Double-sideband suppressed-carrier transmission (DSB-SC): Transmission in which (a) frequencies produced by amplitude modulation are symmetrically spaced above and below the carrier frequency and (b) the carrier level[?] is reduced to the lowest practical level, ideally completely suppressed.
Note: DSB-SC transmission is a special case of double-sideband reduced carrier transmission.
... 1800, 1804, 1808, 1812, 1816
Source: U.S. Office of the Federal Register (http://www.archives.gov/federal_register/electoral_college/scores.html#1804)
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