IRE Transactions on Broadcast Transmission Systems

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  • The TV Helical Antenna Adapted to Structural Tower Shapes

    Publication Year: 1958, Page(s):4 - 10
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1911 KB)

    The side-fire helical antenna, successfully used for UHF and VHF high channel television transmission, has now been adapted for low channel VHF service. Investigation of properties of a helical radiator wound around a polygonal supporting structure has made possible the required increased bandwidth and provided directional patterns for special TV coverage applications. Through scale model work, a ... View full abstract»

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  • Co-Channel Television Interference and its Reduction

    Publication Year: 1958, Page(s):3 - 24
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3864 KB)

    The undesired effects of co-channel television interference vary both with the intensity and the frequency of the interfering signal. It is found that there are three types of frequency-variation of objectionability, namely: (1) A progressive decrease of objectionability as the frequency of the undesired signal is shifted away from the carrier frequency of the desired signal, which we have called ... View full abstract»

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  • Reduction of Co-Channel Television Interference By Precise Frequency Control of Television Picture Carriers

    Publication Year: 1957, Page(s):6 - 14
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1550 KB)

    It is a matter of record that the visibility of co-channel interference has maxima and minima at carrier offset frequencies which are a multiple of frame frequency. Subjective tests were made in the laboratory to determine the possible reduction in the visibility of co-channel interference by precise carrier frequency control and the stability requirements on the carrier frequency. The tests show ... View full abstract»

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  • A Novel UHF Television High-Power-Amplifier System

    Publication Year: 1955, Page(s):18 - 26
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3468 KB)

    A novel type of power amplifier, especially developed for high-power UHF monochrome and color television transmitters, is described in this paper. The amplifier applies the type-6448 beam-power tubes for class-B service up to 15-KW peak of sync output with an amplification factor of 15 at 6 megacycles band-width (.5 decibel points) and, for class-C service with a power amplification factor of 30. ... View full abstract»

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  • A Transistor Video Amplifier Having 80 Volts Output

    Publication Year: 1956, Page(s):32 - 37
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2352 KB)

    A transistor video amplifier which has sufficient output signal, swing, and bandwidth to drive a standard picture tube is described. The amplifier consists of three junction transistors in the following configurations (starting at the input end): grounded-collector, grounded-emitter, and common-base. A resistive feedback path is provided from the output of the grounded-emitter stage to the amplifi... View full abstract»

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  • A Transistor Regulated Power Supply for Video Circuits

    Publication Year: 1957, Page(s):32 - 38
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1502 KB)

    A high-efficiency all-transistor regulated power supply for 280 volts and 1.5 amperes is compared with conventional supplies using vacuum tubes. Test results show good characteristics for video use with size and weight reduced by a factor of two. View full abstract»

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  • A Simplified 5 Megawatt Antenna for the UHF Broadcaster

    Publication Year: 1957, Page(s):46 - 51
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2516 KB)

    A stacked arrangement of two UHF five-bay helical antennas is used to provide an antenna system with a power capacity of 120 KW and a power gain of 50. A power gain of 100 is achieved in the maximum direction with horizontal directivity. View full abstract»

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  • Achieving One Megawatt ERP in the UHF-TV Band

    Publication Year: 1955, Page(s):27 - 34
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3511 KB)

    The alternatives are described for achieving one megawatt Effective Radiated Power in the UHF-TV band. The new 0-E 45 KW and 23 KW transmitters are described. The different high power antenna approaches are discussed. Steps towards converting existing 1 KW and 0-E 12 KW stations are explained in detail. View full abstract»

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  • Present Knowledge of Propagation in the VHF and UHF TV Bands

    Publication Year: 1956, Page(s):39 - 47
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5958 KB)

    Since the Ad Hoc report and the Commission's Sixth Report and Order establishing the present TV allocations, the Commission and others have been collecting measurement data on the propagation of signal at TV frequencies. In many cases data is now available where the earlier studies required extrapolation. It is the purpose of this report to review recent measurements and their analysis as they may... View full abstract»

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  • The Retma Color Television Test Stripe Signal

    Publication Year: 1956, Page(s):26 - 29
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1975 KB)

    In a television receiver installation, reflections on the antenna feeder line or multipath transmission to the receiving antenna can give rise to selective reinforcement and cancellation throughout any given channel, so that a relatively non-uniform transmission characteristic results. When a monochrome television receiver is involved, this response characteristic is generally only of secondary in... View full abstract»

