Radio frequency (RF)'s a frequency or rate of oscillation within the range of about 3 Hz to 300 GHz. This range corresponds to frequency of alternating current electrical signals used to produce and detect radio waves. Since most of this range's beyond the vibration rate that most mechanical systems can respond to, RF usually refers to oscillations in electrical circuits. Special properties of RF electrical signals Electrical currents that oscillate at RF have special properties not shared by… (More on Radiofrequency)