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Tube Substitutions for:
 U31
 Half-Wave Vacuum Rectifier
TypeSubstitutesBase Diagram
U3125Z4GT
Web ReferencesU31 (Marconi) @ Franks Electron Tubes
U31 (Marconi) @ Franks Electron Tubes
U31 @ RadioMuseum.org


Type U31
Half-Wave Vacuum Rectifier


MECHANICAL DATA
Basing5AA


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