(1) The owner, licensee or operator of a visual or sound radio broadcasting station or network of stations, and the agents or employees of any such owner, licensee or operator, shall not be liable for any damages for any defamatory statement published or uttered in or as a part of a visual or sound radio broadcast, by any person other than the owner, licensee or operator, or some agent or employee thereof.
(2) In no event, however, shall any owner, licensee or operator, or the agents or employees of any such owner, licensee or operator of such a station or network of stations, be held liable for any damages for any defamatory statement uttered over the facilities of such station or network by or on behalf of any candidate for public office, unless such statement is made by an agent or employee of the station in the course of his employment.