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100 Years of Radio., Proceedings of the 1995 International Conference on

Date 5-7 Sep 1995

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Displaying Results 1 - 25 of 43
  • Cellular radio-just ten short years

    Publication Year: 1995 , Page(s): 193 - 198
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (608 KB)  

    Cellular radio was designed to overcome the channel capacity limits by re-using radio frequencies over and over again in a pattern of coverage areas, called cells. In fact, the foundation ideas for cellular radio had been developed by Bell Laboratories soon after the second World War, although the technology to turn the ideas into commercial reality did not become readily available until the 1980s... View full abstract»

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  • The era of the home wireless constructor

    Publication Year: 1995 , Page(s): 114 - 119
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (624 KB)  

    Discusses the history of home wireless construction, covering a time period, from before World War I, up to World War II. The topics covered include: the crystal set era; home construction; wireless magazines; equipment; and wireless entertainment in the home View full abstract»

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  • Eddystone Radio-a short history of receiver developments from 1965-1995

    Publication Year: 1995 , Page(s): 134 - 140
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (824 KB)  

    This paper will concentrate on radio communications receivers. These are normally intended for professional use in maritime, aeronautical and signal monitoring services, principally in the range 10 kHz to 30 MHz. However, they are also used by radio amateurs in conjunction with a separate transmitter and by radio hobbyists for general listening. In 1965 the communications receiver was still basica... View full abstract»

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  • VHF communications at RAE 1937-1942

    Publication Year: 1995 , Page(s): 153 - 160
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (644 KB)  

    Discusses the role of the Royal Aircraft Establishment during the Second World War years. In particular, the author considers the ground transmitter T1131, ground receiver R1132, aerials, and the airborne transmitter-receiver TR1133 View full abstract»

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  • The initial stage of study of ionospheric radio and propagation in Russia (1895-1940)

    Publication Year: 1995 , Page(s): 221 - 222
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (248 KB)  

    Reviews the development of radiowave propagation research in Russia. The action of the first radio set in Russia was demonstrated by A.S. Popov (1895) Chernischov (1916) was the first in Russia to recognize the role of the high conducting layers of the atmosphere in radio propagation. Later on, Schuleikin (1923) described a study of a radio refraction in the Earth's atmosphere. He found the equati... View full abstract»

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  • Amateur radio: past, present and future

    Publication Year: 1995 , Page(s): 120 - 127
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (940 KB)  

    Amateur radio is a hobby that encompasses the whole range of communications technology. It has existed since the time Marconi, Hertz and others began their experiments. It is the only hobby that is regulated by the government of every country in the world. To obtain their operating licenses, amateurs are required to pass a written examination in radio regulations and fundamentals of radio technolo... View full abstract»

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  • History and trends in international radio regulation

    Publication Year: 1995 , Page(s): 141 - 146
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (644 KB)  

    International radio regulation concerns protection from interference, and sharing of the radio frequency spectrum as a resource. The author reviews the early history of radio regulation, its evolution with terrestrial and space radiocommunication, and trends View full abstract»

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  • Radio in the utilities industry

    Publication Year: 1995 , Page(s): 161 - 166
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (564 KB)  

    Whilst the history of the utility industry's involvement in radio communications does not stretch back 100 years, it does date back for nearly half that. In that time the utility industry has been a champion and pioneer of many significant developments in the use of radio. Radio has been and is essential to the industry, and it is inconceivable that the industry could now survive without it. The i... View full abstract»

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  • List of Authors

    Publication Year: 1995
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (40 KB)  

    First Page of the Article
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  • The Alexanderson alternator, a “near perfect” system of W/T transmission

    Publication Year: 1995 , Page(s): 69 - 70
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (180 KB)  

    In 1903, Steinmetz built a 1 kW 10 kHz alternator which was used by Fessenden in experiments with wireless telephony, and in 1904 he placed an order with the General Electric Company (USA) to design and build an alternator capable of operating at a frequency of 100 kHz. General Electric handed the order to Alexanderson to design. Alexanderson tested special Swedish iron strips 1.5 mills thick in s... View full abstract»

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  • History and evolution of the journal Radio Science and its predecessors

    Publication Year: 1995 , Page(s): 223 - 226
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (376 KB)  

    The international journal Radio Science is published in the USA by the American Geophysical Union (AGU) and co-sponsored by the International Union of Radio Science (URSI). Radio Science welcomes original scientific/engineering contributions on all aspects of electromagnetic phenomena related to physical problems, including the propagation through and interaction of EM waves with geophysical media... View full abstract»

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  • The development of the domestic radio receiver

    Publication Year: 1995 , Page(s): 128 - 133
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1104 KB)  

    The domestic `wireless set' was the earliest item of electronic equipment to enter the home. Although clumsy and primitive by modern standards, these sets were in effect the test beds upon which much of todays giant electronic industry is based. The period covered will be from the early 1920s when the first sets were sold to the public, to the end of the valve radio era in the late 1950s. Since th... View full abstract»

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  • Wireless in the Boer War

    Publication Year: 1995 , Page(s): 44 - 50
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1096 KB)  

    The Boer War in South Africa (1899-1902) was the first occasion in which wireless communications were used in a military conflict. The paper traces the history from the point of view of both the British and the Boer forces: both of whom had intentions to use this latest invention on the field of battle. Marconi's apparatus, in its most elementary form, went with the British Army to the front, but ... View full abstract»

