![]() ![]() Some collectors specialize in police band radios. General Electric was one of several American manufacturers of transistor radios between 19. Avocado, golden harvest, and rust were popular colors in the 1960s.Ĭlock radios became popular in the late 1940s and early 1950s. Following World War II, GE introduced a wide range of colored plastic cases. Consulting manufacturers’ catalogs and pictorial identification guides is critical in determining if a radio is consistent with how it came off the assembly line.īy the early 1940s, General Electric offered its tabletop radios in the traditional brown wood finished cabinets or in an ivory plastic case. The same mechanism is often found in a variety of cabinet designs. Radio manufacturers offered dozens of different models. Cabinets divide into consoles (upright radio), tabletop radio, and entertainment center (radio combined with a record player or another electronic device).įor a radio to be considered complete, it must be housed in its period cabinet, playable (albeit tubes and some electronics can be replaced), in very good or better condition. It requires a high level of expertise to determine the precise classification into which a radio belongs.Ī radio divides into components, primarily (1) the cabinet or covering housing the radio mechanism, (2) the radio mechanism, and (3) the power source. Parts radios with the only value being salvageable tubes and other parts Like antique vehicles, radios can be divided into five classifications: In 1954, GE entered the UHF 450-470 MHz range. In 1940, Fred Link and Daniel Knoble introduced the large-scale VHF FM two-way (actually three-way) radio system. In 1934, GE produced its first two-way AM equipment. General Electric entered the land mobile (police) radio market in 1931. After a brief return to RCA, Westinghouse began making its own radios in 1946. Westinghouse used American Bosch and Emerson as suppliers. In 1936, General Electric introduced its brand of radios. Other innovations include the first practical loudspeaker and a method for recording sound on films. Irving Langmuir developed the electron tube. RCA sold vacuum tubes under its Radiotron brand. RCA marketed GE made radios under the Radiola brand and sold its first radios with the superheterodyne chassis in early 1924. ![]() General Electric began manufacturing and distributing radios through its RCA brand starting in 1919. General Electric withdrew from the partnerships in 1932. In 1922, General Electric launched WGY in Schenectady, its own radio station. In 1919, General Electric formed with AT&T, Westinghouse, and the United Fruit Company, the RCA patent partnership to develop radio technology. General Electric bought out a subsidiary of Marconi and reorganized it as RCA (Radio Corporation of America). The arrival of the vacuum tube revolutionized modern electronics and the home radio. Until the early 1920s, the most common form of radio reception was through the use of a crystal set. Marconi received a patent for the radio from the US Patent Office in 1904. In 1901, Marconi achieved the first transatlantic radio communication. Today HK is still making high end equipment and computer / auto audio components.Guglielmo Marconi built the first commercially successful wireless telegraphy system in the mid-1890s utilizing Heinrich Hertz’s 1888 proof of transmitted airborne electromagnetic waves. The 330 and 330A were all transistor, but in the mid 1970's 330B incorporated one integrated circuit, a Motorola IF amplifier unit. The HK 330 series was an entry level receiver (20 watts/channel) and Harman Kardon was always you get what you paid for company so extras were few in number yet quality was maintained. The model you see below was a high school dream when I got interested in electronics. In early 1960's Fisher Radio would incorporate true multiplex stereo which we have today. In Los Angeles there was a classical music station was KFAC and they were in am and fm broadcasting the same material for this simulcast stereo. From the latre 1950's until the end of the 1960's many station would be am and fm for simulcast stereo. Harman Kardon first implemented simulcast stereo by having separate am and fm tuning sections so you can hear the am on one channel and fm on the other channel. Harman Kardon began during the late 1950's at the beginning of high fidelity tube am/fm equipment. Harman Kardon (HK) 330 series stereo receivers. Not really a transistor radio but one of the last all transistor receivers. ![]()
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