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A 1930s radio. (TV: Evolution of the Daleks)

A radio, also known as a wireless, (HOMEVID: The Zero Imperative) was a communication device.

According to the Thirteenth Doctor, Nikola Tesla invented the radio first, but Guglielmo Marconi was the one who got the patent for it. (TV: Nikola Tesla's Night of Terror)

Radios were often used on Earth to play music that people could dance, sing and "fall in love" to. To Daleks, however, a radio was just noise. (TV: Evolution of the Daleks)

The emergence of the wireless as a leisure activity occurred at some point between 1918 and 1939. (PROSE: A History of Humankind)

In 1938, Orson Welles broadcast a radio play adaptation of The War of the Worlds. (AUDIO: Invaders from Mars) He also starred in the radio series The Shadow. (AUDIO: Invaders from Mars; PROSE: The Shadow of Weng-Chiang)

In the 1960s, there were a number of pirate radio ships, such as Radio Bravo, surrounding Britain. (AUDIO: Dead Air)

At some point in the 1960s, Susan Foreman acquired a transistor radio, which she used to listened to pop music, to the First Doctor's chagrin. During a Cyberman invasion, the Doctor made some adjustments to the radio waves, causing the Cybermen's mechanical brains to go haywire. (PROSE: Dr. First)

In October 1963, Susan Foreman and Cedric Chivers listened to the Beatles on Susan's transistor radio. Cedric claimed that the Beatles were always playing on the radio. (AUDIO: Hunters of Earth)

Circa 1969, radios manufactured by International Electromatics played a part in the Cybermen's plans to invade Earth. Tobias Vaughn even gave one to Jamie McCrimmon (TV: The Invasion)

A late-eighties radio. (TV: Remembrance of the Daleks)

Dr Jeremiah O'Kane had a radio in his home at Hawthorne. He listened to the news on it in 1994 before William Bruffin switched it off to speak to him. Dr O'Kane preferred the word "wireless" to "radio" and would rather listen to music on his gramophone. (HOMEVID: The Zero Imperative)

There was a radio in Clara's TARDIS when it was disguised as a diner. The Twelfth Doctor used his sonic sunglasses to activate it and use it as an amplifier. (TV: Hell Bent)

During the 22nd century Dalek invasion, the rebels received broadcasts from the Daleks via radio. (TV: The Dalek Invasion of Earth) The Daleks destroyed every radio they found and killed anyone using them to keep humans from getting together and fighting them. (PROSE: Legacy of the Daleks)

Radio existed on Mondas at the time of the creation of the Cybermen. (AUDIO: Spare Parts)