Barretter may refer to: * Hot wire barretter, an early form of radio demodulator * Iron-hydrogen resistor or barretter, a hydrogen-filled glass bulb in which an iron wire is located * Liquid barretter, an alternative term for

electrolytic detector An electrolytic detector, or liquid barretter, is a type of detector (demodulator) used in early radio receivers. It was first used by Canadian radio researcher Reginald Fessenden in 1903, and used until about 1913, after which it was superseded ...

See also