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loctal tubes and dating
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01-13-2008, 12:11 PM
Were loctal tubes used for a long time? I mean if you come across a device using 7F7s and 7N7s could you guess that it might be more likely to be from a certain decade?
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loctal tubes and dating - by Guest - 01-13-2008, 12:11 PM
[No subject] - by 49Stude63 - 01-13-2008, 12:24 PM
[No subject] - by Ron Ramirez - 01-16-2008, 11:48 PM



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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration