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44

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ID = 2675
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 44 = 144
Similar Tubes
Normally replaceable-slightly different:
  39 ; 39/44
First Source (s)
Apr.1932 : 70 Years of Radiotubes and V.
Successor Tubes 39/44  

Base UY-Base, 5 Pins (USA, April 1927) (Codex=Hfo)
Filament Vf 6.3 Volts / If 0.3 Ampere / Indirect / Parallel / series AC/DC
Tube prices 1 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
44_cornell_rmf.jpg
44: My Collection
Bruce Morgenstern

 
44_so.png
44: ARRL Handbook 1972
Michael Schlör

 

Usage in Models 2= 1932? ; 62= 1932 ; 1= 1933?? ; 9= 1933? ; 45= 1933 ; 4= 1934?? ; 1= 1934? ; 21= 1934 ; 10= 1935?? ; 9= 1935? ; 12= 1935 ; 2= 1936?? ; 4= 1936? ; 1= 1936 ; 1= 1937??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):184


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