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Broadcasting, IEEE Transactions on

Issue 3 • Date Sept. 1968

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Displaying Results 1 - 6 of 6
  • IEEE Transactions on Broadcasting - Table of contents

    Page(s): c1
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    Freely Available from IEEE
  • IEEE Broadcasting Group

    Page(s): c2
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  • Stereophonic Separation in Transmission

    Page(s): 101 - 106
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    This paper is primarily concerned with the stereophonic separation provided in a transmitted FM stereophonic signal. The equation derived, however, involves only parameters whose values are obtained from oscilloscopic displays of the composite stereophonic signal and is even more applicable to unmodulated composite stereophonic signals. There is a discussion of accuracy limitations imposed by methods and associated test equipment required for practical applications of the equation. It is pointed out that the so-called "pilot phase" [FCC Rules and Regulations 73.322(c)], should have a tolerance associated with it since it is one of the parameters involved in separation. A value of 500 nanoseconds is reasonable. View full abstract»

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  • Some Highlights in the Engineering of the British Commercial Independent Television Service

    Page(s): 107 - 125
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    The history of the creation of a new national TV network for the United Kingdom is given. From the start, the United States has been accustomed to free enterprise radio and television services (not forgetting the FCC). But in the United Kingdom and Europe, however, broadcasting was strictly state-controlled and no advertising was permitted. Then, in 1954, a British Conservative government, against severe opposition from the Left, introduced a new "Television Act" which permitted a Public Authority¿the Independent Television Authority (ITA)¿to provide a second television service for the whole of the country by granting a franchise to a number of separate, financially self-supporting program companies, each with their own technical facilities and staff. These companies were to supply programs that they and the ITA considered to be of national merit to various regions of the country and to broadcast such programs over a comprehensive lines network and a series of transmitting stations sited, built, and operated by the ITA itself. This was a unique combination of private initiative and public control. In contrast to a centralized organization such as the BBC, the ITA established its service as a federal system. The considerable influence of this policy on the way the new network should be engineered and the technical developments that followed are described. In particular, it is interesting to note the spectacular rate of increase in the number of viewers receiving the ITA programs as the new service was developed. View full abstract»

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  • A Method of Obtaining a Smooth Pattern on Circular Arrays of Large Diameters with cosn Φ Elements

    Page(s): 126 - 136
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    There are many applications on which one would want to obtain an omnidirectional pattern by mounting many directional antennas around a large structure. If the structure is many wave-lengths in size and if the directional antennas are mounted pointing radially out, then the resulting pattern will usually present very rapid excursions in amplitude with very deep nulls. If one assumes that the directional antennas are of the type cosn ϕ(-π/2⩽ϕ⩽π/2 and zero elsewhere), which are closely approximated by many practical anteunas, then it is possible to smooth out considerably the resulting pattern by pointing the directional antennas tangentially to a circle circumscribing the structure and by properly choosing the radius of the circle. The number of antennas to be uesd determines the value of n. View full abstract»

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  • Information for authors

    Page(s): 136a - 136b
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Aims & Scope

IEEE Transactions on Broadcasting covers the field of broadcast technology, including the production, distribution, transmission, and propagation aspects of broadcasting.

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Editor-in-Chief
Yiyan Wu
Communications Research Ctr Canada