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Tube Substitutions for:
7457
Power Tetrode
TypeSubstitutesBase Diagram
74576884F77
Web References7457 (RCA (HB3)) @ Franks Electron Tubes


Type 7457
Power Tetrode



MECHANICAL DATA

BasingF77


ELECTRICAL DATA


HEATER CHARACTERISTICS
Heater Voltage6.3Volts
Heater Current3.2A


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