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38

Information - Help 
ID = 3111
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Vacuum Pentode   Power/Output 
Identical to 38 = 138A = UY38A = ER238 = VT-38 = PH238 = UY38
Similar Tubes
Normally replaceable-slightly different:
  38038
Other class quality (otherwise equal):
  CV712
First year 1931 Radios von gestern, 2. Auflage
First Source (s)
Jun.1931 : -- Collector info (Sammler)
Successor Tubes 41  

Base UY-Base, 5 Pins (USA, April 1927) (Codex=Hfo) Top contact with a cap
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect /
Tube prices 0 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

  38.png
  38: Internet
Miguel Angel Trujillo-Rodriguez
 
38_2.jpg
38: eigene Sammlung
David Pfister

 
453_1.png
38: Telefunken Werkstattbuch
Wolfgang Bauer

 
38_techdat01.png
38: Sylvania Technical Manual
Peter Hoddow


Usage in Models 2= 1930?? ; 2= 1931?? ; 20= 1931? ; 34= 1931 ; 7= 1932?? ; 36= 1932? ; 58= 1932 ; 12= 1933?? ; 13= 1933? ; 36= 1933 ; 15= 1934?? ; 6= 1934? ; 47= 1934 ; 6= 1935?? ; 3= 1935? ; 23= 1935 ; 10= 1936?? ; 18= 1936? ; 19= 1936 ; 7= 1937?? ; 13= 1937? ; 7= 1937 ; 5= 1938? ; 7= 1938 ; 4= 1939?? ; 3= 1939 ; 1= 1940?? ; 1= 1940 ; 2= 1941? ; 1= 1942?? ; 1= 1946
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):419

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