frequency-shift keying

(redirected from Mark frequency)

frequency-shift keying

[′frē·kwən·sē ‚shift ′kē·iŋ]
(communications)
A form of frequency modulation used especially in telegraph, data, and facsimile transmission, in which the modulating wave shifts the output frequency between predetermined values corresponding to the frequencies of correlated sources. Abbreviated FSK. Also known as frequency-shift modulation; frequency-shift transmission.
References in periodicals archive ?
Table Operator of CDMA in Indonesia Operator Trade Mark Frequency Telkom Telkom Flexi 800 Mhz and 1900 MHz Indosat Star One 800 Mhz and 1900 MHz Bakrie Telecom Esia 800 MHz Mobisel -- 450 MHz Wireless Indonesia -- 2.