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  • A 50 Kilowatt Television Transmitter

    Publication Year: 1956, Page(s):13 - 21
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5666 KB)

    The development and construction of a new 50 Kilowatt Television Transmitter for use on VHF high band channels 7 to 13 is described. The paper deals primarily with the 50 kilowatt final power amplifier since the 5 kilowatt driver section has been in existence for some time and has been described elsewhere. View full abstract»

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  • UHF Satellite Transmitter-Receiver Design & Operation

    Publication Year: 1955, Page(s):67 - 74
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3341 KB)

    A UHF satellite installation is described. Average field strength improvements of nearly 23 db were obtained in a deep shadow area at Waterbury, Connecticut. 80 db of straight RF amplification was used in conjunction with high gain receiving and transmitting antennas on a frequency of 700 Mc/s. View full abstract»

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  • Audio in TV Broadcasting

    Publication Year: 1955, Page(s):1 - 10
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5347 KB)

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  • A Method to Prevent Image Orthicon Burn-In

    Publication Year: 1957, Page(s):15 - 18
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4594 KB)

    A device will be described which reduces ``burn-in'' on an image orthicon tube by as much as 90 per cent. The device is relatively simple and consists of a mechanism to oscillate slowly the lens board of a television camera at a very slow rate. Electrical cancellation of the resulting horizontal motion is accomplished by simple modification to the horizontal centering circuit of the camera. This d... View full abstract»

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  • Television Station Construction

    Publication Year: 1955, Page(s):1 - 4
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  • Equipment Operating Characteristics for Color Television

    Publication Year: 1955, Page(s):35 - 41
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  • Community Television Systems

    Publication Year: 1956, Page(s):17 - 22
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5955 KB)

    Part of the genius of modern technological society is the dynamic ingenuity with which solutions are found to problems thought to be impossible. When the FCC Table of Television allocations was released to the public, there was much cynical scoffing at the television assignments in communities of less than 2500 persons. Yet, today there is a rapidly growing and soundly financed industry providing ... View full abstract»

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  • A Fifteen-Kilowatt Beam Power Tube for UHF Service

    Publication Year: 1955, Page(s):11 - 17
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5391 KB)

    A new beam power tetrode for operation at frequencies up to 1000 Mc is described. Although this type is specifically suited to meet the stringent requirements of television broadcast service, experience indicates its particular usefulness in generating higher powers at frequencies above approximately 200 Mc. View full abstract»

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  • A Cordless Microphone System

    Publication Year: 1956, Page(s):23 - 24
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (434 KB)

    A cordless (radio) microphone system, successfully used by CBS Television, consisting of a small microphone, miniature FM transmitter, special receivers, and a diversity antenna system is described. The need for continued development work to produce smaller, more rugged and reliable components, having as an objective a system with performance and dependability equal to that obtained from standard ... View full abstract»

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  • A Precision Deflection Yoke

    Publication Year: 1955, Page(s):43 - 48
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2838 KB)

    A deflection yoke for an image-orthicon was built entirely from printed circuits and operated in a television camera. With the exception of resistance (which for the printed circuit model was much higher) the parameters of a conventional wire-wound yoke were quite readily reproduced, including inductances per coil of as much as 16 millihenries. The use of wider conductors, improved drafting techni... View full abstract»

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  • Automatic Level Control for Fill Systems

    Publication Year: 1957, Page(s):1 - 5
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  • The Special Applicaticon of the Cathode Ray Oscillograph in Television Broadcast Operation

    Publication Year: 1955, Page(s):42 - 48
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  • Power Amplifiers for Television

    Publication Year: 1955, Page(s):5 - 16
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  • Maintenance of Directional Antennas

    Publication Year: 1957, Page(s):39 - 45
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4803 KB)

    First Page of the Article
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  • The Vitascan Live Flying-Spot Color Scanner

    Publication Year: 1956, Page(s):11 - 25
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (9660 KB)

    The DuMont ``Vitascan'' Color TV system produces live color television pictures of high quality without the use of expensive and complicated color television cameras or highly trained and skilled camera and maintenance crews. It is, in fact, a modern all-electronic version of the earliest forms of mechanical live television pickup which employed the flying-spot scanning principles. View full abstract»

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Aims & Scope

This Transactions ceased publication in 1958. The current retitled publication is IEEE Transactions on Broadcasting.

Full Aims & Scope