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Information - Help 
ID = 65144
United States of America (USA)
Developer: Westinghouse El. & Mfg. Co. - see also Canadian W. 
Tube type:  Half-Wave Vacuum Rectifier   Power-supply 
  Ca. 1925 up to 1945 rare.
Identical to X281 = NX-281 = CX381 = UX281 = 81 = 281

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.
Filament Vf 7.5 Volts / If 1.25 Ampere / Direct
Dimensions (WHD)
incl. pins / tip
x 139 x 60 mm / x 5.47 x 2.36 inch
Weight 63 g / 2.22 oz
Information source - - Manufacturers Literature   
-- Collector info (Sammler)   

424_2~~2.png X281: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad
X281: own collection
Peter den Boer

Collection of



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