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ID = 33550
United States of America (USA)
Brand: Sparton-Cardon Tubes; Jackson MI
Tube type:  Triode, vacuum   Universal 
Identical to 401 = S27
Similar Tubes
Normally replaceable-slightly different:
Other base:
  AC-373 ; AC-UV_McCullough
Predecessor Tubes AC-UV_McCullough  

Base UX-Base (4 Pins (2 thick, USA 1924, UX) 2 Sidecontacts.
Was used by Radio/TV-reception etc.
Filament Vf 3 Volts / If 1.35 Ampere / Indirect / Specified voltage AC/DC

see Radio College of Canada, Sparton Tube Characteristics.

Dimensions (WHD)
incl. pins / tip
x 134 x 45 mm / x 5.28 x 1.77 inch
Weight 54 g / 1.90 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   NOT CORRECT !
-- Collector info (Sammler)   
Babani, International Radio Tube Encyclopaedia

401_ac_tube_connections.png 401: Fin Stewart
Fin Stewart

Just Qvigstad
401: own collection
Peter den Boer

Collection of



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