12-17-2008, 04:51 PM
Thanks. Yes, they're close but no match. Someone today told me it might be a 7181, but I can't find another picture of one to confirm that. All I know is that the chassis has a serial number on it, 7S-1089. Also, the receiver takes these seven tubes: 5Y3, 6C5, 6F6, 6K7, 6K7, 6L7, 6Q7