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ID = 19344
Tube type:  Gas Triode 
  <1925 very rare. ***
Identical to Round_Type-C
Similar Tubes
Other base:
First year 1913 History of the British Radio Valve to 1940 Thrower page 32
Successor Tubes Round_Type-N  

Base Swan-Bayonett size not known

Towards the end of 1911, Harold J. Round of the Marconi Company designed diode valves but suspended his work until November 1912 when he also did some work on triodes. The first successful soft valves of Round were produced in 1913. The valve was probably influenced by the soft valve of von Lieben, Reisz and Strauss since there were some agreements between Marconi and Telefunken at that time. Type C was also used for a r.f. amplifier in direction finding equipment which went into service in 1914.

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Usage in Models 1= 1914

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

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