List of abbreviations: F

FAA Federal Aviation Administration (USA)
FAGS Federation of Astronomical and Geophysical Services
FAST Fundamental Astronomy by Space Techniques Consortium
FB Base station (in a mobile radio system)
FBW Fractional Bandwidth
FCC Federal Communications Commission (USA)
FDD Frequency Division Duplex
FDP Fraction of Degradation of Performance
FDMA Frequency Division Multiple Access
FEC Forward Error Correction
FM (Working Group) Frequency Management (ECC)
FM Frequency Modulation
FMCS Frequency Management Sub-Committee (NATO)
FPLMTS Future Public Land Mobile Telecommunication System (see UMTS)
FS Fixed Service
FSK Frequency-Shift Keying
FSS Fixed Satellite Service
FT France Télécom (F)
FWA Fixed Wireless Access
FX Fixed Service