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NR68

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ID = 14562
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Double Diode-Triode   Audio Frequency 
  Ca. 1925 up to 1945 very rare. ***
Identical to NR68 = CV587 = W1526 = VT194_GPO = DH63
Similar Tubes
Normally replaceable-slightly different:
  6Q7G

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Uf) Top contact with a cap.
Was used by Military and/or Government
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Specified voltage AND current AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
Babani, International Radio Tube Encyclopaedia   Pages 122 & 123

cv5876qgnr68_appa_1.png
NR68: Manufacturer's Literature
Emilio Ciardiello

6q7_6.png NR68: Manufacturer's Literature
Emilio Ciardiello

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Just Qvigstad
cv5876qgnr68_1_1.png
NR68: Manufacturer's Literature
Emilio Ciardiello

More ...
Usage in Models 1= 1941?

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

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