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Tube Substitutions for:
 QQE03/20
 Double Tetrode
TypeSubstitutesBase Diagram
QQE03/206252
Web ReferencesQQE03/20 (Philips) @ Franks Electron Tubes
QQE03/20 (Tesla) @ Franks Electron Tubes
QQE03/20 @ RadioMuseum.org


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