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401_McCullough

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ID = 13538
       
Country:
United States of America (USA)
Brand:
Developer: McCullough, Frederick, S. Co.; Wilkinsburg, later Sales Company; Pittsburg 
Tube type:  Triode, vacuum   Universal 
  Ca. 1925 up to 1945 rare.
Identical to 401_McCullough = 225A
First year 1926 Saga of the Vacuumtube, Tyne
First Source (s)
25.Jul.1925 : Saga of the Vacuumtube, Tyne
Predecessor Tubes 400_McCullough-3volt  
Successor Tubes 227  

Base UX-Base (4 Pins (2 thick, USA 1924, UX) (Codex=Bo) 2 Top contacts
Was used by Radio/TV-reception etc.
Filament Vf 3 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC) /
Description

Made by Kellogg for McCullough Sales Co.(McCullough was the inventor). Later (from 1929 on) manufactured by A.C.Neon Corp. of N.Y.City.
Very early AC tube. Battery set could be upgraded without deep modification, since the filament terminals were overhead, apart from the Chassis and its wiring.
Codex lists other 400' types, but not this AC type with indirect heated filament. The AC type 401 was made/sold by McCullough, Kellogg, Marathon, Marvin, and Sovereigh.

 
Text in other languages (may differ)
Dimensions (WHD)
incl. pins / tip
42 x 135 x mm / 1.65 x 5.31 x inch
Weight 52 g / 1.83 oz
Tube prices 1 Tube prices (visible for members only)
Literature Saga of the Vacuumtube, Tyne   Radio News

  usa_401_kellogg_typ.use.png
  401_McCullough: leaflet with tube
Otto Frosinn
 
401_kellogg023_klein.jpg
401_McCullough
Geri Meier

 
usa_401_kellogg_sockel_1.png
401_McCullough: O.F.
Otto Frosinn

 
tc-401televocal.png
401_McCullough: Vintage Electronic catalog
Geri Meier


Usage in Models 3= 1926 ; 9= 1927 ; 1= 1928?? ; 1= 1928? ; 1= 1928

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):15


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