FACCH Fast Associated Control Channel

FANS Future Air Navigation System

FAS Frais d'Accès aux Services

FCC Federal Communications Commission (USA)

FCCH Frequency Control Channel

FCS Fast Circuit Switching

FDM Frequency Division Multiplexing

FDPSK Frequency Differential Phase Shift Keying

FEC Forward Error Correction

FM Frequency Modulation (same as MF)

FPLMTS Future Public Land Mobile Telecommunications System

FPS Fast Packet Switching

FSK Frequency Shift Keying

FT3 Fiber To The Terminal

FT File Transfer

FT Frame Transfer

FTAM File Transfer Access Management

FTP File Transfer Protocol

FTPD File Transfer Protocol Daemon