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MT11SW

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ID = 59460
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Developer: Marconi-Osram - (Valves/Tubes); GB 
Tube type:  Transmitting Triode, air cooled 
  Ca. 1925 up to 1945 rare.
Identical to MT11SW

Base SPECIAL TUBEBASE in general Top contact with a cap.
Was used by Transmittertube (Radio)
Filament Vf 10 Volts / If 5.5 Ampere / Direct / Specified voltage AC/DC
Description

Special short wave tube with molybdenum anode. 60 watts output with 1.5 kv anode volts. Slightly bigger than the MT11 tube and fitted with protective straps on the glass bulb. Base of thes tube was ebonite with the filament contacts from two "feet" at the bottom.The grid was from a center contact in the base and the anode from a top cap. See photo of MT3 tube, which has the glass bulb similar but smaller.

 
Dimensions (WHD)
incl. pins / tip
105 x 220 x mm / 4.13 x 8.66 x inch
Information source The Saga of Marconi Osram Valve   page 79 & 80
- - Manufacturers Literature   1936 Marconi Valve catalog.

mt3~~2.png MT11SW: Fin Stewart
Fin Stewart

 
mt11sw.jpg

 

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