When Dave is pushed into the news booth to give the sports update, while practicing his "radio" voice, Bill lets him know that he's 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.
Ed tells Mr. James that he is late due to traffic on the "freeway". The series, while filmed in California, is set in New York City, where there are expressways and highways, but NO freeways.
Bill talks about the second of a five game series between the New York Knicks and the Orlando Magic. A five game series is common in baseball, but would never happen in basketball.
(at around 25 mins) On the top center of the screen.