Note: Please do not link down into my pages. I change this directory structure often and your links will not work correctly.
Tubes with base: 9QB
8278 EL503
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
Thu, 02 Feb 2023 04:55:34 -0700