Note: Please do not link down into my pages. I change this directory structure often and your links will not work correctly.
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Preferred Substitutes ......................... 4BU8
Substitutes ................................... 4GS8 4HS8
Heater Voltage ................................ 4.2 V
Heater Current ................................ 0.45 A
For other characteristics and typical operation, see 6KF8
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 19:04:33 -0700