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TR-55 Hydrologic Model
The TR-55, released in 1955, was Sony's first transistor radio, and the first to be made in Japan. The use of transistors allowed the device to be much smaller than earlier vacuum tube radios. History Akio Morita and Masaru Ibuka, then operating under the business name Tokyo Tsushin Kogyo, had been working on plans to introduce a transistor radio to the market since 1953. When the TR-55 was released in Japan in August 1955, it was the first transistor radio marketed in that country. The TR-55 featured the Sony name, but the company did not officially change its name to Sony until January 1958. In the fall of 1955, Morita met with a representative of the Bulova watch company in New York City. Bulova agreed to order 10,000 units on the condition they carry the Bulova name. Morita declined the deal. Sony later signed a deal with New York importer Adolph Gross to distribute an improved and slightly more compact model, and in March 1957, the Sony TR-63 transistor radio would ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TR-55
The TR-55, released in 1955, was Sony's first transistor radio, and the first to be made in Japan. The use of transistors allowed the device to be much smaller than earlier vacuum tube radios. History Akio Morita and Masaru Ibuka, then operating under the business name Tokyo Tsushin Kogyo, had been working on plans to introduce a transistor radio to the market since 1953. When the TR-55 was released in Japan in August 1955, it was the first transistor radio marketed in that country. The TR-55 featured the Sony name, but the company did not officially change its name to Sony until January 1958. In the fall of 1955, Morita met with a representative of the Bulova watch company in New York City. Bulova agreed to order 10,000 units on the condition they carry the Bulova name. Morita declined the deal. Sony later signed a deal with New York importer Adolph Gross to distribute an improved and slightly more compact model, and in March 1957, the Sony TR-63 transistor radio would become ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bell Labs
Nokia Bell Labs, originally named Bell Telephone Laboratories (1925–1984), then AT&T Bell Laboratories (1984–1996) and Bell Labs Innovations (1996–2007), is an American industrial research and scientific development company owned by multinational company Nokia. With headquarters located in Murray Hill, New Jersey, the company operates several laboratories in the United States and around the world. Researchers working at Bell Laboratories are credited with the development of radio astronomy, the transistor, the laser, the photovoltaic cell, the charge-coupled device (CCD), information theory, the Unix operating system, and the programming languages B, C, C++, S, SNOBOL, AWK, AMPL, and others. Nine Nobel Prizes have been awarded for work completed at Bell Laboratories. Bell Labs had its origin in the complex corporate organization of the Bell System telephone conglomerate. In the late 19th century, the laboratory began as the Western Electric Engineering ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Radio
The early history of radio is the history of technology that produces and uses radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as " wireless telegraphy". Later radio history increasingly involves matters of broadcasting. Discovery In an 1864 presentation, published in 1865, James Clerk Maxwell proposed theories of electromagnetism, with mathematical proofs, that showed that light and predicted that radio and x-rays were all types of electromagnetic waves propagating through free space. Between 1886 and 1888 Heinrich Rudolf Hertz published the results of experiments wherein he was able to transmit electromagnetic waves (radio waves) through the air, proving Maxwell's electromagnetic theory. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1955 In Radio
The year 1955 saw a number of significant events in radio broadcasting history. Events *2 May – Opening at Wrotham, Kent, of the United Kingdom's first VHF/ FM transmitters. *September (Labor Day weekend) – First Sig Alert broadcast in California. *22 September – The character Grace Archer dies in the BBC radio serial ''The Archers''; a spoiler for the launch of ITV in the UK on the same day. *20 October – Disc jockey Bill Randle of WERE (Cleveland) is the key presenter of a concert at Brooklyn High School (Ohio), featuring Pat Boone and Bill Haley & His Comets and opening with Elvis Presley, not only Elvis's first performance north of the Mason–Dixon line, but also his first filmed performance, for a documentary on Randle titled ''The Pied Piper of Cleveland''. *17 November – Creation of the ''Communauté des radios publiques de langue française'' (CRPLF) - an association of the French-language public broadcasters of France, Switzerland, Belgium, and Canada, later t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sony Hardware
, commonly stylized as SONY, is a Japanese multinational conglomerate corporation headquartered in Minato, Tokyo, Japan. As a major technology company, it operates as one of the world's largest manufacturers of consumer and professional electronic products, the largest video game console company and the largest video game publisher. Through Sony Entertainment Inc, it is one of the largest music companies (largest music publisher and second largest record label) and the third largest film studio, making it one of the most comprehensive media companies. It is the largest technology and media conglomerate in Japan. It is also recognized as the most cash-rich Japanese company, with net cash reserves of ¥2 trillion. Sony, with its 55 percent market share in the image sensor market, is the largest manufacturer of image sensors, the second largest camera manufacturer, and is among the semiconductor sales leaders. It is the world's largest player in the premium TV market for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Models Of Radios
A model is an informative representation of an object, person or system. The term originally denoted the Plan_(drawing), plans of a building in late 16th-century English, and derived via French and Italian ultimately from Latin ''modulus'', a measure. Models can be divided into physical models (e.g. a model plane) and abstract models (e.g. mathematical expressions describing behavioural patterns). Abstract or conceptual models are central to philosophy of science, as almost every scientific theory effectively embeds some kind of model of the universe, physical or human condition, human sphere. In commerce, "model" can refer to a specific design of a product as displayed in a catalogue or show room (e.g. Ford Model T), and by extension to the sold product itself. Types of models include: Physical model A physical model (most commonly referred to simply as a model but in this context distinguished from a conceptual model) is a smaller or larger physical copy of an physical ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SRF-39
