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AT250

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ID = 57824
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Transmitting Triode, air cooled 
  <1925 very rare. ***
Identical to AT250

Base Wires Wires only.
Was used by Military and/or Government
Filament Vf 9.6 Volts / If 3.4 Ampere / Direct / Specified voltage AND current AC/DC
Information source British Radio Valves - The Vintage Years: 1904-1925   Page 77
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