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  • Fessenden and Marconi: their differing technologies and transatlantic experiments during the first decade of this century

    Publication Year: 1995 , Page(s): 32 - 43
    Cited by:  Papers (4)  |  Patents (3)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1948 KB)  

    Discusses the origin of transatlantic radio communication in the LF band. The paper considers the differing antenna, transmitter and receiver technology available. The first transatlantic experiment is then described in detail. the author goes on to consider the first radiowave propagation experiments and verifiable transatlantic radio communications View full abstract»

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  • Beating the noise

    Publication Year: 1995 , Page(s): 177 - 183
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (640 KB)  

    Noise adversely affects a radio system's performance. It can be naturally occurring or man-made and sometimes intentionally introduced as jamming. Good engineering practice based on 100 years of research and development can reduce noise and its effects to manageable levels, but there are some fundamental limits. “Know your enemy” has always been a good maxim and this paper looks at som... View full abstract»

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  • History of tuning

    Publication Year: 1995 , Page(s): 107 - 113
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (524 KB)  

    The paper summarises many of the important developments that have taken place in the tuning of radio apparatus, starting with the early work of Oliver Lodge and Guigliemo Marconi. Over the years improvements have been made both to tuning capacitors and tuning coils. Amongst these were the development of air-spaced, vane-type capacitors and of magnetic cored materials for tuning coils, notably iron... View full abstract»

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  • Developments in terrestrial and satellite radio systems for biological tracking and location studies

    Publication Year: 1995 , Page(s): 246 - 249
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (324 KB)  

    The aim of this paper is to describe some of the developments in radio technology which have been applied to transmitters suitable for terrestrial and satellite tracking studies of animals ranging from arctic polar bears to small birds of prey and fish. The design of radio location and tracking systems depends on available frequencies, transmitter powers and antennas. For terrestrial tracking appl... View full abstract»

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  • A re-appraisal of the Goldschmidt generator

    Publication Year: 1995 , Page(s): 71 - 75
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (432 KB)  

    The early wireless telegraphy transmitters were based on the generation of trains of high frequency oscillations produced by sparks. In the Goldschmidt alternator, an ingenious combination of a standard machine plus external static components generate a series of currents of increasing frequency in low impedance paths. In this alternator the principle of operation does not depend necessarily on th... View full abstract»

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  • “Carfax”-a casualty of the eighties

    Publication Year: 1995 , Page(s): 213 - 216
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (388 KB)  

    The proposal for the service, which subsequently became known as “Carfax”, was put forward by BBC Research Department in 1971. It was based upon, an extensive review of the requirements, and the resources. Designed to use a single MF resources channel, operating in TDM, it envisaged a closely-spaced network of transmitters which would provide national cover. The operating technique was... View full abstract»

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  • The development of HCJB World Radio from 1931 to 1995

    Publication Year: 1995 , Page(s): 227 - 230
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (432 KB)  

    Discusses the development of HCJB World Radio, the world's first missionary radio station, from its beginnings in Ecuador in 1931 up to the present day. The station has mushroomed over the last 64 years and has developed into an organisation today with listeners from 140 countries around the world. In 1933 the fledgling station was airing programmes for four hours daily in Spanish and English. Tod... View full abstract»

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  • The Heinrich Hertz wireless experiments at Karlsruhe in the view of modern communication

    Publication Year: 1995 , Page(s): 1 - 6
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1068 KB)  

    Highlights the contributions of Heinrich Hertz by his experiments, carried out in Karlsruhe, Germany, in the years 1885 to 1889, to the first radio communication experiments. Heinrich Hertz developed for the first time a complete pulsed radar, an indoor communication link and a material test set, all in one. The basic system components had been the spark gap oscillator, the dipole antennas for tra... View full abstract»

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  • Oliver Lodge and the origins of spark transmission

    Publication Year: 1995 , Page(s): 7 - 13
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (652 KB)  

    The origins of radio are intimately bound up with the use of sparks for generating electromagnetic waves. This has important implications for the forms of early transmitters and receivers. At the beginning of the era it was not known whether such waves existed, how to generate them or how to detect them. The advances achieved were very much the product of complementary developments along all three... View full abstract»

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  • Launching DAB: a BBC perspective

    Publication Year: 1995 , Page(s): 187 - 192
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (580 KB)  

    It is highly appropriate that a year which marks the centenary of Marconi's first successful radio experiments should also mark the start of another very significant step in the history of broadcasting, the launch of the BBC's introductory DAB service and of pre-operational services in other European countries. The paper describes the BBC's approach to it, both the technical and the service/progra... View full abstract»

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  • 50 years of civilian satellite communications: from imagination to reality

    Publication Year: 1995 , Page(s): 199 - 206
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (840 KB)  

    The article discusses the history and development of satellite communications. The concept of satellite communications is normally accredited to an Englishman, A. C. Clarke, because of a famous paper published in the British `Wireless World'. Arthur C. Clarke was not the only one thinking about communications satellites. In 1946, the Army Air Force's Project Rand, a division of Douglas Aircraft, p... View full abstract»

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  • The development of shortwave radio telecommunications in the 1920's and 30's

    Publication Year: 1995 , Page(s): 147 - 152
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (484 KB)  

    The author begins by discussing wireless communication in the early 1920s. The imperial wireless system is then considered as is the discovery of shortwaves, the shortwave beam system, transatlantic telephony, shortwave radio telephony and the regulation of the radio spectrum View full abstract»

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