Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 59131
Great Britain (UK)
Brand: Osram-Valves GB (not MO-Valves)
Developer: Osram-Valves GB (not MO-Valves) 
Tube type:  Transmitting Triode, air cooled 
  <1925 very rare. ***
Identical to T4_Osram = CV1204 = NT4A

Base Wires Wires only.
Was used by Military and/or Government
Filament Vf 17.5 Volts / If 5.2 Ampere / Direct / Specified voltage AC/DC

400 watt transmitting tube. First made early 1918. British Navy version NT4

Dimensions (WHD)
incl. pins / tip
175 x 330 x mm / 6.89 x 12.99 x inch
Information source British Radio Valves - The Vintage Years: 1904-1925   Pages 128 & 130
Saga of the Vacuum Tube, Tyne   Page 230


You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]

Data Compliance More Information