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400_McCullough-3volt

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ID = 35282
       
Country:
United States of America (USA)
Brand: McCullough, Frederick, S. Co.; Wilkinsburg, later Sales Company; Pittsburg
Developer: McCullough, Frederick, S. Co.; Wilkinsburg, later Sales Company; Pittsburg 
Tube type:  Triode, vacuum   Universal 
  Ca. 1925 up to 1945 rare.
Identical to 400_McCullough-3volt
Similar Tubes
Heater different:
  400_McCullough-4volt
Successor Tubes 401_McCullough  
Base UV-Base (4 Pins+Bayonet, USA 1914 WE) 2 Top contacts.
Was used by Radio/TV-reception etc.
Filament Vf 3 Volts / If 1 Ampere / Indirect
Dimensions (WHD)
incl. pins / tip		 41 x 130 x mm / 1.61 x 5.12 x inch
Weight 46 g / 1.62 oz
Information source - - Manufacturers Literature   
Tube Lore (II)   p. 33
-- Collector info (Sammler)
uv4_mccullough.png 400_McCullough-3volt: own collection
Peter den Boer

Just Qvigstad 		usa_mccullough_400_use_1.png
400_McCullough-3volt: leaflet in tubebox
Otto Frosinn
More ...

Collection of

Otto Frosinn (D)
 
usa_mccullough_400.jpg

 
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