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Proceedings of the Institute of Radio Engineers

Issue 2 • Feb. 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 January 7, 1931

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

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

    Publication Year: 1931, Page(s): xi
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  • E. Leon Chaffee - Vice President of the Institute, 1922

    Publication Year: 1931, Page(s): 158
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  • Institute news and radio notes

    Publication Year: 1931, Page(s):159 - 168
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  • Address of the retiring president

    Publication Year: 1931, Page(s):169 - 171
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (358 KB)

    In turning over to my esteemed successor the office of President of the Institute, I wish to take this opportunity to express to my fellow officials, members of the Board of Direction, and to the numerous Committee members who have labored so devotedly and wisely in the interests of this fine organization, my most sincere and appreciative thanks. Notwithstanding the general great depression throug... View full abstract»

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  • On the Simultaneous Operation of Different Broadcast Stations on the Same Channel

    Publication Year: 1931, Page(s):173 - 194
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2816 KB)

    This paper gives a detailed account of experiments in the operation of several radio broadcast stations on a common frequency, conducted in England. The theory involved in synchronous transmission is set forth as well as accounts of tests. Three different methods of common frequency operation were tried. The results are discussed at length giving the relative advantages and disadvantages of each. View full abstract»

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  • Some Methods of Measuring the Frequency of Short Waves

    Publication Year: 1931, Page(s):195 - 213
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5632 KB)

    Four methods are given for practical frequency measurements on short waves (10-50 meters 30,000-6000 kc) with an absolute accuracy of ±0.01 per cent to ±0.001 per cent and a relative accuracy of ±0.0001 per cent. Harmonic overtones are used in each method. The frequency standards are exclusively the luminous quartz resonators developed by Giebe and Scheibe, which are exceedingly use... View full abstract»

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  • Monitoring the Operation of Short-Wave Transmitters

    Publication Year: 1931, Page(s):214 - 232
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5288 KB)

    A discussion is given of all the methods of monitoring the variations in the radiated high-frequency energy which occur in the operation of short-wave transmitters which have been used in the five years' experience of the great Nauen radio station of the "Transradio A.G." Berlin, for overseas wireless communication. The monitoring apparatus is in part located at each transmitter or transmitter gro... View full abstract»

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  • The Use of the Copper-Oxide Rectifier for Instrument Purposes

    Publication Year: 1931, Page(s):233 - 246
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2104 KB)

    Mention is made of the need for high sensitivity a-c measuring instruments and the development of the copper-oxide rectifier as a ready means of obtaining high sensitivity without sacrificing other desirable characteristics. Possibilities and limitations of half-wave rectification are discussed. An analysis is made of the copper-oxide full-wave instrument rectifier. Characteristics of this rectifi... View full abstract»

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  • Wide Range Scales for Fading Records by Electrical Means

    Publication Year: 1931, Page(s):247 - 251
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (856 KB)

    The electrical means discussed in the following paper are two in number. Relatively small modifications of the response characteristics of the recording system may be obtained by the use of a combination of plate detection and grid detection in which the latter becomes active only for strong signals. Great modifications of the response characteristics are produced by circuit arrangements of the ty... View full abstract»

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  • Note on High-Frequency Transmission during the Summer of 1930

    Publication Year: 1931, Page(s):252 - 255
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (760 KB)

    The results of observations of echo signals at Cheltenham, Md., on 20 and 25 megacycles during the summer of 1930 are presented. A notable absence of strong echoes during this period is noted and marked abnormalities in their time of occurrence (as compared with previously reported results) are found. A comparison with field strength observations on GBU, (18.62 mc) is included and a discussion of ... View full abstract»

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  • Condenser Loud-Speaker with Flexible Electrodes

    Publication Year: 1931, Page(s):256 - 267
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1445 KB)

    Condenser loud speakers employing flexible electrodes are described together with their uses as the input to an amplifier or for reproducing from the output of an amplifier unit. One electrode diaphragm utilizes an impregnated cloth carrying a conductive coating. The cooperating electrode is also flexible and air-permeable. Textile threads at spaced distances are used to maintain the separation be... View full abstract»

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  • An Experimental Method of Studying Transient Phenomena

    Publication Year: 1931, Page(s):268 - 281
    Cited by:  Papers (1)
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    The following is a description of an experimental method of studying transient phenomena which, by repeating the phenomena synchronously, enables one to observe it on the screen of an oscillograph as long as desired. View full abstract»

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  • Overseas radio extensions to wire telephone networks

    Publication Year: 1931, Page(s):282 - 303
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5120 KB)

    The progress which long-distance electric communication is making in tying the world together is perhaps nowhere more interestingly illustrated than in the developments which are now taking place in the interconnection of widely separated wire telephone networks by means of overseas radiotelephone links. The circuits already in operation are very effective and are proving to be valuable additions ... View full abstract»

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  • Sinusoidal Currents in Linearly Tapered Loaded Transmission Lines

    Publication Year: 1931, Page(s):304 - 310
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (440 KB)

    Working formulas for the calculation of input impedances and attenuation are obtained for a transmission line in which the resistance and inductance per unit length are linear functions of distance, and in which the capacitance and leakance are constant. Generalized functions depending on the initial constants and the rate of taper are introduced, in such a way that the formulas and the functions ... View full abstract»

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  • Booklets, catalogs, and pamphlets received

    Publication Year: 1931, Page(s): 311
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  • References to current radio literature

    Publication Year: 1931, Page(s):312 - 317
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (635 KB)

    This is a list of references prepared by the US Bureau of Standards. It 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 Extension of... View full abstract»

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  • Contributors to this issue

    Publication Year: 1931, Page(s):318 - 320
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Aims & Scope

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

Full Aims & Scope