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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 / Specified voltage 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. 
Information source Taschenbuch zum Röhren-Codex 1948/49   
-- Original-techn. papers.   

vr99a_so.png VR99A: rtt
Anonymous 10 Collector


Just Qvigstad
cv1581vr99a_1_1.png
VR99A: Manufacturer's Literature
Emilio Ciardiello

More ...
Usage in Models 5= 1940 ; 1= 1945

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):6

Collection of

 
vr99a.jpg

VR99A
 

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