- exponential factor
- external interference
- external signal
- external subroutine
- external symbol
- extra digit
- extreme fading
- Extreme Ultraviolet
- eye diagram
- F2 layer
- fabrication yield
- facsimile carrier
- fading probability
- fading zone
- failure allowance
- failure control
- failure intensity
- false call
- fast line
- fast link
- fast logic
- fast storage
- fast sweep
- fatigue life
- fault clearance
- fault conditions
- fault detection
- fault identification
- fault location
- fault sector
- fault trace
- faulty call
- faulty channel
- faulty connection
- faulty line
- favorable finding
- feed arrat
- feed control
- feed waveguide
- feedback admittance
- feedback AGC
- feedback channel
- feedback circuit
- feedback coupling
- feedback demodulator
- feedback factor
- feedback filter
- feedback generator
- feedback loop
- feedback ratio
- feedback resolution
- feedback signal
- feedback suppressor
- feedback system
- feedback winding
- feeder
- feeder cable
- feeder line
- feeder link
- feeder main
- feet pitch
- female connection
- ferrod
- fetch
- fiberoptic receiver
- field allocation
- field amplifier
- field depth
- field emission
- field frequency
- field mission
- field selection
- field strength
- field telephone
- figure shift
- figures shift
- filament voltage
- file allocation
- file identification
- file mark
- file processing
- file reference
- fill pattern
- filler character
- film container
- film leader
- filter amplifier
- filter assessor
- filter couple
- filter distortion
- filter pole
- filter response
- filter synthesis
- final selector
- financial credit
- ferrite antenna
- ferrite bead
- ferrite core
- FET input
- fiber waveguide