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The magnetic detector or Marconi magnetic detector, sometimes called the "Maggie", was an early radio wave detector used in some of the first radio receivers to receive Morse code messages during the wireless telegraphy era around the turn of the 20th century.
RadioShack (formerly written as Radio Shack) is an American electronics retailer that was established in 1921 as an amateur radio mail-order business. Its original parent company, Radio Shack Corporation, was purchased by Tandy Corporation in 1962, shifting its focus from radio equipment to hobbyist electronic components sold in retail stores.
When radio was first adopted by the U.S. Navy, a small, wooden structure placed on deck to house the ship's radio equipment became known as the "radio shack". [2] Today, a radio shack can be anywhere that radio equipment is housed and operated, usually a room such as with amateur radio stations, but for some the entire "shack" may consist of a ...
By 1990, growth of Tandy Corporation's Radio Shack chain of electronics stores and Tandy personal computers had stalled. Incredible Universe was created with the intention to compete with rapidly growing electronics superstores like Circuit City, Best Buy, and CompUSA that were taking market share from Radio Shack. The company hoped that ...
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By then computers were 35% of Radio Shack sales; the Model 100 was the world's best-selling notebook computer, while Tandy was the leading Unix vendor by volume, selling almost 40,000 units of the 68000-based, multiuser Tandy Model 16 with Xenix, [17] [23] and began selling all computers using the Tandy brand [24] because, an executive admitted ...
The Source began as the Canadian branch of Radio Shack (later "RadioShack").The first Radio Shack store in Canada was opened on April 20, 1970, in Rexdale, Ontario.The chain was originally owned by Radio Shack's American parent company Tandy Corporation, but was spun off in June 1986, along with the rest of Tandy's international operations, as InterTAN.
The systems are packaged for concealed emplacement in the field and for long-duration unattended operation. [2] The Army Research Laboratory developed unattended ground-sensor technologies for detection and tracking of personnel and vehicles for perimeter defense and border-monitoring applications. In 2005, the OmniSense system was ...
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