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Tube Substitutions for:
 YL1020
 Double Tetrode
TypeSubstitutesBase Diagram
YL10208118, QQZ03-20
Web ReferencesYL1020 (Telefunken) @ Franks Electron Tubes?
YL1020 (Mullard) @ Franks Electron Tubes?
YL1020 @ Radiomuseum


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