High frequency is the ITU-designated range of radio frequency electromagnetic waves between 3 and 30 MHz . Also known as the decameter band or decameter wave as the wavelengths range from one to ten decameters.
High frequency is the ITU-designated range of radio frequency electromagnetic waves between 3 and 30 MHz . Also known as the decameter band or decameter wave as the wavelengths range from one to ten decameters.