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Tube Substitutions for:
QQE06/40
Double Tetrode
TypeSubstitutesBase Diagram
QQE06/405894
Web ReferencesQQE06/40 (Philips) @ Franks Electron Tubes
QQE06/40 (Philips) @ Franks Electron Tubes
QQE06/40 @ RadioMuseum.org


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