 CONT: On the pilot episode, when Dave is pushed into the news booth  to give the sports update, while practicing his "radio" voice, Bill  lets him know that hes already on the air by pulling down and  showing Dave the already lit ON AIR sign. Bill then sets the sign on  a shelf of tapes. Dave lets Bill take over the update and leaves. As  Dave is walking out, the sign is back in its original position on  the wall.