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Single-sideband modulation
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== Amplitude-companded single-sideband modulation ([[ACSSB]]) == Amplitude-companded single sideband ([[ACSSB]]) is a narrowband modulation method using a single sideband with a pilot tone, allowing an expander in the receiver to restore the amplitude that was severely compressed by the transmitter. It offers improved effective range over standard SSB modulation while simultaneously retaining backwards compatibility with standard SSB radios. ACSSB also offers reduced bandwidth and improved range for a given power level compared with narrow band FM modulation.
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