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Tube Substitutions for:
 A40
 Power Amplifier Triode
TypeSubstitutesBase Diagram
A404Q
Web ReferencesA40 (Mazda) @ Franks Electron Tubes
A40 @ RadioMuseum.org


Type A40
Power Amplifier Triode


MECHANICAL DATA
Basing4Q


ELECTRICAL DATA

HEATER CHARACTERISTICS
Heater Voltage15Volts
Heater Current0.4A


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