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ID = 30888
Great Britain (UK)
Brand: Ediswan, Siemens Edison Swan Electric Co.; London
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to ET30
Similar Tubes
Normally replaceable-slightly different:
  10E/8738 ; CV1030 ; T250 ; VT30

Was used by Transmittertube (Radio)
Filament Vf 13 Volts / If 5.5 Ampere / Direct / Specified voltage AC/DC

This tube is designed for operation at frequencies up to 20 Mc/s

Dimensions (WHD)
incl. pins / tip
x 300 x 120 mm / x 11.81 x 4.72 inch
Information source - - Manufacturers Literature   Ediswan Mazda Valves 1949-1950 catalog
Babani, International Radio Tube Encyclopaedia   P. 202 & 203
-- Original-techn. papers.


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