Fabrication system and method having inter-apparatus transporter
Facsimile transmission method and system
False framing detector
Fast real-time public key cryptography
Fault location system for a repeatered PCM transmission system
Filter and demodulation arrangement
Flying printing system using type belt
FM television telephone system
Fourier masking analog signal secure communication system
Frame synchronizer
Frame synchronizing device
Framing circuit for digital receiver
Frequency and phase control system
Frequency band converter
Frequency multiplex system for transmission of telephone and vid
Frequency or time domain speech scrambling technique and system
Frequency synchronizing system for satellite communication
Frequency-shift digital data link and digital frequency detectio
FSK Transmitter having frequency band-limitation
Full duplex data transmission system using two speeds of diphase