Discussion
Full-carrier amplitude modulation is also written as _____ in the standard abbreviations.
Answer: C
It is DSB-FC, double sideband full carrier, with DSB-SC being the suppressed-carrier form, SSB-SC single sideband suppressed carrier, and VSB vestigial sideband. The abbreviations are worth knowing because data sheets and standards use them without expansion, and mistaking DSB-FC for DSB-SC changes both the receiver required and the power budget by a large factor. All four describe amplitude modulations, differing only in what has been removed from the spectrum before transmission.
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