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  1. What frequency range is the high frequency band?

    2. A.

     3 kHz
    B.

     3 to 30 MHz
    C.

     30 to 300 MHz
    D.

     10 GHz

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    Answer : Option B

    Explanation :

    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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