-
First Radio Invented
Invented in (1874-1937) developed, demonstrated and marketed the first successful long-distance wireless telegraph and in 1901 broadcast the first transatlantic radio signal. http://www.history.com/topics/inventions/guglielmo-marconi -
Inventor of the Radio
Italian inventor and engineer Guglielmo Marconi. Guglielmo Marconi was born in 1874 in Bologna, Italy. http://www.history.com/topics/inventions/guglielmo-marconi -
The size of the radio and shape
Radios come in all shapes and sizes, from a little AM/FM "Walkman" to a highly sophisticated, multi-mode transceiver where both the transmitter and receiver are combined in one unit. The most common modes for a broadcast radio are AM (amplitude modulation) and FM (frequency modulation). http://www.encyclopedia.com/topic/radio.aspx -
What the first radio was used for
The radio got its voice on Christmas Eve 1906. As dozens of ship and amateur radio operators listened for the evening's traffic messages, they were amazed to hear a man's voice calling "CQ, CQ" (which means calling all stations, I have messages) instead of the customary dits and dahs of Morse code. http://www.encyclopedia.com/topic/radio.aspx -
When the first commercial radio went on the air
On November 2, 1920 the first commercial radio station went on the air in Pittsburgh, Pennsylvania. It was an instant success, and began the radio revolution called the "Golden Age of Radio." http://www.encyclopedia.com/topic/radio.aspx -
what radios are used in modern day
Radios are a part of everyday life. Not only are they used to play music or as alarms in the morning, they are also used in cordless phones, cell phones, baby monitors, garage door openers, toys, satellites, and radar. Radios also play an important role in communications for police, fire, industry, and the military. Although there are many types of radios—clock, car, amateur (ham), stereo—all contain the same basic components. http://www.encyclopedia.com/topic/radio.aspx -
Digtal Radio
Digital radios can be programmed for specific stations, types of music, news, etc. Eventually, radios will have mini-computers built in to process sounds in numerical patterns "digits" rather than an analog waveform. This will allow listeners to program their radios for favorite radio stations, music type, stock quotes, traffic information, and much more. http://www.encyclopedia.com/topic/radio.aspx -
Golden Age of radio
The Golden Age of Radio lasted from the early 1920s through the late 1940s when television brought in a whole new era. During this Golden Age, the radio evolved from a simple device in a bulky box to a complex piece of equipment housed in beautiful wooden cabinets. http://www.encyclopedia.com/topic/radio.aspx
