A variable time-equalizer for video-frequency waveform correction

Linke, J.M.

doi:10.1049/pi-3a.1952.0054

Proceedings of the IEE - Part IIIA: Television

1952

DOI: 10.1049/pi-3a.1952.0054

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A variable time-equalizer for video-frequency waveform correction

J.M. Linke

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1957

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Experimental Transversal Equalizer for TD-2 Radio Relay System

Bellows¹,

Graham²

1957

Bell System Technical Journal

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To determine the effect of improved equalization on the performance of TD‐2 radio relay systems, an experimental adjustable transversal equalizer has been developed. The equalizer is based on the echo principle as used in transversal filters, and operates in the 60‐ to 80‐mc frequency band. Seven pairs of adjustable leading and lagging echo terms provide flexibility for simultaneous gain and delay equalization. Directional couplers are used for tapping and controlling the echo voltages. Field experiments have shown that system equalization can be improved appreciably by the use of such equalizers.

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Experimental Transversal Equalizer for TD-2 Radio Relay System

Bellows¹,

Graham²

1957

Bell System Technical Journal

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A Transversal Equalizer for Television Circuits

Sperry¹,

Surenian²

1960

Bell System Technical Journal

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Transmission of television signals over long systems requires a fine degree of equalization. An adjustable type of equalizer to supplement fixed equalizers is discussed. It provides both gain and delay characteristics in the form of harmonically related cosine shapes which are independently adjustable. The design and operation of the equalizer is explained on the basis of paired echo theory. The 336A equalizer used in the L3 coaxial system is discussed as an example of this equalization technique.

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Recent Developments and Utilizations of Test Signals in the Vertica Interval

Johannesen

1967

IEEE Trans. on Broadcast.

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A variable time-equalizer for video-frequency waveform correction

Cited by 5 publications

References 0 publications

Experimental Transversal Equalizer for TD-2 Radio Relay System

Experimental Transversal Equalizer for TD-2 Radio Relay System

A Transversal Equalizer for Television Circuits

Recent Developments and Utilizations of Test Signals in the Vertica Interval

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