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UY247

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ID = 11770
       
Country:
United States of America (USA)
Brand:
Tube type:  Vacuum Pentode   Power/Output 
Identical to UY247 = 47 = UY-247 = 447 = ER247 = KR47 = Y-247 = NY-247 = CL-47
Similar Tubes
Other shape (e.g. bulb type):
  248 ; NU-47

Base UY-Base, 5 Pins (USA, April 1927) (Codex=Hy)
Was used by Radio/TV-reception etc.
Filament Vf 2.5 Volts / If 1.75 Ampere / Direct / Parallel, (AC/DC)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
uy247_so.png
UY247: ARRL Handbook 1972
Michael Schlör

 

Usage in Models 1= 1931? ; 19= 1931 ; 5= 1932 ; 3= 1933? ; 1= 1934?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):29

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