Factual error: When Shep and his partner are looking for Frank on the docks, the camera pans to the left and we see a flash of the World Trade Center just before the cameraman catches his error. It was built between 1970 and 1977, not 1969.
Great sites
Mistakes
When Frank has survived the Buxton fire and is trying to reach his son in the future over the radio, his son from that time walks in and sits on Frank's knee. He takes a chewing gum out of the silver wrapper in his right hand, but in the following shot it is now in his left. See more...
Frequency (2000)
Directed by Gregory Hoblit, starring Andre Braugher, Dennis Quaid, Elizabeth Mitchell, James Caviezel, Noah Emmerich (add more)
Frequency mistakes
Factual error: The radio used in the film is a Heathkit SB-301 receiver only, and is, in reality, incapable of transmitting.
Continuity: After the first time the mother disappears from the family photo, and the father and son are talking after the father "saves" the first nurse, there is a wide shot of the board with the family picture on it - and it shows the mother in the picture. When the camera zooms in on the picture, the mother is gone again.