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E2218 triode / pentode

Size
This valve measures 51x19mm overal and has a B9A base

There are two examples of this valve, each marked developmental valve and 13.0V.

PinFunction
1Triode anode
2Triode grid
3Triode cathode
4Heater
5Heater
6Pentode anode
7Pentode cathode + suppressor grid
8Pentode screen grid
9Pentode control grid

E2218
E2218

This file was last modified23:14:07, Friday November 02, 2012