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Preferred Substitutes ......................... 1E4
Substitutes ................................... 1H4
Source ........................................ ARRL HB - 1947
Source ........................................ ARRL HB - 1947
Glass octal type used in battery-operated radio receivers as detector or voltage amplifier. Requires an octal socket.
Source ........................................ ARRL HB - 1947
Bulb .......................................... T-9
Base Type ..................................... Octal
EIA Outline ................................... 9-11
EIA Base ...................................... 5S
Source ........................................ ARRL HB - 1947
Heater Voltage ................................ 1.4 V
Heater Current ................................ 0.05 A
Source ........................................ ARRL HB - 1947
For other characteristics and typical operation, see 1G4GT
If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.
(c) 1994-2021 by William A. Beech, NJ7P
Sun, 05 Feb 2023 20:58:58 -0700