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ID = 69661
United States of America (USA)
Brand: Western Electric Company Inc.; New York (NY)
Developer: Western Electric Company Inc.; New York (NY) 
Tube type:  Transmitting Triode, air cooled   Universal 
  <1925 very rare. ***
Identical to D-80050
Similar Tubes
Normally replaceable-slightly different:
  211D ; CW-1818 ; VT-4B

Base Jumbo 4-pin bayonet (1918)
Was used by Transmittertube (Radio)
Filament Vf 10 Volts / If 3.2 Ampere / Direct / Battery =

Convection cooled 100 watt max anode dissipation; Thoriated tungsten filament, Mu 12.

The "D" series of Western Electric tubes were made as introductory models pending wider use or as interim improvements or modificationsof existing products. They were not listed in the Western Electric commercial catalogs.

Dimensions (WHD)
incl. pins / tip
x 184 x 51 mm / x 7.24 x 2.01 inch
Weight 180 g / 6.35 oz
Information source Tube Lore (II)   p. 248
- - Manufacturers Literature   
Tube Lore (I)

jumbo_4_pin~~14.png D-80050: Fin Stewart
Fin Stewart

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