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Tube Substitutions for:
6S4
Medium Mu Triode
TypeSubstitutesBase Diagram
6S46S4A
Web References6S4 (Tung-Sol) @ Franks Electron Tubes
6S4 @ RadioMuseum.org


Type 6S4
Medium Mu Triode



MECHANICAL DATA

Basing9AC


ELECTRICAL DATA


HEATER CHARACTERISTICS
Heater Voltage6.3Volts
Heater Current0.6A


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