Physics
What frequency range is the high frequency band?
3 kHz
3 to 30 MHz
30 to 300 MHz
10 GHz
3 to 30 MHz
High frequency (HF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) between 3 and 30 megahertz (MHz). It is also known as the decameter band or decameter wave as its wavelengths range from one to ten decameters (ten to one hundred meters).
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