Proceedings of the Institute of Radio Engineers

Issue 6 • June 1934

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  • [Front cover]

    Publication Year: 1934, Page(s): c1
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  • Institute of Radio Engineers - Forthcoming Meetings

    Publication Year: 1934, Page(s): c2
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  • Contents

    Publication Year: 1934, Page(s): i
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  • General Information

    Publication Year: 1934, Page(s): ii
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  • Institute sections

    Publication Year: 1934, Page(s): iii
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  • Geographical Location of Members Elected May 2, 1934

    Publication Year: 1934, Page(s): iv
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  • Applications for Membership

    Publication Year: 1934, Page(s): v
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  • Officers and Board of Directors, 1934

    Publication Year: 1934, Page(s): vi
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  • Institute news and radio notes

    Publication Year: 1934, Page(s):677 - 698
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  • Suppression of Interlocking in First Detector Circuits

    Publication Year: 1934, Page(s):699 - 708
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (819 KB)

    Interlocking in the oscillator circuit of superheterodynes has been a subject of study for several years. The electron coupled oscillator did a great deal to solve the problem. The advent of the pentagrid converter brings up a new set of causes by which interlocking can occur. These causes, and the manner in which they manifest themselves, are discussed in this paper. A new circuit is proposed whi... View full abstract»

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  • Resistance Tuning

    Publication Year: 1934, Page(s):709 - 731
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1947 KB)

    Resistance tuning is analyzed postulating the absence of inter-stage reaction and grid conductance. Reactance tuning is also analyzed under these same conditions. Formulas are developed by which it is possible to compute both the amplification and selectivity it is possible to attain in both cases. The fact is brought out that if we desire to attain a maximum of selectivity (and therefore a minimu... View full abstract»

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  • Quartz Crystal Controlled Oscillator Circuits

    Publication Year: 1934, Page(s):732 - 737
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (485 KB)

    A brief account is given of the developments conducted previous to 1930 which resulted in improved frequency stability for quartz crystal controlled oscillators. An improved oscillator circuit is shown with the author's theory of operation and both laboratory and operating data on its performance. Commercial equipment using this circuit has demonstrated consistent stability of better than 10 parts... View full abstract»

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  • Electrodynamic Speaker Design Considerations

    Publication Year: 1934, Page(s):738 - 750
    Cited by:  Papers (2)  |  Patents (2)
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    The operation of the diaphragm is shown to be so involved as to make its development difficult with any treatment other than an empirical one. Measurements, however, can be made upon a diaphragm to determine its efficiency and to determine the optimum mass of the voice coil to be associated with it. With the voice coil mass so determined, a method is shown for selecting the voice coil diameter and... View full abstract»

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  • The Inner-Grid Dynatron and the Duodynatron

    Publication Year: 1934, Page(s):751 - 770
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1372 KB)

    The falling characteristics of a tetrode due to the secondary emission from the inner-grid electrode are fully examined. A new type of dynatron oscillation is found to occur in a parallel resonance circuit connected to the inner-grid return. Influence of the electrode voltage upon the operating characteristics of such an oscillator is experimentally investigated. An abnormal form of oscillation ma... View full abstract»

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  • A Screen-Grid Voltmeter without External Leak

    Publication Year: 1934, Page(s):771 - 780
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1260 KB)

    A highly sensitive screen-grid voltmeter using type 24 (or 32) tubes without grid leak is described. Static and transrectification characteristics of single and twin tubes and of tube circuits including a load resistance are shown. The voltmeter is independent of frequency from low audio to ultra-high frequencies. The useful range of the twin (full wave rectifying) circuit is from 0.05 to 20 volts... View full abstract»

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  • Harmonic Production and Cross Modulation in Thermionic Valves with Resistive Loads

    Publication Year: 1934, Page(s):781 - 790
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (585 KB)

    The harmonic and modulation components in the anode current of a thermionic valve (tube), operating with a resistive load, are obtained in terms of coefficients of the power series by which the load characteristic is expressed, and amplitudes of the voltages applied to the control grid. An example is given in which it is shown that the presence of a large signal on the grid of an output pentode gr... View full abstract»

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  • Note on an Ionized Gas Modulator for Short Radio Waves

    Publication Year: 1934, Page(s):791 - 793
    Cited by:  Papers (3)
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    First Page of the Article
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  • Audio-Frequency Measurement by the Electrically-Excited Monochord

    Publication Year: 1934, Page(s):794 - 804
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (803 KB)

    A flexible stretched string is resonant at an infinite number of frequencies, which are successive multiples of the lowest or fundamental frequency. It has been suggested that an electrically-excited stretched steel wire might therefore be used to measure audio frequencies by giving multiples and submultiples of the frequency of a tuning fork. In practice, however, the resonant frequencies are far... View full abstract»

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  • Book review

    Publication Year: 1934, Page(s): 805
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  • Contributors to this issue

    Publication Year: 1934, Page(s):806 - 807
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Aims & Scope

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

Full Aims & Scope