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Tube Substitutions for:
UCH4
Triode-Heptode
TypeSubstitutesBase Diagram
UCH420CH4U
Web ReferencesUCH4 (Philips) @ Franks Electron Tubes?
UCH4 (Philips) @ Franks Electron Tubes?
UCH4 (Philips) @ Franks Electron Tubes?
UCH4 @ Radiomuseum


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