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Tube Substitutions for:
4HK5
High-Mu Triode
TypeSubstitutesBase Diagram
4HK54HA5, 4HQ5, 4HM5, 4HQ5
Web References4HK5 (Sylvania) @ Franks Electron Tubes
4HK5 @ RadioMuseum.org


Type 4HK5
High-Mu Triode



MECHANICAL DATA

Basing7GM


ELECTRICAL DATA


HEATER CHARACTERISTICS
Heater Voltage4.2Volts
Heater Current0.3A


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