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Digital antenna array (receiver segment) Digital antenna array (transmitter part) Digital antenna array (DAA) is a smart antenna with multi channels digital beamforming, usually by using fast Fourier transform (FFT). The development and practical realization of digital antenna arrays theory started in 1962 under the guidance of Vladimir Varyukhin .
RadioShack (formerly written as Radio Shack) is an American electronics retailer, which 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. At its peak in 1999 ...
The radio's theory of operation is based on the principle of the Wadley Loop tuner [1] (developed by Trevor Wadley in the 1960s), and was one of the first radios marketed by Tandy Corporation to have a digital frequency display. The DX-302 succeeded and improved upon the similar Realistic DX-300. The frequency range is from 10 kHz to 30 MHz. [2]
The change to Realistic that year was reportedly made just in time before Radio Shack’s 1956 catalogs were to be printed. The company's most notable products under the Realistic brand included the extensive line of TRC series Citizens Band radio transceivers , which dominated the CB Radio market during the 1970s, and included the Navaho ...
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ATV includes the study of building of such transmitters and receivers, and the study of radio propagation of signals travelling between transmitting and receiving stations. [3] ATV is an extension of amateur radio. It is also called HAM TV or fast-scan TV (FSTV), as opposed to slow-scan television (SSTV).
Completely unrelated was a version of TRSDOS by Radio Shack for its TRS-80 Model II professional computer from 1979, also based on the Z80 and equipped with 8-inch disk drives. The later machines in this line, the Models 12, 16 and 6000, used the Z80 as an alternate CPU to its main Motorola 68000 chip and could run this version of TRSDOS for ...
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