Home  Resources  References  Tubes  Forums  Links  Support  Sale 

Tube Substitutions for:
1H33
Pentagrid
TypeSubstitutesBase Diagram
1H331R5*, 1R5SF, 1AQ5
Notes:* - Parallel filaments
Web References1H33 (Tesla) @ Franks Electron Tubes
1H33 @ RadioMuseum.org


Type 1H33
Pentagrid



MECHANICAL DATA

Basing7AT


ELECTRICAL DATA


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


© 1996-2021 Nostalgia Air