surf - tape
- surface
- surface acoustic wave
- surface acoustic wave correlator
- surface barrier
- surface conductance
- surface defect
- surface density
- surface discharge
- surface layer
- surface of constant phase
- surface of the parabolic antenna
- surface photo-effect
- surface potential
- surface ray
- surface resistance
- surface wave
- surface wave exciter
- surface wave reception
- surface waves
- surface-acoustic wave filter
- surface-wave antenna
- surface-wave propagation
- surge limiter
- surpress spurious radiation
- surround with the amplifier agc circuit
- surveillance
- surveillance of electromagnetic environment
- surveillance radar
- susceptance
- sustain oscllation
- sustained overload
- swamp memory
- sweep
- sweep frequency
- sweep frequency generator
- sweep generator
- sweep linearity
- sweep oscillator
- sweep speed
- sweep synchronization
