Home  Resources  References  Tubes  Forums  Links  Support  Sale 

Tube Substitutions for:
 303
 Current Regulator, Iron in Hydrogen
TypeSubstitutesBase Diagram
303
Web References303 (Osram) @ Franks Electron Tubes?
303 (Marconi) @ Franks Electron Tubes?
303 @ Radiomuseum


© 1996-2021 Nostalgia Air