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331A

Information - Help 
ID = 34931
       
Country:
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Tube type:  Transmitting Triode, air cooled   Universal 
Identical to 331A = 805

Base Jumbo 4-pin bayonet Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 10 Volts / If 3.2 Ampere / Direct / Parallel, (AC/DC)
Description

High-mu transmitting triode, graphite anode. 125W, 30MHz, typical mu=40; also used as class B modulator. 4-pin jumbo base.

 
Information source Tube Lore (I)   
 
western_electric_331a.jpg
331A: Worthpoint photo
Fin Stewart

 
331a_so.png
331A: ARRL Handbook 1972
Michael Schlör

 

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