Nostalgia Air: Tube Substitution for T21

Home Resources References Tubes Forums Links Support Sale

Tube Substitutions for:
T21
Power Tetrode

Type	Substitutes	Base Diagram
T21		T6B
Web References	T21 (Mazda) @ Franks Electron Tubes T21 @ RadioMuseum.org

Type T21
Power Tetrode

MECHANICAL DATA

Basing

T6B

ELECTRICAL DATA

HEATER CHARACTERISTICS

Heater Voltage	6.3	Volts
Heater Current	0.9	A