General › G8 Signals and Emissions › G8A07
G8A07
Which of the following phone emissions uses the narrowest bandwidth?
Pick an answer to check it.
Answer: A. Single sideband
Single sideband sends only one sideband and no carrier, so it needs only about 2 to 3 kHz. Vestigial sideband, PM, and FM all occupy more spectrum.
Tip: SSB = skinniest phone signal.