This valve is an unusual variant of the disc seal triode. The type designation is military in origin. The overall apparatus consists of the valve and an external cavity.![](../pics/aaa0553a.jpg)
The gap between the grid mesh and the flat end of the shaped copper anode can clearly be seen.![](../pics/aaa0553b.jpg)
In this picture the close spaced gold coloured mesh grid can be seen as well as the shape of the external anode.The co-axial envelope is 40 mm in diameter at its widest, and overall it is 72 mm tall.Reference: Observation. |
Updated January 18, 2013.
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