Possible Clues:

• Channel that might feature 'The Philadelphia Story,' briefly
• Channel that runs films from the good old days when film was film and Orson Welles weighed under a metric ton
• Channel with timeless films, briefly
• Where to see old MGM movies
• Its debut airing was "Gone With the Wind"
• It shows many B&W pictures
• Channel that shows RKO films
• Airer of many old MGM films
• Cable channel for old movies
• Network whose first broadcast was 'Gone With the Wind'