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SP18/RR

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ID = 28782
       
Country:
Great Britain (UK)
Brand: Metropolitan-Vickers (Metro-Vick, Cosmos); GB
Developer: Metropolitan-Vickers (Metro-Vick, Cosmos); GB 
Tube type:  Triode, vacuum   Power/Output 
Identical to SP18/RR = AML.2/30
Similar Tubes
Normally replaceable-slightly different:
  B205
First year 1925 Saga of the Vacuum Tube, Tyne page 373
First Source (s)
Aug.1930 : Philips Bulletin R1164, p. 14

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.3 Ampere / Direct / Battery =
Description

Story of Cosmos valves see here

 
Information source 70 Years of Radiotubes and V.   p.196
History of the British Radio Valve to 1940   p.161

b4_triode~~8.png SP18/RR: Fin Stewart
Fin Stewart


Just Qvigstad
Usage in Models 1= 1927

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

Collection of

 
sp18rrcosmos_1_klein_klein.jpg

SP18/RR
 

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