No person shall knowingly or wantonly operate, or cause to be operated, any machine, device, apparatus or instrument in the City between the hours of 6:00 a.m. and 12:00 midnight, the operation of which shall cause reasonably preventable electrical interference with radio or television reception within the Municipal limits. However, X-ray pictures, examinations or treatments may be made at any time if the machines or apparatus used therefor are properly equipped to avoid all unnecessary or reasonably preventable interference with radio or television reception and are not negligently operated.
This section shall not be held or construed to embrace or cover the regulation of any transmitting, broadcasting or receiving instrument, apparatus or device used or useful in interstate commerce or the operation of such instrument, apparatus or device where licensed by or under the provisions of any act of the Congress of the United States.