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Tube Substitutions for:
DLL21
Double Pentode

Type	Substitutes	Base Diagram
DLL21
Web References	DLL21 (Philips) @ Franks Electron Tubes? DLL21 (Philips) @ Franks Electron Tubes? DLL21 (Philips) @ Franks Electron Tubes? DLL21 @ Radiomuseum

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