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VR99A

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ID = 8884
       
Country:
Great Britain (UK)
Brand: Common type Great Britain tube/semicond.
Tube type:  Triode-Hexode   Frequency converter   Controlling (mu) 
Identical to VR99A = ECH35 = CV1581 = 10E/757

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Ua)
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Parallel, (AC/DC)
Description Renamed CV1581 as it was previously selected type X66 the VR99. The unmetallised ECH35 was the civilian valve used as the starting specification. 
Literature Taschenbuch zum Röhren-Codex 1948/49   
-- Original-techn. papers.   
 
vr99a.jpg
VR99A: H.C.
Howard Craven

 
vr99a_so.png
VR99A: rtt
Michael Schlör

 
cv1581vr99a_1_1.png
VR99A: Manufacturer's Literature
Emilio Ciardiello


Usage in Models 1= 1940 ; 1= 1941?? ; 1= 1942?? ; 1= 1945

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):4


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