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The term SCR was part of a nomenclature system developed for the U.S. Signal Corps, used at least as far back as World War I.Three-letter designators beginning with "SC" were used to denote complete systems, while one and two-letter designators (such as "BC", for basic component, "FT" for mounting, etc.) were used for components.
The introduction of radio telegraphy was a significant step in communication during World War I. The stations utilized at that time were spark-gap transmitters . As an example, the information of the start of World War I was transmitted to German South West Africa on 2 August 1914 via radio telegraphy from the Nauen transmitter station via a ...
Several changes were made based on his suggestions. The receiver was redesigned and reissued as the SCR-54 (Set, Complete, Radio). Since there was high demand, several companies produced these sets or components, including DeForest Radio Telephone and Telegraph, Liberty Electric, Wireless Specialty Apparatus, Marconi, and General Radio.
The SCR-68 (SCR was a military term meaning Set, Complete, Radio [1]) was a military radiotelephone used by the US Army Signal Corps as an aircraft radio in the waning months of World War I. [2] Due to its many problems, primarily its inability to communicate with other radios, like its ground component the SCR-67 or the larger truck mounted SCR-108, over large distances, the SCR-68 quickly ...
The timeline of radio lists within the history of radio, the technology and events that produced instruments that use radio waves and activities that people undertook. Later, the history is dominated by programming and contents, which is closer to general history .
[1] [2] Spark-gap transmitters were the first type of radio transmitter, and were the main type used during the wireless telegraphy or "spark" era, the first three decades of radio, from 1887 to the end of World War I. [3] [4] German physicist Heinrich Hertz built the first experimental spark-gap transmitters in 1887, with which he proved the ...
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Following the start of World War One in Europe, the United States declared its strict neutrality in the conflict. Due to concerns that radio stations could be covertly used to aid a belligerent, on August 5, 1914 President Woodrow Wilson issued an executive order imposing monitoring and censorship of their transmissions. In contrast to the ...