06-02-2014, 07:04 PM
Some tubes have the cathode pinched closed at the top so you cannot see the filament glowing where as others don't and you can see the filament, it makes no difference.
Gregb
Gregb
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39/44 tube
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Messages In This Thread
39/44 tube - by dirkbuddy - 06-02-2014, 07:01 PM
RE: 39/44 tube - by gregb - 06-02-2014, 07:04 PM
RE: 39/44 tube - by dirkbuddy - 06-02-2014, 07:20 PM
RE: 39/44 tube - by gregb - 06-02-2014, 08:10 PM
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