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Tube Substitutions for:
 1M3
 Electron-Ray Indicator
TypeSubstitutesBase Diagram
1M31N3, 1N38DN
Web References1M3 (Amperex) @ Franks Electron Tubes
1M3 @ RadioMuseum.org


Type 1M3
Electron-Ray Indicator


MECHANICAL DATA
Basing8DN


ELECTRICAL DATA

HEATER CHARACTERISTICS
Heater Voltage1.4Volts
Heater Current0.025A


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