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Tube Substitutions for:
 VT-121
 Medium Mu Triode (Acorn)
TypeSubstitutesBase Diagram
VT-1215BC
Web ReferencesVT-121 @ RadioMuseum.org


Type VT-121
Medium Mu Triode (Acorn)


MECHANICAL DATA
Basing5BC


ELECTRICAL DATA

HEATER CHARACTERISTICS
Heater Voltage6.3Volts
Heater Current0.15A


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