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ID = 60142
Tube type:  Beam Power Tube   beam power   VHF 
Identical to CV3879 = 4-400A = 8438

Base SPECIAL TUBEBASE in general Top contact with a cap.
Was used by Military and/or Government
Filament Vf 5 Volts / If 14.1 Ampere / Direct

The CV3879 spec refers to JAN 4-400A / 8438 but probably European made equivalents were accepted under the same spec.

Information source -- Original-techn. papers.   
-- Collector info (Sammler)   
CV3879: ARRL Handbook 1972
Michael Schlör


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