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Radio and Electronic Engineer

Issue 7 • July 1980

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Displaying Results 1 - 11 of 11
  • Industrial scrap as an educational resource

    Publication Year: 1980
    IEEE is not the copyright holder of this material | PDF file iconPDF (109 KB)
    Freely Available from IEEE
  • Obituary

    Publication Year: 1980
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (193 KB)

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  • Letters to the Editor: The technical author

    Publication Year: 1980
    IEEE is not the copyright holder of this material | PDF file iconPDF (160 KB)
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  • A new read head for magnetic tape recorders

    Publication Year: 1980
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (310 KB)

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  • Programmable transient recorder

    Publication Year: 1980
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  • A system for reducing impulsive noise on gramophone reproduction equipment

    Publication Year: 1980, Page(s):331 - 336
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (861 KB)

    The paper describes a system for detecting and attenuating impulsive noise on gramophone records. Fast transitions and short duration are shown to be the essential characteristics of the impulsive noise waveform and a detector which uses these characteristics to distinguish between the noise and the recorded signal is described. Several methods of producing a noise-free approximation to the record... View full abstract»

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  • Reliable high-speed data transmission from a mobile vehicle via a leaky feeder

    Publication Year: 1980, Page(s):337 - 344
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (672 KB)

    This paper establishes the feasibility of transmitting high integrity data, via a leaky coaxial feeder, at much higher rates than are normally considered possible over a mobile radio channel. Both signal variations and error rates are examined. The use of diversity techniques to improve performance are considered and possible system layouts are presented. View full abstract»

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  • SPARCSߞa stored program automatic radio connection system

    Publication Year: 1980, Page(s):345 - 352
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (922 KB)

    A large area coverage radio system with telephone access is described. Two operator-controlled systems have been installed on British Rail. This paper describes the development of a stored program automatic radio connection system, which allows direct dialling between individual mobile radio users and access to the British Rail automatic trunk telephone network. Emergency override access from the ... View full abstract»

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  • A review of distortion and its measurement in p.c.m. telephony systems

    Publication Year: 1980, Page(s):353 - 362
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (954 KB)

    Pulse code modulation systems as used in telephony networks are briefly described with particular regard to the inherent quantizing distortion (q.d.). Test methods for the evaluation of signal to q.d. ratio, from analogue input to analogue output, are reviewed. Three test stimuli are considered and their advantages and disadvantages discussed. The three stimuli are a sinusoid, a band-limited noise... View full abstract»

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  • A simple algorithm for logic design using multiplexers

    Publication Year: 1980, Page(s):363 - 366
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (392 KB)

    Many algorithms have been suggested1¿5in the past to design combinational logic circuits using multiplexers. An alternative method, based on the Boolean matrix approach, is suggested here. The method is simpler and faster compared to existing methods and can be easily programmed on a computer. Finally, the proper selection of multiplexers is suggested by applying simple empirical rules. View full abstract»

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  • Some experiments in digital holographic recording

    Publication Year: 1980, Page(s):367 - 373
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1388 KB)

    A holographic recording system, based on the use of lowpower laser sources and high-resolution photographic film, is briefly outlined. It was devised principally for the archival storage of high-quality digital television signals and these requirements are reviewed. The development of suitable electro-optic transducers is difficult, largely because of the high data-transfer rates involved, but som... View full abstract»

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