A tuned radio frequency receiver (TRF receiver) is a radio receiver that is usually composed of several tuned radio frequency amplifiers followed by circuits to detect and amplify the audio signal. Prevalent in the early 20th century, it can be difficult to operate because each stage must be individually tuned to the station's frequency. It was replaced by the Superheterodyne receiver invented by Edwin Armstrong.
Read more about Tuned Radio Frequency Receiver: Background, How It Works, Disadvantages of TRF Receiver, Modern Usage
Famous quotes containing the words tuned, radio, frequency and/or receiver:
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It is good.”
—Wallace Stevens (1879–1955)
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And twelve o’clock arrived just once too often,”
—Kenneth Fearing (1902–1961)
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“Gifts must affect the receiver to the point of shock.”
—Walter Benjamin (1892–1940)