AF
CPS
EHF
HF
Hz
MF
RF
SHF
UHF
VHF
VLF
amplitude
antinode
audio frequency
carrier frequency
commonness
crest
crowd
cycles
de Broglie wave
diffraction
electromagnetic radiation
electromagnetic wave
extremely high frequency
fluctuation
frequency band
frequency spectrum
fundamental
fundamental tone
guided wave
harmonic
harmonic motion
hertz
high frequency
in phase
interference
intermediate frequency
intonation
kilocycles
kilohertz
libration
light
longitudinal wave
low frequency
lower frequencies
mechanical wave
medium frequency
megacycles
megahertz
monotone
cardinal
cardinal number
frequent
frequentative
frequenter
channel
component
density
intensity
measurement
mode
output
parameter
phase
range
rate
signal
temperature
transmission
velocity
infrequency