Whoever broadcasts by means of any radio or television station for which a license is required by any law of the United States, or whoever, operating any such station, knowingly permits the broadcasting of, any advertisement of or information concerning any lottery, gift enterprise, or similar scheme, offering prizes dependent in whole or in part upon lot or chance, or any list of the prizes drawn or awarded by means of any such lottery, gift enterprise, or scheme, whether said list contains any part or all of such prizes, shall be fined under this title or imprisoned not more than one year, or both. Each day's broadcasting shall constitute a separate offense.