Q signal

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Q signal

[′kyü ‚sig·nəl]
(communications)
A three-letter abbreviation starting with Q, used in the International List of Abbreviations for radiotelegraphy to represent complete sentences.
(electronics)
The quadrature component of the chrominance signal in color television, having a bandwidth of 0 to 0.5 megahertz; it consists of +0.48(R-Y) and +0.41(B-Y), where Y is the luminance signal, R is the red camera signal, and B is the blue camera signal.