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Sepura plc designs, manufactures and supplies digital mobile radio products, systems and applications for business and critical communications. The company specialises in both TETRA (Terrestrial Trunked Radio) and DMR (Digital Mobile Radio) technologies. Headquartered in Cambridge, UK, Sepura is a designer and manufacturer of radio terminals, with an international network of partners supplying organisations in over 100 countries worldwide. Sepura applications, systems and terminals are used in public safety (such as police, fire service and ambulance), public transport,〔Transit routes: TETRA in urban mass transit applications|http://www.tetratoday.com/news/transit-routes〕 airports, oil & gas, mining, commercial and military sectors. Sepura is listed on the London Stock Exchange. == History == Sepura’s origins are in the Pye company, founded in Cambridge in 1896. William Pye, a trained instrument maker working at Cambridge University Cavendish Laboratory, set up his own business making high precision scientific instruments. He soon built up an international customer base and a reputation for high quality products. During the First World War the company began developing and manufacturing military equipment, but after 1921, business began to slow and Pye turned its attention to designing the first commercially successful radio – the ‘700 series’. Pye also had a keen interest in television, and in 1930 started developing TV sets and cathode ray tubes. The high point of Pye pre-World War II TV development came with the introduction of the Model 915 TV, a receiver of advanced design. By 1939, a full-scale production line had been set up in Cambridge. With the arrival of the Second World War, UK TV broadcasting was suspended, and the production of the 45 MHz Pye Model 915 TV receiver ceased. Pye then turned its attention to designing and producing radar and wireless equipment for the British Military. As a developer and manufacturer, Pye produced: * 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Sepura」の詳細全文を読む スポンサード リンク
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