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Tube Substitutions for:
 12K5
 Space Charge Grid Tetrode
TypeSubstitutesBase Diagram
12K57FD
Web References12K5 (Brimar) @ Franks Electron Tubes
12K5 @ RadioMuseum.org


Type 12K5
Space Charge Grid Tetrode


MECHANICAL DATA
Basing7FD


ELECTRICAL DATA

HEATER CHARACTERISTICS
Heater Voltage12.6Volts
Heater Current0.45A


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