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Tube Database (7,341 tube types · 1,270 archive entries)

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Tube record

TT21

Manufacturer
M-O Valve Co. Ltd
Brand
G.E.C.

This archive entry is for the TT21 vacuum tube. Manufacturer: M-O Valve Co. Ltd. Brand: G.E.C.. It includes 3 photos and 13 recorded physical attributes. Archive ID: u72hn5f6.

Base
Silver Metal
Bottle Height
Tall Bottle
Bottle Shape
Fat Bottle
Code On Tube
6938Z
Country
England
Getter
Side Getter
Glass Color
Clear Glass
Mica
Triple Mica
Archive ID
u72hn5f6
Pin Color
Silver Pins
Plate Color
Black
Year
1969

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KT66

Maker
M-O Valve Co. Ltd
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KT88

Maker
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M-O Valve Co. Ltd
Brand
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