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Tube Substitutions for:
5678
Pentode Amplifier

Type	Substitutes	Base Diagram
5678	CK569AX	1AD4
Web References	5678 (Mazda-Belvu) @ Franks Electron Tubes 5678 (Philips) @ Franks Electron Tubes 5678 (Tung-Sol) @ Franks Electron Tubes 5678 @ RadioMuseum.org

Type 5678
Pentode Amplifier


MECHANICAL DATA

Basing

1AD4

ELECTRICAL DATA

HEATER CHARACTERISTICS

Heater Voltage	1.25	Volts
Heater Current	0.05	A

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