Adaptive Frequency Hopping

frequency-hopping mode

hedge-hopping flight

digital adaptive technique for efficient communications

multi-spectral adaptive networked tactical imaging sensor

multi-spectral adaptive networked tactical imaging system

adaptive focal plane array

distortion adaptive receiver

adaptive clutter attenuator (ACA)

pulse repetition frequency (PRF) / pulse-repetition frequency

common frequency

doppler frequency shift

fixed frequency channel

frequency

frequency and directional chart

frequency band

frequency intelligence

frequency modulated (FM)

frequency modulation (FM)

frequency range (band)

frequency response

frequency, intensity, time, type (FITT)

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