was a rarity with only 5,000 customers placing about 30,000 calls each week
  • Copyright era

    When radio was introduced in the 1920s many predicted the end of records. Radio was a free medium for the public to hear music for which they would normally pay. While some companies saw radio as a new avenue for promotion, others feared it would cut into profits from record sales and live performances. Many companies had their major stars sign agreements that they would not appear on radio.
  • Copyright era ll

    The copyright owners were concerned that they would see no gain from the popularity of radio and the ‘free’ music it provided.The copyright holder for a song had control over all public performances ‘for profit.’ The problem now was proving that the radio industry, which was just figuring out for itself how to make money from advertising and currently offered free music to anyone with a receiver, was making a profit from the songs.
  • Modern Day

    Today, radio has become much more than Tesla or Marconi could have ever imagined. Traditional radios and radio broadcasting have steadily become a thing of the past. Instead it has steadily evolved with more satellite radio and Internet radio stations. Radios are found not only in homes, but they are also a staple in vehicles. In addition to music, radio talk shows have also become a popular option for many.
  • 1895

    Guglielmo Marconi was the first to successfully send a radio wave and receive in Italy. He would have not been able to without scientist Nikola tesla work which was essential for Marcooni.
  • 1899

    Julio cervera baviera and Marconi collaborated on fixing the problems of the radio they were developing. This caused Baviera new radio to be patent in England, Germany, Belgium, and Spain. He later made the second and third radiotelegraph service two years later.
  • 1906

    in December, Reginald Fessenden had sent the first long distance transmission of the human voice and music from his station. Later on he would be apart of the company NESCO to help expand his research.
  • 1909

    In April, Charles David Herrold would also construct a broadcasting station in San Jose California. He was the first to claim broadcasting and he also designed omnidirectional antennas. He also was one of the first to accept advertising.
  • 1920s

    During the mid 1920s, vacuum tubes became revolutionizing radio receivers and transmitters. This helped regular wireless broadcasting for entertainment such as Argentina, Michigan, and the UK.
  • Licensed Commercial public radio

    Radio stations started getting licensed to broadcasting such as KDKA and WBZ. Although during the Word war 1, they would have to get off the air.
  • Teletypers

    in the 1930s, teletypers  automated encoding, and were adapted to pulse-code dialing to automate routing, a service called telex. For thirty years, telex was the absolute cheapest form of long-distance communication, because up to 25 telex channels could occupy the same bandwidth as one voice channel. For business and government, it was an advantage that telex directly produced written documents.Telex systems were adapted to short-wave radio by sending tones over single sideband.