частота, частотність
pulse repetition frequency (PRF) / pulse-repetition frequency
common frequency
doppler frequency shift
fixed frequency channel
frequency and directional chart
frequency band
frequency intelligence
frequency modulated (FM)
frequency modulation (FM)
frequency range (band)
frequency response
frequency, intensity, time, type (FITT)
frequency-hopping mode
guarded frequency
high frequency (HF)
high frequency direction finder
high frequency over-the-horizon (HF OTH) radar
high-frequency 'X-band' system
intermediate frequency
low frequency (LF)
operating frequency
operational frequency
preset frequency
protected frequency
radio frequency (RF)
radio frequency explosive device
radio frequency identification (RFID)
radio frequency sensor
radio frequency signal
radio frequency target detection
radio frequency weapon
radio frequency weapons