#radio_frequency__radiofrequency  an electromagnetic wave frequency between audio and infrared
  supertype:  #frequency__frequence__oftenness__oftennes  the number of occurrences within a given time period (usually 1 second); "the frequency of modulation was 40 cycles per second"
  part of:  #electromagnetic_spectrum
  subtype:  #extremely_low_frequency__extremelylowfrequency__ELF  below 3 kilohertz
  subtype:  #very_low_frequency__VLF  3 to 30 kilohertz
  subtype:  #low_frequency__lowfrequency__LF  30 to 300 kilohertz
  subtype:  #medium_frequency__MF  300 to 3000 kilohertz
  subtype:  #high_frequency__HF  3 to 30 megahertz
  subtype:  #very_high_frequency__VHF  30 to 300 megahertz
  subtype:  #ultrahigh_frequency__ultrahighfrequency__UHF  300 to 3000 megahertz
  subtype:  #superhigh_frequency__superhighfrequency__SHF  3 to 30 gigahertz
  subtype:  #extremely_high_frequency__EHF  30 to 300 gigahertz

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