EntityQ3867059· pop 6· linked from 132 articlesmultiple frequency-shift keyingSign in to savevariation of frequency shift keying that uses more than two frequenciesConnectionsmodulationEntityfrequency modulationEntityOrthogonal frequency-division multiplexingEntityDual-tone multi-frequency signalingEntityfadingEntityRussianEntityInternational Standard Book NumberEntityauroraEntityInternational Standard Serial NumberEntitymodemEntityQ364EntitydecibelEntityJoseph Hooton TaylorEntityamateur radioEntityamplitude modulationEntityultra high frequencyEntityvery high frequencyEntitypulse-code modulationEntitymultiplexingEntitysignal-to-noise ratioEntityCategoriesQuantized radio modulation modesTelephony signals