By Topic

Proceedings of the 1995 International Conference on 100 Years of Radio

5-7 Sep 1995

Filter Results

Displaying Results 1 - 25 of 43
  • Developments in terrestrial and satellite radio systems for biological tracking and location studies

    Publication Year: 1995, Page(s):246 - 249
    IEEE is not the copyright holder of this material | 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Twenty years of international satellite communication

    Publication Year: 1995, Page(s):239 - 245
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (708 KB)

    We begin with a brief historical recount of the events leading up to the establishment of INTELSAT and the subsequent growth of that system. We then review the main technical developments that were necessary to establish reliable international satellite communication services. These were spurred, for the most part, by the need to establish a global system and by the quest for increased capacity. W... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Thomas Lydwell Eckersley FRS-a radio engineer par excellence

    Publication Year: 1995, Page(s):235 - 238
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (240 KB)

    The author discusses Thomas Lydwell Eckersley, a radio engineer whose mathematical and practical contributions to the subject far outweigh most other contributions over the last century View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Trends in antenna design over 100 years

    Publication Year: 1995, Page(s):83 - 88
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (584 KB)

    Antennas are an essential part of every radio system and they have been in use for more than 100 years. The continual growth of radio has steadily increased the types of antennas in use. Hertz used reflector antennas and loops in his classic experiments in the 1880s. Other pioneers, such as Lodge, developed early examples of microwave horns and lenses. The simple monopole wire antenna was crucial ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Half-century of radio probing of the ionosphere

    Publication Year: 1995, Page(s):231 - 234
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (424 KB)

    The history of ground-based vertical-incidence sounding of the ionosphere is outlined. The ionosonde network serves for the patrol of the quiet or disturbed state of the ionosphere. Duration of the ionosphere F region peak parameters disturbance is compared with total electron content quiet times and sudden ionospheric disturbances detected by radio signal deterioration View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Eddystone Radio-a short history of receiver developments from 1965-1995

    Publication Year: 1995, Page(s):134 - 140
    IEEE is not the copyright holder of this material | 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Receiver and transmitter development in Germany 1920-1945

    Publication Year: 1995, Page(s):76 - 82
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (904 KB)

    In the early 1920s quartz as a frequency controlling device was slowly becoming more and more important. Already in the mid twenties the Germans relied on quartz, mainly as a secondary standard. Although Hans Vogt invented low-loss HF iron dust-core material in 1928, causing a tremendous improvement in German electronic circuit design, no other country in the world used this basic material so exte... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The development of HCJB World Radio from 1931 to 1995

    Publication Year: 1995, Page(s):227 - 230
    IEEE is not the copyright holder of this material | 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The development of the domestic radio receiver

    Publication Year: 1995, Page(s):128 - 133
    IEEE is not the copyright holder of this material | 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Improved communications at sea: a need and a new technology

    Publication Year: 1995, Page(s):57 - 61
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (420 KB)

    The world's first radio company was registered in Britain in 1897. Many people then expected that conventional line telegraphs, with their costly paraphernalia of wires, posts and submarine cables, would soon be obsolete. But in practice, for more than twenty years, radio made little impact on existing telegraphs. It was used instead predominantly as a means of ship-to-ship and ship-to-shore signa... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A re-appraisal of the Goldschmidt generator

    Publication Year: 1995, Page(s):71 - 75
    IEEE is not the copyright holder of this material | 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • History and evolution of the journal Radio Science and its predecessors

    Publication Year: 1995, Page(s):223 - 226
    IEEE is not the copyright holder of this material | 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 50 years of civilian satellite communications: from imagination to reality

    Publication Year: 1995, Page(s):199 - 206
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Amateur radio: past, present and future

    Publication Year: 1995, Page(s):120 - 127
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dawn in radio technology in Japan

    Publication Year: 1995, Page(s):51 - 56
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1500 KB)

    The history of telecommunications in Japan is traced back to 1854. The public telegraphic service was inaugurated in 1869 between Tokyo and Yokohama just after the birth of Meiji government. Since the establishment of communication networks was thought to be urgent to build a modern nation, it was decided by the new government to import all materials and equipment and to invite foreign engineers. ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Frequency control in radio-from quartz to direct digital synthesis

    Publication Year: 1995, Page(s):167 - 176
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (748 KB)

    Discusses the historical evolution of frequency control in radio communications. The author begins by considering the requirement of frequency control, and then goes on to consider phase noise, oscillators, the variable frequency oscillator, oscillators using quartz, the mixer synthesiser, the PLL frequency synthesiser and direct digital synthesis View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Marconi's Irish connections recalled

    Publication Year: 1995, Page(s):20 - 25
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1024 KB)

    The author discusses the life of Marconi from 1894 in Bologna, Italy, through his first commercial break in 1898 in Ireland to the commencement of broadcasting in 1923. His work at Crookhaven, Clifden and Letterfrack are considered View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • List of Authors

    Publication Year: 1995
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (40 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • “Carfax”-a casualty of the eighties

    Publication Year: 1995, Page(s):213 - 216
    IEEE is not the copyright holder of this material | 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Pulse code modulation: invented for microwaves, used everywhere

    Publication Year: 1995, Page(s):184 - 186
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (316 KB)

    The inventor of PCM, Alec H. Reeves, was seeking a modulation technique which could match the capabilities, and the limitations, of the newly-developed microwave channels. By a deep irony of technological history, PCM in its basic form turned out to be ill-adapted to the microwave channels which emerged from pioneer investigations into practical use. It was first employed in line communication, an... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Alexanderson alternator, a “near perfect” system of W/T transmission

    Publication Year: 1995, Page(s):69 - 70
    IEEE is not the copyright holder of this material | 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The initial stage of study of ionospheric radio and propagation in Russia (1895-1940)

    Publication Year: 1995, Page(s):221 - 222
    IEEE is not the copyright holder of this material | 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Cellular radio-just ten short years

    Publication Year: 1995, Page(s):193 - 198
    IEEE is not the copyright holder of this material | 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The era of the home wireless constructor

    Publication Year: 1995, Page(s):114 - 119
    IEEE is not the copyright holder of this material | 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • ELF radio

    Publication Year: 1995, Page(s):101 - 106
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (756 KB)

    We give a brief overview of the various phenomena which may he observed in the ELF (extremely low frequency: 3 Hz to 3 kHz) spectral region, terrestrial ELF propagation theory, and discuss applications which make use of the unique characteristics of ELF propagation. The paper is addressed to a non-specialist audience. Our aim is to present a concise summary of the history of ELF to date and to ide... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.