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Carrier frequency is a technical term used to indicate:
- In telecommunication systems
- Vaguely speaking, the center frequency or the frequency of a carrier wave (radio wave)
- The "nominal frequency" or the center frequency of an analog frequency modulation, phase modulation, or double-sideband suppressed-carrier transmission (DSB-SC) (AM-suppressed carrier), radio wave
- In very technical language: The frequency of the unmodulated electromagnetic wave at the output of a conventional amplitude-modulated (AM-unsupressed carrier), or frequency-modulated (FM), or phase-modulated (PM) radio transmitter
- In very technical language: The nominal frequency or center frequency of various kinds of radio signals with digital modulation -- provided that the message bit stream is a random uncorrelated sequence of equally probable ones and zeroes ("marks" and "spaces")
- In molecular biology
- The rate of occurrence within a living population of a broken chromosome that causes a genetic disorder
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