Electrolytic detector | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-01-13

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Electrolytic_detector


00:01:09 1 History
00:04:37 2 Description
00:06:58 3 Sealed-point detector
00:07:37 4 See also
00:08:02 5 Notes
00:08:11 6 External links



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SUMMARY
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The electrolytic detector, or liquid barretter, was a type of detector (demodulator) used in early radio receivers.  First used by Canadian radio researcher Reginald Fessenden in 1903, it was used until about 1913, after which it was superseded by crystal detectors and vacuum tube detectors such as the Fleming valve and Audion (triode). It was considered very sensitive and reliable compared to other detectors available at the time such as the magnetic detector and the coherer.  It was one of the first rectifying detectors, able to receive AM (sound) transmissions.  On December 24, 1906, US Naval ships with radio receivers equipped with Fessendon's electrolytic detectors received the first AM radio broadcast from Fessenden's Brant Rock, Massachusetts transmitter, consisting of a program of Christmas music.