The receivers were simple unamplified magnetic detectors or electrolytic detectors.
2.
This problem was solved by the rectification capability of Reginald Fessenden's hot wire barretter and electrolytic detector.
3.
The first device used to demodulate audio signals, it was later superseded by the electrolytic detector, also generally attributed to Fessenden.
4.
Fessendon invented the first AM demodulator in 1904 called the electrolytic detector, consisting of a short needle dipping into a cup of dilute acid.
5.
It did significantly improve in receiving, and signals could be heard from as far away as Cuba on a receiver using an electrolytic detector.
6.
Beginning in 1905, demonstration radiotelegraph stations, using spark transmitters and electrolytic detectors, were installed for evaluation by the U . S . Navy.
7.
He also discovered the principle on which AM modulation is based, rectify and receive AM, the electrolytic detector or " liquid baretter ", in 1902.
8.
The operation was the same as in the bare-point electrolytic detector, the advantage being that the acid was sealed in, and consequently could not spill or evaporate.
9.
In 1903, Reginald Fessenden demonstrated an electrolytic detector, and de Forest developed a variation, which he called the " spade detector ", claiming it did not infringe on Fessenden's patents.
10.
In 1903 Ferri?invented a novel electrolytic detector, invented independently by Dr . Michael I . Pupin ( 1899 ), Professor Reginald A . Fessenden ( 1903 ), and W . Schloemilch ( 1903 ).
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