Frequency-shift keying
MODULATION SCHEME FOR TRANSMISSIONS
Frequency shift keying; AFSK; Audio frequency-shift keying; Mark frequency; Mark tone; Space tone; Space frequency; Frequency Shift Keying; Audio frequency shift keying; Gaussian frequency-shift keying; Audio fsk; FSK standards for use in Caller ID and remote metering; Fsk standards for use in caller id and remote metering; GFSK; BFSK; GFSK modulation
Frequency-shift keying (FSK) is a frequency modulation scheme in which digital information is transmitted through discrete frequency changes of a carrier signal., p 509 The technology is used for communication systems such as telemetry, weather balloon radiosondes, caller ID, garage door openers, and low frequency radio transmission in the VLF and ELF bands.