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47

Information - Help 
ID = 2676
       
Country:
United States of America (USA)
Brand:
Tube type:  Vacuum Pentode   Power/Output 
Identical to 47 = P2 = 247 = PZ = UY-47_Japan = UY-247_Japan = A247 = VT-47 = PH247 = CV1772 = VT47_USA = F247 = Z-47 = 38047 = G-47 = 247S = EY647 = NY-247 = 447 = UY247B = UY247 = UY-247 = ER247 = KR47 = Y-247 = CL-47 = NU-47
Similar Tubes
Other shape (e.g. bulb type):
  248 ; M47
Normally replaceable-slightly different:
  47B ; 47E ; 47M ; RES347
Other class quality (otherwise equal):
  1610_RCA
Different connections:
  UX47A
Other base and data slightly different:
  47MG
First year 1931 Radios von gestern, 2. Auflage
First Source (s)
Jun.1931 : -- Collector info (Sammler)
Jun.1931 : 70 Years of Radiotubes and V.
Predecessor Tubes PZ  
Successor Tubes 1932   2A5   42   47MG  

Base UY-Base, 5 Pins (USA, April 1927) (Codex=Hy)
Filament Vf 2.5 Volts / If 1.75 Ampere / Direct / Parallel, (AC/DC)
Tube prices 3 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
  47.png
  47: Courtesy Bureau Belper (De Muiderkring, Bussum)
Michael Schlör
 
47_brunswick.jpg
47: GP
George Papaiz

 
450_1.png
47: Telefunken Werkstattbuch
Wolfgang Bauer

 
47_techdat01.png
47: Sylvania Technical Manual
Peter Hoddow


Usage in Models 22= 1931?? ; 115= 1931? ; 573= 1931 ; 65= 1932?? ; 285= 1932? ; 704= 1932 ; 46= 1933?? ; 54= 1933? ; 240= 1933 ; 25= 1934?? ; 21= 1934? ; 88= 1934 ; 15= 1935?? ; 24= 1935? ; 61= 1935 ; 14= 1936?? ; 10= 1936? ; 11= 1936 ; 1= 1937? ; 1= 1939?? ; 4= 1939? ; 2= 1940?? ; 2= 1942?? ; 1= 1948?? ; 1= 9999?? ; 1= 9999? ; 2= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2388


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