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Tube Substitutions for:
1231
Pentode Amplifier
Type
Substitutes
Base Diagram
1231
7V7
Web References
1231 (Sylvania) @ Franks Electron Tubes
1231 @ RadioMuseum.org
Type
1231
Pentode Amplifier
MECHANICAL DATA
Basing
8V
ELECTRICAL DATA
HEATER CHARACTERISTICS
Heater Voltage
6.3
Volts
Heater Current
0.45
A
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