Frequency f is the number of cycles that an RF electromagnetic wave undergoes per second. Frequency band, sometimes denoted by B, is simply a range of frequencies (e.g. the band from 1-2 MHz).
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How radio frequency works. Radio frequency is measured in units called hertz (Hz), which represent the number of cycles per second when a radio wave is transmitted . One hertz equals one cycle per second; radio waves range from thousands (kilohertz) to millions (megahertz) to billions (gigahertz) of cycles per second.
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