The SRF-39 is a portable AM/ FM radio introduced in approximately 1992 by Sony. It uses a single AA battery, as its analog electronics draw very little current. It was one of the first radios to use the CXA1129 30-pin integrated circuit, which later was responsible for the SRF-39's sensitive and selective performance.T. Okanobu, H. Tomiyama and H. Arimoto"Advanced low voltage single chip radio IC" IEEE Transactions on Consumer Electronics, vol. 38, no. 3, pp. 465-475, Aug. 1992, doi: 10.1109/30.156724. A variant of the SRF-39, the SRF-39FP, has a transparent case, designed to thwart contraband concealment. The radio often appears on the commissary lists of U.S. federal prisons, hence the "FP" suffix. The SRF-39 was followed by the SRF-49 in 1997, the PSY-03 in 1999, and the SRF-59 in 2001. These radios are popular in the DXing community due to their sensitivity, selectivity and ferrite antennas. See also *History of radio The early history of radio is the history of techno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gram
The gram (originally gramme; SI unit symbol g) is a unit of mass in the International System of Units (SI) equal to one one thousandth of a kilogram. Originally defined as of 1795 as "the absolute weight of a volume of pure water equal to the cube of the hundredth part of a metre melting ice", the defining temperature (~0 °C) was later changed to 4 °C, the temperature of maximum density of water. However, by the late 19th century, there was an effort to make the Base unit (measurement), base unit the kilogram and the gram a derived unit. In 1960, the new International System of Units defined a ''gram'' as one one-thousandth of a kilogram (i.e., one gram is Scientific notation, 1×10−3 kg). The kilogram, as of 2019, is defined by the International Bureau of Weights and Measures from the fixed numerical value of the Planck constant (), which is kg⋅m2⋅s−1. Official SI symbol The only unit symbol for gram that is recognised by the International S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inch
Measuring tape with inches The inch (symbol: in or ″) is a unit of length in the British imperial and the United States customary systems of measurement. It is equal to yard or of a foot. Derived from the Roman uncia ("twelfth"), the word ''inch'' is also sometimes used to translate similar units in other measurement systems, usually understood as deriving from the width of the human thumb. Standards for the exact length of an inch have varied in the past, but since the adoption of the international yard during the 1950s and 1960s the inch has been based on the metric system and defined as exactly 25.4 mm. Name The English word "inch" ( ang, ynce) was an early borrowing from Latin ' ("one-twelfth; Roman inch; Roman ounce"). The vowel change from Latin to Old English (which became Modern English ) is known as umlaut. The consonant change from the Latin (spelled ''c'') to English is palatalisation. Both were features of Old English phonology; see ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lincoln Motor Company
Lincoln Motor Company, or simply Lincoln, is the luxury vehicle division of American automobile manufacturer Ford. Marketed among the top luxury vehicle brands in the United States, Lincoln was positioned closely against its General Motors counterpart Cadillac. The division helped to establish the personal luxury car segment with the 1940 Lincoln Continental. Lincoln Motor Company was founded in 1917 by Henry M. Leland, naming it after Abraham Lincoln. In February 1922, the company was acquired by Ford, its parent company to this day. Following World War II, Ford formed the Lincoln-Mercury Division, pairing Lincoln with its mid-range Mercury brand; the pairing lasted through the 2010 closure of Mercury. At the end of 2012, Lincoln reverted to its original name, Lincoln Motor Company. Following the divestiture of Premier Automotive Group (Jaguar, Land Rover, Aston Martin, and Volvo) and the closure of Mercury, Lincoln remains the sole luxury nameplate of Ford Motor Company. O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Texas Instruments
Texas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. It is one of the top 10 semiconductor companies worldwide based on sales volume. The company's focus is on developing analog chips and embedded processors, which account for more than 80% of its revenue. TI also produces TI digital light processing technology and education technology products including calculators, microcontrollers, and multi-core processors. The company holds 45,000 patents worldwide as of 2016. Texas Instruments emerged in 1951 after a reorganization of Geophysical Service Incorporated, a company founded in 1930 that manufactured equipment for use in the seismic industry, as well as defense electronics. TI produced the world's first commercial silicon transistor in 1954, and the same year designed and manufa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Regency TR-1
The Regency TR-1 was the first commercially manufactured transistor radio, introduced in 1954. Despite mediocre performance, about 150,000 units were sold, due to the novelty of its small size and portability. Previously, transistors had only been used in military or industrial applications, and the TR-1 demonstrated their utility for consumer electronics, offering a prescient glimpse of a future full of small, convenient hand-held devices that would develop into calculators, mobile phones, tablets and the like. Surviving specimens are sought out by collectors. Conception In May 1954, Texas Instruments, previously a producer of instrumentation for the oil industry and locating devices for the US Navy, was looking for an established radio manufacturer to develop and market a radio using their transistors. No major radio maker, including RCA, Philco, and Emerson, was interested. Ed Tudor, the president of Industrial Development Engineering Associates, (I.D.E.A), a builder of ho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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