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Federal Counterintelligence Service
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government to carry out a large-scale military invasion of the republic the next month. ==Background== In the summer of 1994 the Federal Counterintelligence Service (FSK) began active and open co-operation with the Chechen opposition leaders. Forces of Umar Avturkhanov (former officer of the Soviet MVD) and [[Beslan Gantemi |
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frequency shift keying
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ransmission # The first transmission of speech by pulse code modulation (PCM) # The first use of companded PCM # The first examples of multilevel frequency shift keying (FSK) # The first useful realization of speech bandwidth compression # The first use of FSK - FDM (Frequency Shift Keying-Frequency Division Multiplex) as a viable transmission method over a fading mediu |