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Tube Substitutions for:
12H4
Medium-Mu Triode
Type
Substitutes
Base Diagram
12H4
12G4
Web References
12H4 (Tung-Sol) @ Franks Electron Tubes
12H4 (Sylvania) @ Franks Electron Tubes
12H4 @ RadioMuseum.org
Type
12H4
Medium-Mu Triode
MECHANICAL DATA
Basing
7DW
ELECTRICAL DATA
HEATER CHARACTERISTICS
Heater Voltage
12.6/6.3
Volts
Heater Current
0.15/0.30
A
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