form - func
- frequency relay
- frequency resolution
- frequency response
- frequency reuse
- frequency rocking
- frequency run
- frequency runaway
- frequency scan radar
- frequency scanning
- frequency selective voltmeter
- frequency selectivity
- frequency separation
- frequency separator
- frequency shaping
- frequency sharing
- frequency shift
- frequency shift keying
- frequency signaling
- frequency slot
- frequency spacing
- frequency spectrum deregulation
- frequency splitting
- frequency stability
- frequency stabilization
- frequency standard
- frequency standard, primary
- frequency step
- frequency sweep
- frequency swept hologram
- frequency swept holography
- frequency swept imaging
- frequency swing
- frequency synthesis
- frequency synthesizer
- frequency table
- frequency tape
- frequency telegraphy
- frequency telemeter
- frequency to voltage
- frequency to voltage converter
