Is that a new whistle I hear. . . . . . .it sure is! We have been watching some 611 videos on YouTube and from our videos we took and thought that one whistle would sound great on our model. The whistle you hear on this HO Scale 611 is a custom built whistle we made from a video back in 1992 when 611 was running excursions on the Norfolk Southern before the steam program was ended a few years later. This is a great sounding whistle and we are glad to have it on this locomotive! What do you think