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Tube Substitutions for:
 6391
 Sharp-Cutoff Pentode
TypeSubstitutesBase Diagram
639174346391
Web References6391 (Mullard) @ Franks Electron Tubes


Type 6391
Sharp-Cutoff Pentode


MECHANICAL DATA
Basing6391


ELECTRICAL DATA

HEATER CHARACTERISTICS
Heater Voltage6.3Volts
Heater Current0.2A


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