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Radio Engineers, Proceedings of the Institute of

Issue 5 • Date May 1933

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  • [Front cover]

    Publication Year: 1933 , Page(s): c1
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  • Institute of Radio Engineers - Forthcoming Meetings

    Publication Year: 1933 , Page(s): c2
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  • Contents

    Publication Year: 1933 , Page(s): i
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  • General Information

    Publication Year: 1933 , Page(s): ii
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  • Institute sections

    Publication Year: 1933 , Page(s): iii
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  • Geographical Location of Members Elected April 5, 1933

    Publication Year: 1933 , Page(s): iv
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  • Applications for Membership

    Publication Year: 1933 , Page(s): v
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  • Officers and Board of Directors, 1933

    Publication Year: 1933 , Page(s): vi
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  • The Electrical Group at the Chicago Century of Progress Exposition

    Publication Year: 1933 , Page(s): 644
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  • Institute news and radio notes

    Publication Year: 1933 , Page(s): 645 - 654
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  • On the Collection of Sound in Reverberant Rooms, with Special Reference to the Application of the Ribbon Microphone

    Publication Year: 1933 , Page(s): 655 - 672
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    The effective reverberation of collected sound may be expressed as the ratio of direct to generally reflected sound. Directional sound collectors discriminate against reverberation and other undesirable sounds by increasing the ratio of direct to generally reflected sound. The resultant is to reduce the effect of the acoustics of the studio, and in this manner to facilitate the problems of sound c... View full abstract»

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  • A High-Quality Ribbon Receiver

    Publication Year: 1933 , Page(s): 673 - 681
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    The ribbon receiver consists of a ribbon diaphragm in a magnetic field. In order that the ratio of pressure in the ear cavity to the applied voltage shall be independent of the frequency, the ratio of the amplitude of the ribbon to the applied voltage must be independent of the frequency. This is accomplished by employing an acoustic system consisting of two resonant circuits. The amplitude respon... View full abstract»

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  • Permissible Amplitude Distortion of Speech in an Audio Reproducing System

    Publication Year: 1933 , Page(s): 682 - 689
    Cited by:  Papers (2)
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    This paper gives the experimental results of a brief study of permissible amplitude distortion in an audio reproducing system having a relatively flat frequency-response characteristic, from 80 to 14,000 cycles. The effect of distortion on the character of reproduction was observed when the transmission band was cut off at 5000 cycles, 8000 cycles, and 14,000 cycles. Distortion was introduced by o... View full abstract»

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  • Ferro-Inductors and Permeability Tuning

    Publication Year: 1933 , Page(s): 690 - 709
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3376 KB)  

    Brief analysis indicates that tuning by variation of inductance in such a manner that L/R of the circuit is kept constant results in constant selectance and amplification throughout the tuning range. Very finely divided and compressed magnetic-core material has been developed for this purpose. Between the prescribed limits of frequency range, iron cores can be so designed as to produce simultaneou... View full abstract»

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  • The Spray Shield Tube

    Publication Year: 1933 , Page(s): 710 - 720
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    A metal coating is applied to a vacuum tube covering the tube envelope and the shell of the base by successive operations of sand blasting and spraying metal from an oxyacetylene blow torch which produces a coating which is in intimate contact with the glass envelope. A negative potential is applied to the metal spray shield when the tube is operated which prevents cathode rays, which are not inte... View full abstract»

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  • Cyclones, Anticyclones, and the Kennelly-Heaviside Layer

    Publication Year: 1933 , Page(s): 721 - 725
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (416 KB)  

    Fading curves taken in Morgantown upon the signal of KDKA in Pittsburgh show an increase of intensity after nightfall provided a cyclonic area covers both cities or lies to the north of Morgantown. If a high pressure area covers both cities the night intensity does not increase above the day intensity and may even fall below it. These observations are explained by the theory that the Kennelly-Heav... View full abstract»

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  • Discussion on "A Fourier Analysis of Radio-Frequency Power Amplifier Wave Forms" (L. B. Hallman, Jr.)

    Publication Year: 1933 , Page(s): 726 - 731
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  • Bookelts, catalogs, and pamphlets received

    Publication Year: 1933 , Page(s): 732
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  • Radio abstracts and references

    Publication Year: 1933 , Page(s): 733 - 739
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  • Contributors to this issue

    Publication Year: 1933 , Page(s): 740
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Aims & Scope

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

Full Aims & Scope