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Proceedings of the Institute of Radio Engineers

Issue 6 • Date June 1931

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  • [Front cover]

    Publication Year: 1931, Page(s): c1
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  • Institute of Radio Engineers - forthcoming meetings

    Publication Year: 1931, Page(s): c2
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  • Contents

    Publication Year: 1931, Page(s): i
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  • General Information

    Publication Year: 1931, Page(s): ii
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  • Suggestions for Contributors to the Proceedings

    Publication Year: 1931, Page(s): iii
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  • Institute Sections

    Publication Year: 1931, Page(s): iv
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  • Geographical Location of Members Elected May 6, 1931

    Publication Year: 1931, Page(s):v - vi
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  • Applications for Membership

    Publication Year: 1931, Page(s):vii - viii
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  • Officers and Board of Direction, 1931

    Publication Year: 1931, Page(s): ix
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  • Institute news and radio notes

    Publication Year: 1931, Page(s):920 - 936
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  • A Device for the Precise Measurement of High Frequencies

    Publication Year: 1931, Page(s):936a - 948
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2472 KB)

    A description is given of equipment which has been constructed for the measurement of radio frequencies between 5000 and 30,000 kc. The equipment consists of a million-cycle quartz-crystal oscillator as a standard of frequency, means for producing harmonics and subharmonics of this frequency, and means for combining voltages of these known frequencies with a voltage whose frequency it is desired t... View full abstract»

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  • The Suppression of Radio-Frequency Harmonics in Transmitters

    Publication Year: 1931, Page(s):949 - 962
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1304 KB)

    In the present paper the harmonic components of the antenna current are determined in terms of the corresponding components of the plate current of the power amplifier of transmitters. After investigating the cause of harmonic currents and pointing out the difficulties arising in connection with an exact calculation of the harmonics of the field strength, the discussion is confined to the effect o... View full abstract»

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  • Receiver Design for Minimun Fluctuation Noise

    Publication Year: 1931, Page(s):963 - 970
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    The effects of various changes in both tube and circuit conditions have been investigated with regard to their influence on the limitation which fluctuation noise sets on the sensitivity of a receiver. It is concluded that for minimum noise the following conditions should obtain: The gas pressure in the tube should be less than 10-4mm of mercury; the antenna-to-grid transfer circuit sho... View full abstract»

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  • Low-Frequency High Power Broadcasting as Applied to National Coverage in the United States

    Publication Year: 1931, Page(s):971 - 983
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1424 KB)

    With P. P. Eckersley's general theory derived from north European practice as a starting point, the possibilities of broadcasting in the United States on frequencies around 200 kc are examined from the viewpoint of national coverage. It is shown that Eckersley's curves can be applied approximately to the American terrain, and that as a first approximation seven low-frequency transmitters radiating... View full abstract»

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  • The Effective Height of Closed Aerials

    Publication Year: 1931, Page(s):984 - 1018
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2552 KB)

    In this article formulas are given for the calculation of the effective height of coil aerials with non quasi stationary distribution of current. Aerials of triangular, rhombical, rectangular, and pentagonal forms, suitable for use in radio beacons, are treated, and the method of taking account of the distribution of current along the aerial found by experiment discussed. Graphs for facilitating n... View full abstract»

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  • Automatic Time-Delay Relay

    Publication Year: 1931, Page(s):1019 - 1021
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (712 KB)

    The design of an automatic time-delay relay is described. For certain types of mercury-rectifier tubes no plate voltage should be applied for at least one-half minute after the filament current is turned on if the peak inverse potential exceeds 2100 volts. During a six-months' test of this relay on a special radio transmitter it has not failed to function at any time. View full abstract»

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  • Note on the Piezo-Electric Quartz Oscillating Crystal Regarded from the Principle of similitude

    Publication Year: 1931, Page(s):1022 - 1023
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    It is pointed out that the principle of similitude in the vibrating periods of an œolotropic elastic body has several useful applications. As an example the case of X-waves in X-cut quartz plates, is discussed. View full abstract»

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  • The Multiple Refraction and Reflection of Short Waves

    Publication Year: 1931, Page(s):1024 - 1033
    Cited by:  Papers (2)
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    This paper discusses the theory that normal long-distance short-wave communication is broaght about by a series of refractions and reflections. It shows how, if we know the "range/best wavelength" characteristic for ranges which entail only one "hop" of the rays, we can predict the best wavelength for any larger range necessitating a number of hops, it being assumed that propagation conditions, su... View full abstract»

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  • Bibliography on radio wave phenomena and measurement of radio field intensity

    Publication Year: 1931, Page(s):1034 - 1089
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6413 KB)

    These references are divided approximately among the following subjects indicated by the section headings: Radiation; Radio Wave Phenomena; Fading; Daily Variations, Seasonal Variations; Direction Variations; Meteorological, Geophysical, and Cosmical Effects; Eclipses; Reflection, Refraction, Diffraction, Absorption, Polarization; Kennelly-Heaviside Layer; Wave Front Angle; Transmission Formulas; ... View full abstract»

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  • Booklets, catalogs, and pamphlets received

    Publication Year: 1931, Page(s): 1090
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  • References to current radio literature

    Publication Year: 1931, Page(s):1091 - 1098
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (885 KB)

    This is a monthly list of references prepared by the US Bureau of Standards, and is intended to cover the more important papers of interest to the professional radio engineer which have recently appeared in periodicals, books, etc. The number at the left of each reference classifies the reference by subject, in accordance with the "Classification of radio subjects: An extension of the Dewey Decima... View full abstract»

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  • Contributors to this issue

    Publication Year: 1931, Page(s):1099 - 1100
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Aims & Scope

This Periodical ceased production in 1938. The current retitled publication is Proceedings of the IEEE.

Full Aims & Scope