Dating rca post war tubes all samples dating


01-Feb-2015 23:47

This included a majority ownership of the Victor Company of Japan (JVC). With Victor, RCA acquired New World rights to the Nipper trademark.

As the years went on, RCA either took over, or produced for itself, a large number of patents, including that of the superheterodyne receiver invented by Edwin Armstrong.

By 1926 the market for commercial radio had expanded, and RCA purchased the WEAF and WCAP radio stations and networks from AT&T, merged them with its WJZ (the predecessor of WABC) New York to WRC (presently WTEM) Washington chain, and formed the National Broadcasting Company (NBC).

GE used RCA as its retail arm for radio sales from 1919, when GE began production, until 1930.

In 1929, RCA purchased the Victor Talking Machine Company, then the world's largest manufacturer of phonographs (including the famous "Victrola") and phonograph records.

For information on products bearing the RCA trademark since 1986, see RCA (trademark). The War Department and the Navy Department sought to maintain a federal monopoly of all uses of radio technology. This marked the beginning of a series of negotiations through which GE would buy the American Marconi company and then incorporate what would be called the Radio Corporation of America.), the Pan-American Telegraph Company, and those already controlled by the United States Navy led to a new publicly held company formed by General Electric (which owned a controlling interest) on October 17, 1919.

For the record label of the same name, see RCA Music Group and RCA Records. The wartime takeover of all radio systems ended late in 1918, when the U. Congress failed to pass a bill which would have extended this monopoly. The ending of the federal government's monopoly in radio communications did not prevent the War and Navy Departments from creating a national radio system for the United States. The following cooperation among RCA, General Electric, the United Fruit Company, the Westinghouse Electric Corporation, and American Telephone & Telegraph (AT&T) brought about innovations in high-power radio technology, and also the founding of the National Broadcasting Company (NBC) in the US.

The proposal presented by the government was that if GE created an American-owned radio company, then the Army and Navy would effect a monopoly of long-distance radio communications via this company.

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After World War I began in August 1914, radio traffic across the Atlantic Ocean increased dramatically after the western Allies cut the German transatlantic telegraph cables. The result was federally-created monopolies in radio for GE and the Westinghouse Corporation and in telephone systems for the American Telephone & Telegraph Company.

Germany, Austria-Hungary, and their allies in Europe (collectively known as the Central Powers) maintained contact with neutral countries in the Americas via long-distance radio communications, as well as telegraph cables owned by neutral countries such as the Netherlands and Denmark. The argument by the Department of War and the Department of the Navy that the usable radio frequencies were limited, and hence needed to be appropriated for use before other countries, such as the United Kingdom, France, Germany, and Canada monopolized them, collapsed in the mid-1920s following the discovery of the practicality of the use of the shortwave radio band (3.0 MHz through 30.0 MHz) for very long-range radio communications.

For the home electronic audio and video connector, see RCA connector. The Army and the Navy granted RCA the former American Marconi radio terminals that had been confiscated during the War.

The RCA trademarks are used by Sony Music Entertainment and Technicolor, which licenses the RCA brand name to other companies such as Voxx International and TCL Corporation for products descended from that common ancestor. Admiral Bullard received a seat on the Board of Directors of RCA for his efforts in establishing RCA.

In 1917 the government of the United States took charge of the patents owned by the major companies involved in radio manufacture in the United States to devote radio technology to the war effort. The first chief executive officer of RCA was Owen D. RCA's incorporation papers required that a majority of its stock be held by American citizens.All production of radio equipment was allocated to the U. RCA agreed to market the radio equipment manufactured by GE and Westinghouse, and in follow-on agreements, RCA also acquired the radio patents that had been held by Westinghouse and the United Fruit Company.



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