Radio

Radio may refer to any of the following:

1. Used since the early 1900s, radio communications allow communication at a distance using the radiation of electromagnetic waves that travel through the vacuum of space or the atmosphere. It is a method of wirelessly transmitting information such as sound or binary data and is used in Wi-Fi to network computers wirelessly.

Today, radio is used in such technologies as cellular telephones, GPS (Global Positioning System), satellite radio, broadcast television, microwave ovens, remote controls, and radar.

Radio communication history

In the early 1860s, James Clark Maxwell predicted the existence of radio waves. His predictions were proved true when Heinrich Hertz successfully demonstrated electromagnetic waves in 1886. In 1895, Guglielmo Marconi became the first person to receive a radio signal. By October 1902, he could telegraph the letter "S" across the English Channel, which became the first successful transatlantic radiotelegraph message.

2. When describing a device, a radio is an early device that allows people to listen to music using the wireless radio communications mentioned above. The picture is a stereo that could play AM and FM radio.

Who invented the radio?

Like the computer and other inventions, the Radio has many different inventors because it takes more than one technology to work like the device we know today.

The radio music player, as we know it today, is primarily credited to Guglielmo Marconi and Nikola Tesla. Both men fought over patent rights to the radio communications used with a radiotelegraph. However, without the tube diode and vacuum tubes inventions by John Fleming, the radio would also not be what it is today.

In 1906, Reginald Fessenden made the first AM (amplitude modulation) radio broadcast.

The first commercial radio broadcast began on November 2, 1920, in the United States, Pittsburgh, PA.

Edwin Armstrong invented the FM (frequency modulation) radio in 1933.

On September 25, 2001, XM radio (a satellite radio service) became available.

Is the radio still used today?

Yes. Millions of people still listen to the radio daily in their car, smartphones, and over the Internet. See musical pursuits 2023 statistics for radio listening and advertising statistics.

Electronics terms, Network, Radiation, Remote control, Wireless