I think the 2 hour comment got misconstrued. Jeff told me he does use the television occasionally to watch stuff from the 1930's and 40's like cartoons and movies. He commented that he usually never runs the set longer than watching a movie, about 2 hours. Somehow that got reported as you don't want to run the set longer than 2 hours.
BTW this set is definitely from 1936 and contains no miniature tubes, or should I say valves
Another interesting twist in the reporting was that since Jeff only showed the volume, brightness and vertical hold knob, many papers reported that those were the only controls required on the set!
Darryl