A brief history of radio

rnRadio is a technology that transmits data to a remote point where a receiver detects the simple without the use of cables. Radio is believed to be AM or FM stations in terms of a common glossary. In fact, radio waves are also used to receive and send data waves such as satellite transmissions, Bluetooth devices, and Wi-Fi networks. The history of radio dates back to the mid-19th century. It involved the theory related to electricity and magnetism. Telegraph was the first available technology developed from this discovery, although it required wire cables. James Maxwell had developed his own theories related to electromagnetism in 1865. This led to the first true experiments in wireless technology. Many physicists like Thomas Edison, Mahlon Loomis, and William Henry Ward patented methods of sending and receiving a wireless telegraph system, but never demonstrated a working system. In 1884, Temistocle Calzecchi-Onesti invented a device that was later refined. Edouard Branly later named it coherent in 1886. It was a glass tube filled with metal filings connected to an electric current that produced an audible click on a siren while receiving the signal. The coherent became the enabling technology that allows to receive the first radio signals. In 1887, Heinrich Hertz was the first person to refine a system that allowed him to experiment by sending wireless signals to a wireless receiver. He was honored in 1933. In 1892, a Serbian-Croatian immigrant to the United States, Nikola Tesla demonstrated the first complete radio transmitter and receiver system and became the first successful person to invent radio. Unfortunately, there was a fire in his laboratory in 1895 and he was unable to demonstrate his radio. However, in 1898, Tesla later demonstrated the first radio and filed for patents for the radio in the early 1900s. An Italian, Guglielmo Marconi was fascinated by the idea of ​​wirelessly transmitting a telegraph signal. In 1894, he successfully invented a spark transmitter with an antenna. Unfortunately, the Italian Postal Service that controlled the telegraph services was not interested in his experiment. He moved to England in 1896, where he successfully demonstrated his technology to the English Post Office, which immediately recognized its services. Queen Victoria was also impressed by her invention. Marconi was related to the British nobility, who were powerful investors in their companies and in the emerging markets of the USA. USA In 1900, another American Reginald Fessenden demonstrated his new technology that was used by the meteorological department to send information to ships at sea. He invented the Barretter detector that allows him to develop amplitude modulation (AM). The 1920s was the true birth of modern radio, and almost every house had a radio. Television began catching up during the 1960s and was a preferred medium of entertainment for Americans. However, the radio remained firmly in the car, and in the 1990s, many Americans listened to the radio in their car or at work. Wireless transmission of traffic reports, music and news to radio receivers still prevails despite the advent of the internet and satellite radio. https://radiofidelity.com/