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U149

Information - Help 
ID = 19109
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
Identical to U149 = 7Y4

Base Loctal-8, B8G (Sylvania, 1938)
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.5 Ampere / Indirect / Parallel, (AC/DC)
Information source Universal Vade-Mecum, Electron Valves and Semiconductor Devices   
Taschenbuch zum Röhren-Codex 1951   Nachtrag 1952
 
u149.jpg
U149: RFJ
Roy Johnson

 
u149_so.png
U149: rtt
Michael Schlör

 
u149babanidoc.png
U149: Babani 1949-1951
Patrice Zeissloff


from Just Qvigstad

Usage in Models 3= 1950?? ; 2= 1950 ; 1= 1951? ; 1= 1952? ; 4= 1954

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):11


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