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Tube Substitutions for:
7X7
Twin Diode - High Mu Triode
TypeSubstitutesBase Diagram
7X7XXFM
Web References7X7 (RCA (HB3)) @ Franks Electron Tubes
7X7 (NU) @ Franks Electron Tubes
7X7 @ RadioMuseum.org


Type 7X7
Twin Diode - High Mu Triode



MECHANICAL DATA

Basing8BZ


ELECTRICAL DATA


HEATER CHARACTERISTICS
Heater Voltage6.3Volts
Heater Current0.3A


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