Used for amateur radio,CB radio,and international broadcasts such as BBC and Voice of America,________ propagation is a signal from an earth based antenna reflected from the ionosphere back down to earth.

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The Answer of Used for amateur radio,CB radio,and international broadcasts such as BBC and Voice of America,________ propagation is a signal from an earth based antenna reflected from the ionosphere back down to earth.

Used for Amateur Radio,CB Radio,and International Broadcasts Such as BBC