For what it's worth department... I have a whole milk-crate full of electronic-school modules, each containing 2 455kc IF cans... if they'd do you some good, let me know... also have these 2 JW Miller TV IF cans... Model: 6190-TV 1st. sound IF Model: 6191-TV 2nd. sound IF 4.5 mc I'm pretty sure. Later, Tom - WAØEAJ - Denver