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Tube Substitutions for:
DL21
Vacuum Pentode
TypeSubstitutesBase Diagram
DL21MDL21
Web ReferencesDL21 (Philips) @ Franks Electron Tubes?
DL21 (Philips) @ Franks Electron Tubes?
DL21 (Philips) @ Franks Electron Tubes?
DL21 @ Radiomuseum


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