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Shortwave radio
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====VSB==== [[Vestigial sideband]] transmits the carrier and one complete sideband, but filters out most of the other sideband. It is a compromise between AM and SSB, enabling simple receivers to be used, but requires almost as much transmitter power as AM. Its main advantage is that only half the bandwidth of an AM signal is used. It is used by the Canadian standard [[time signal]] station [[CHU (radio station)|CHU]]. [[Single-sideband modulation#Vestigial sideband (VSB)|Vestigial sideband]] was used for analog television and by [[ATSC standards|ATSC]], the [[8VSB|digital TV]] system used in North America.
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