Home  Resources  References  Tubes  Forums  Links  Support  Sale 

Tube Substitutions for:
4-400A
Power Tetrode
TypeSubstitutesBase Diagram
4-400A5BK
Web References4-400A (RCA (HB3)) @ Franks Electron Tubes
4-400A (Eimac) @ Franks Electron Tubes


Type 4-400A
Power Tetrode



MECHANICAL DATA

Basing5BK


ELECTRICAL DATA


HEATER CHARACTERISTICS
Heater Voltage5Volts
Heater Current14.5A


© 1996-2021 Nostalgia Air