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In telecommunications, a carrier signal, carrier wave, or just carrier, is a waveform (usually sinusoidal) that is modulated (modified) with an input signal for the purpose of conveying information.This carrier wave is usually a much higher frequency than the input signal.n the case of single-sideband modulation (SSB), the carrier is suppressed (and in some forms of SSB, eliminated). The carrier must be reintroduced at the receiver by a beat frequency oscillator (BFO).
Mono is âoneâ. which implies one sideband on each side of the carrier â¢ Frequency Modulation (FM) â One frequency (carrier) is speeding up and slowing down â FM is stereo.Spectrum Sidebands â¢ Amplitude Modulation (AM) â One frequency (carrier) is getting louder and softer at another frequency (modulating freq) â AM is mono.