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ID = 74962
Great Britain (UK)
Brand: Standard Telephones and Cables Ltd. (STC); London, Foots Cray
Tube type:  Triode, vacuum   Power/Output 
Identical to M4205E
Similar Tubes
Normally replaceable-slightly different:
  205D ; 4205E ; R205-D
Other base and data slightly different:

Base UV-Base (4 Pins+Bayonet, USA 1914 WE)
Was used by Industrial
Filament Vf 4.5 Volts / If 1.6 Ampere / Direct / Specified voltage AND current AC/DC
Description The M4205 tube is similar to the 4205E but has the grid and anode specially treated to reduce secondary emission. It was first made with a nickel plated base but this was later changed to Bakelite. Under safe operating conditions, the maximum anode voltage is 400 and anode dissipation 15 watts. 
Dimensions (WHD)
incl. pins / tip
x 108 x 64 mm / x 4.25 x 2.52 inch
Weight 65 g / 2.29 oz
Information source - - Manufacturers Literature   Data sheet dated November 1937

uv_205d.png M4205E: Fin Stewart
Fin Stewart

Just Qvigstad

Collection of



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