The provisions of this act shall not apply to:
1. Any receiver of radio waves of any frequency lawfully licensed by any state or federal agency;
2. Any such device owned or operated by the federal or state government or any political subdivision used by employees thereof in their official duties, or the sale of any such device to law enforcement agencies for use in their official duties; or
3. Any citizens band radio.
Laws 1981, c. 270, § 2.