E2218 triode / pentode
|This valve measures 51x19mm overal and has a B9A base
There are two examples of this valve, each marked developmental valve and 13.0V.
|7||Pentode cathode + suppressor grid|
|8||Pentode screen grid|
|9||Pentode control grid||
This file was last modified15:37:00, Tuesday September 02, 2014