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Proceedings of the Institute of Radio Engineers

Issue 4 • Date April 1930

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  • [Front cover]

    Publication Year: 1930, Page(s): c1
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  • Future Events

    Publication Year: 1930, Page(s): c2
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  • Contents

    Publication Year: 1930, Page(s): i
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  • General Information

    Publication Year: 1930, Page(s): ii
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  • Suggestions for Contributors to the Proceedings

    Publication Year: 1930, Page(s): iii
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  • Institute sections

    Publication Year: 1930, Page(s): iv
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  • Geographical Location of Members Elected March 5, 1930

    Publication Year: 1930, Page(s):v - vi
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  • Applications for Membership

    Publication Year: 1930, Page(s):vii - ix
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  • Officers and Board of Direction, 1930

    Publication Year: 1930, Page(s): x
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  • Committees of the Institute of Radio Engineers, 1930

    Publication Year: 1930, Page(s):x - xiv
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  • Institute Representatives in Other Technical Bodies

    Publication Year: 1930, Page(s): xiv
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  • Arthur F. Van Dyck

    Publication Year: 1930, Page(s): 560
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  • Institute news and radio notes

    Publication Year: 1930, Page(s):561 - 569
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  • Antenna-Measuring Equipment

    Publication Year: 1930, Page(s):570 - 580
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1864 KB)

    A self-contained equipment (with exception of batteries), of portable design, for measurement of apparent capacity, apparent resistance and natural frequency of antenna-ground systems, within specified limits, is described. A substitution method is employed, adjustment of the calibrated phantom antenna being made to maintain constant frequency and constant amplitude of oscillation in the driving o... View full abstract»

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  • Transmission Characteristics of a Short-Wave Telephone Circuit

    Publication Year: 1930, Page(s):581 - 648
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (16472 KB)

    A method of observing and recording the audio-frequency transmission characteristics of a short-wave radiotelephone channel is described. These characteristics undergo rapid changes. They appear to be the result of wave interference between signals arriving at the receiver over paths of different group or electrical length possibly combined with the distortion produced by a progressive change in t... View full abstract»

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  • Summary of Progress in the Study of Radio Wave Propagation Phenomena

    Publication Year: 1930, Page(s):649 - 668
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3136 KB)

    Recent progress in the study of radio wave propagation phenomena is surveyed in the light of the history of the art. The paper is divided into three parts: (A) an historical review; (B) recent developments; and (C) conclusions and outlook for future development. Part A. The historical development of the art from its inception to 1927 is considered. The discussion includes an outline of early isola... View full abstract»

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  • Cascaded Direct-Coupled Tube Systems Operated from Alternating Current

    Publication Year: 1930, Page(s):669 - 682
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1816 KB)

    An outline is given of the characteristics which are desirable in an audio amplifier or detector-amplifier. A description is given of some direct-coupled cascaded tube systems operating from a-c supply. Among the features which are discussed are: the reduction of current drain on the filter, the elimination of "motor-boating", stabilizing against drift of plate current, the elimination of hum and ... View full abstract»

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  • Note on Day-to-Day Variations in Sensitivity of a Broadcast Receiver

    Publication Year: 1930, Page(s):683 - 689
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB)

    A series of sensitivity measurements on a highly sensitive broadcast receiver over a period of one month indicates that large variations in sensitivity may occur. The importance of these variations in sensitivity is pointed out with particular reference to intercomparison of receiver measuring equipment and production testing of radio receivers. In this particular study, a high degree of correlati... View full abstract»

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  • Considerations in Superheterodyne Design

    Publication Year: 1930, Page(s):690 - 694
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    Factors involved in the suppression of the characteristic double response of the superheterodyne are considered. Design details are given for the oscillator circuit, and oscillator-modulator coupling, as affecting the inherently uniform response characteristics. A method of aligning the circuits for single control purposes is given. View full abstract»

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  • The Piezo-Electric Resonator in High-Frequency Oscillation Circuits

    Publication Year: 1930, Page(s):695 - 717
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1912 KB)

    Cady developed theoretically the motional admittance circle diagram of the piezo-electric resonator. The object of the first part of the present paper is an experimental verification of Cady's theoretical considerations regarding motional admittance. The effect of an air-gap between the resonator and the electrodes upon the motional admittance is also studied theoretically and experimentally. The ... View full abstract»

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  • Some Experiments on Night Errors for Long Waves

    Publication Year: 1930, Page(s):718 - 722
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    This paper describes the results of experiments on night errors observed for a 19.7-kc station located at a distance of 148 km, and compares them with the results of theoretical analysis. Cyclic variations of bearings, mostly two, are noticed at sunset and the same at sunrise in inverse way, the maximum shifts being about 30 deg. At the moments when the maximum shifts occur, the bearings are disti... View full abstract»

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  • Bookelts, catalogs, and pamphlets received

    Publication Year: 1930, Page(s): 723
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  • Monthly list of references to current radio literature

    Publication Year: 1930, Page(s):724 - 728
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (733 KB)

    This is a monthly list of references prepared by the Bureau of Standards and is intended to cover the more important papers of interest to professional radio engineers 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 scheme presented in "A Decimal Classification of Radio Subjects - An Extens... View full abstract»

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  • Contributors to this issue

    Publication Year: 1930, Page(s):729 - 730
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Aims & Scope

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

Full Aims & Scope