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41

Information - Help 
ID = 2968
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Tube type:  Vacuum Pentode   Power/Output 
Identical to 41 = PH41 = ER41 = VT-48
Similar Tubes
Other shape (e.g. bulb type):
  41S
Normally replaceable-slightly different:
  38041 ; 41E
Other class quality (otherwise equal):
  CV608
Other base:
  6AR5 ; 6K6G ; 6K6GT ; 7B5 ; EL1
Other base and other heater:
  EL2
First Source (s)
1933 : The AWA Journal, Quarterly Bulletin of the Antique Wireless Association, Inc. (AWAJ) Vol. #7
Sep.1932 : -- Collector info (Sammler)
Predecessor Tubes 38   89  
Successor Tubes 6K6G   6AR5   6K6GT   EL2   EL1   7B5  

Base 6-Pin-Base U6A, old, USA (Codex=Kdo)
Was used by Radio/TV-reception etc.
Filament Vf 6.3 Volts / If 0.4 Ampere / Indirect / Parallel, (AC/DC) /
Description

* RMA/JEDEC register record available by courtesy of TCA* - This tube was already listed by several manufacturers when RMA started its standardization in 1934. In order to characterize popular receiving types, manufacturers were asked to supply average characteristics as measured on production lots. Here are the filled answer forms supplied by Radio Valve Co., Raytheon, Sparton, Triad, Tung Sol, Ken Rad, Hytron and Arcturus. Full record is downloadable here.

 
Tube prices 0 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

  41.png
  41: Courtesy Bureau Belper (De Muiderkring, Bussum)
Michael Schlör
 
41.jpg
41: collection JR
Jacob Roschy

 
Variants
 
470_2.png
41: Telefunken Werkstattbuch
Wolfgang Bauer

 
41_techdat01.png
41: Sylvania Technical Manual
Peter Hoddow


Usage in Models 1= 1932?? ; 9= 1932? ; 28= 1932 ; 18= 1933?? ; 53= 1933? ; 87= 1933 ; 30= 1934?? ; 38= 1934? ; 163= 1934 ; 31= 1935?? ; 42= 1935? ; 153= 1935 ; 28= 1936?? ; 42= 1936? ; 148= 1936 ; 39= 1937?? ; 30= 1937? ; 267= 1937 ; 46= 1938?? ; 38= 1938? ; 185= 1938 ; 55= 1939?? ; 37= 1939? ; 76= 1939 ; 42= 1940?? ; 19= 1940? ; 48= 1940 ; 28= 1941?? ; 7= 1941? ; 13= 1941 ; 25= 1942?? ; 9= 1942? ; 2= 1942 ; 1= 1946?? ; 10= 1947?? ; 2= 1948?? ; 1= 1949?? ; 1= 1951 ; 1= 1954 ; 1= 9999
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1854

Documents about this component
  RMA qualification record for tube types 76, 77, 78, 6C6, 6D6, 75, 41, 42, 2A5, 85, 6F7, 80, 84 and 6A7. 1569 KB

41*Box

By Courtesy Of EBAY User: orhpkristen
Franz Scharner
   

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