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ID = 35870
United States of America (USA)
Brand: Chatham Electronics; Newark, NJ
Tube type:  Triple Triode   Power-supply 
Identical to 6337
Similar Tubes
Multiple differences or of other kind:
  7241 ; 7242 ; CH1068

Base Jumbo 4-pin bayonet (1918) Top contact with a cap.
Was used by Technology / Measurement
Filament Vf 6.3 Volts / If 7.25 Ampere / Indirect

Low-mu power triple triode, designed as regulator tube. Mu 2.7, 80W total plate dissipation, 450mA plate current. Hard glass bulb with Jumbo 4 pin base and top cap. Tube Lore II, page 106, has this tube having a "7 pin giant base"

Information source - - Manufacturers Literature   Electronics - August, 1954
Tube Lore (I)   
Tube Lore (II)

Just Qvigstad

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