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Tube Substitutions for:
3FX7
Medium Mu Twin Triode
TypeSubstitutesBase Diagram
3FX73FW78LK
Web References3FX7 (Toshiba) @ Franks Electron Tubes
3FX7 @ RadioMuseum.org


Type 3FX7
Medium Mu Twin Triode



MECHANICAL DATA

Basing8LK


ELECTRICAL DATA


HEATER CHARACTERISTICS
Heater Voltage3.5Volts
Heater Current0.60A


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