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Radio Engineers, Proceedings of the Institute of

Issue 1 • Date Jan. 1935

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  • Information about the Society

    Publication Year: 1935 , Page(s): i
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  • Contents of Volume 23

    Publication Year: 1935 , Page(s): iii - xi
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  • Author index

    Publication Year: 1935 , Page(s): xii - xiii
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  • Subject index

    Publication Year: 1935 , Page(s): xiv - xviii
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  • [Front cover]

    Publication Year: 1935 , Page(s): c1
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  • Institute of Radio Engineers - Forthcoming Meetings

    Publication Year: 1935 , Page(s): c2
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  • Contents

    Publication Year: 1935 , Page(s): i
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  • General Information

    Publication Year: 1935 , Page(s): ii
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  • Institute sections

    Publication Year: 1935 , Page(s): iii
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  • Geographical Location of Members Elected December 5, 1934

    Publication Year: 1935 , Page(s): iv
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  • Applications for Membership

    Publication Year: 1935 , Page(s): v
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  • Officers and Board of Directors, 1934

    Publication Year: 1935 , Page(s): vi
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  • Institute news and radio notes

    Publication Year: 1935 , Page(s): 1 - 10
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  • Transmission and Reception of Centimeter Waves

    Publication Year: 1935 , Page(s): 11 - 23
    Cited by:  Papers (7)
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    Apparatus is described consisting of a new type split-anode magnetron, which has been used to generate 2.5 watts of energy at 9 centimeters wavelength, with an efficiency compared to direct-current plate dissipation of 12 per cent. The methods used for measuring the tube output energy and the radiated energy are explained. Measurements of attenuation made with this apparatus up to distances of 16 miles line-of-sight through air indicate that an inverse distance law for field strength is obeyed. Modulation of the waves by means of variation in the transmission of an ionized gas is described. A summary is given of some experiments which have been made using rectifying crystals, positive grid tubes, and magnetrons as centimeter wave detectors. View full abstract»

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  • Horizontal Rhombic Antennas

    Publication Year: 1935 , Page(s): 24 - 46
    Cited by:  Papers (11)
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    This paper discusses the theoretical methods employed by the authors in dimensioning horizontal rhombic receiving antennas. Experimental proof is given of the engineering accuracy of the directivity calculations on which this work is based. There are included brief descriptions of the antenna-to-transmission-line coupling circuits and the resistance terminations for rhombic antennas. View full abstract»

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  • A New System for the Remote Control of Radio Broadcast Receivers

    Publication Year: 1935 , Page(s): 47 - 54
    Cited by:  Papers (1)
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    A system for the remote control of radio broadcast receivers has been developed in which tuning is effected by rotating the dial of a suitably designed rheostat which, by varying the field currents in a motor of novel construction, produces movement of the rotor and condenser gang synchronously with the rotation of the dial. Control of volume is effected by a switching arrangement which automatically removes from the circuit unused volume controls, allowing independent control of volume. View full abstract»

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  • The Secondary Emission Phototube

    Publication Year: 1935 , Page(s): 55 - 64
    Cited by:  Papers (3)
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    A type of phototube is described in which the secondary electron emission from an auxiliary cathode (bombarded by the photo-electrons) is utilized to obtain amplification of the primary photocurrent. Phenomena of secondary emission, particularly as applied to the vacuum phototube, are discussed. The operating performance of a typical developmental embodiment is illustrated, and it is shown that its static sensitivity is comparable with that of a corresponding gas phototube; that as regards fidelity, it retains the freedom of the vacuum phototube from the considerable loss in response at the higher audio frequencies which is inherent in the gas phototube; and that on the basis of noise produced by the microscopic fluctuations of its current, it is somewhat superior to the comparable gas tube, and approximately equivalent to a vacuum phototube having the same emission and followed by an amplifier having an over-all gain equivalent to the secondary emission amplification. Life tests indicate that the stability of these tubes is entirely comparable with that of the vacuum phototube, both as regards secondary emitter and photocathode behavior. In addition to the usual applications, various incidental uses of these phototubes are suggested. View full abstract»

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  • The Temperature Coefficient of Inductance, with Special Reference to the Valve Generator

    Publication Year: 1935 , Page(s): 65 - 84
    Cited by:  Papers (2)
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    This paper discusses the manner in which the inductance of a coil depends on temperature, and has been written as a contribution to the problem of the temperature coefficient of frequency of a valve generator. Preliminary consideration shows that when a coil expands without change of form, it will have a temperature coefficient of inductance equal to the coefficient of linear expansion of the metal of which it is made. Such copper coils would give a negative temperature coefficient of frequency of about eight parts in 106per degree centigrade. Since valve generators are sometimes found to have a temperature coefficient much greater than eight parts in 106, it is necessary to consider the effect of deforming the coil. The first type of coil examined is a concentric cable; this form is amenable to exact analysis, and the results are a valuable guide to the behavior of more common forms of coil. The temperature coefficient of "internal inductance" and of self-capacitance is calculated and found to modify the net temperature coefficient by a negligible amount; accordingly, it is argued these effects can be ignored in all forms of coil. The core is then supposed to buckle under temperature stress and this is found to make the net coefficient less than that of linear expansion. The next example is a long solenoid wound on a form which constrains one diameter, so that the cross section becomes elliptical. View full abstract»

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  • A Note on Fundamental Suppression in Harmonic Measurements

    Publication Year: 1935 , Page(s): 85 - 88
    Cited by:  Papers (1)
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    The measurement of the harmonic components of a periodic wave having a fundamental amplitude which predominates can sometimes be advantageously accomplished by using a network to suppress the fundamental component from the input terminals of the harmonic analyzing device. In this paper the method is discussed in connection with various harmonic analyzers and a few calculations are given to show the effectiveness of a bridge type of fundamental suppressing circuit. View full abstract»

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  • Contributors to this issue

    Publication Year: 1935 , Page(s): 89 - 90
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Aims & Scope

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

Full Aims & Scope