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Proceedings of the Institute of Radio Engineers

Issue 4 • Date Aug. 1920

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Displaying Results 1 - 13 of 13
  • [Front cover]

    Publication Year: 1920, Page(s):c1 - c2
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  • Contents

    Publication Year: 1920, Page(s): 261
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  • Correction [to Proc. IRE, April, 1920, vol 8, no 2, pg 165]

    Publication Year: 1920, Page(s): 261
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    A corrected formula is presented for the one that appears in The PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS for April, 1920, volume 8, number 2, page 165, on line 3. Also, a correction is made to the seventh column of the second portion of Table 1. View full abstract»

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  • General Information

    Publication Year: 1920, Page(s): 261
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  • Officers and Board of Direction, 1920

    Publication Year: 1920, Page(s): 262
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  • Trans-Oceanic Radio Communication

    Publication Year: 1920, Page(s):263 - 285
    Cited by:  Papers (9)
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    The possible limitation in the number of long distance radio stations simultaneously in operation is considered. It is shown how high-speed transmission, improved directional selectivity, and better frequency selectivity would greatly increase the number of feasible co-existent stations, The utilization of a wave length band as a result of high-speed transmission is discussed in connection with fr... View full abstract»

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  • Measurement of the electromagnetic field of waves received during trans-oceanic radio transmission

    Publication Year: 1920, Page(s):286 - 296
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (937 KB)

    A series of recent experiments is described on the determination of the electric and magnetic field intensities of the waves received at Leghorn, Italy, from the Annapolis, Maryland transmitting station. A pair of large loops, respectively practically parallel and perpendicular to the incoming wave are used. The incoming signals are received by hetero-dyne oscillator and amplified. The substitutio... View full abstract»

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  • Discussion [of "Measurement of the electromagnetic field of waves received during trans-oceanic radio transmission"]

    Publication Year: 1920, Page(s):297 - 298
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    For the further progress of transmission theory it is imperative that a large amount of quantitative data be gathered in different parts of the world, especially on signals coming from great distances. It has become increasingly plain that no single formula can represent the experimental facts correctly at all times. There are factors active in transmission which produce such variations in signals... View full abstract»

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  • Radio direction changes and variations of audibility

    Publication Year: 1920, Page(s):299 - 323
    Cited by:  Papers (2)
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    As a result of a large number of systematic measurements on direction of incoming signals, using loop reception, variations of considerable magnitude in the apparent direction and occurring within short periods of time are found. Their dependence on length and character of wave are studied. There are certain possible theories of transmission proposed to account for the observed phenomena, notably ... View full abstract»

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  • Discussion [of "radio direction changes and variations of audibility," with author's reply]

    Publication Year: 1920, Page(s):324 - 325
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    It appears that all of the loops experimented with in the original work were of the same form as that described in the paper which gave an asymmetrical polar curve for its directional characteristic. Accordingly, commentor Israel suggests a possible source of error in the experiments, which would lead to a different explanation of the variations in wave direction from any so far advanced. In reply... View full abstract»

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  • Note on Radio Frequency Measurements

    Publication Year: 1920, Page(s):326 - 333
    Cited by:  Papers (3)
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    After discussing the need for a radio frequency bridge of general utility, the bridge method is critically compared with indicating, null, and potentiometer methods. Certain precautions in the shielding and coil construction of such bridges are considered; and the specific form of bridge used by the author is described in detail. Beat note with amplification and telephone indicator of balance poin... View full abstract»

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  • Note on the Input Impedance of Vacuum Tubes at Radio Frequency

    Publication Year: 1920, Page(s):334 - 339
    Cited by:  Papers (1)
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    It is shown experimentally that the input impedance of a three-element vacuum tube at radio frequency is not infinite, as heretofore supposed, but that because of the capacitive coupling between input and output circuits within the tube itself, the input impedance greatly depends on the character of the output circuit. Experiments with resistance in the output circuit are given and a theory is adv... View full abstract»

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  • Discussion

    Publication Year: 1920, Page(s):340 - 341
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Aims & Scope

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

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