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ID = 42445
Tube type:  Beam Power Tube   beam power   Text 
Identical to 3D21WB
Similar Tubes
Other class quality (otherwise equal):

Base Octal (Int.Octal, IO) K8A, USA 1935 Top contact with a cap.
Was used by Military and/or Government
Filament Vf 12.6 Volts / If 0.85 Ampere / Indirect
Description Pulse Beam Power Tetrode.
Ruggedized version of 3D21B. 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
38 x 119 x mm / 1.50 x 4.69 x inch
Weight 113 g / 3.99 oz
3D21WB: Meine Sammlung
Rudolf Osterkamp

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3D21WB: Tung-Sol
Götz Linss

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3D21WB: Tung-Sol
Götz Linss

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