fixe - frag
- fixed access
- fixed accumulator
- fixed aeronautical communication
- fixed beacon
- fixed channel assignment
- fixed connection
- fixed control station
- fixed delay
- fixed dialing
- fixed filter
- fixed frequency
- fixed guide
- fixed index method
- fixed instrument
- fixed loop
- fixed membrane
- fixed pickup
- fixed preamble
- fixed preselector
- fixed projection screen
- fixed quantizer
- fixed reception
- fixed reservation
- fixed satellite system
- fixed scrambling
- fixed station
- fixed subnetwork
- fixed transmitter
- fixed-division ratio
- fixed-electric communication
- fixed-format message
- fixed-frequency filter
- fixed-frequency net
- fixed-frequency oscillator
- fixed-frequency station
- fixed-gain amplifier
- fixed-length record
- fixed-microwave auxiliary station
- fixed-pattern noise
- fixed-radio tower
