Antique radios, Old Time Radios

41

ID = 2968

Country:

United States of America (USA)

Brand:	Common type USA tube/semicond. Common type USA tube/semicond. Genalex, BGE (brand), British General Electric Co. Pty Ltd.; Sydney, NSW. Osram (tubes/valves) - see British General Electrics; Sydney Canadian Marconi Co. Ltd. (CMC, Esterline), Marconi's Wireless; Montreal, QC Arcturus Radio Tube Co.; Newark, NJ Kadette (tube brand) - see also International Radio Corp.; Ann Arbor, MI Ken-Rad, The Kentucky Radio Corporation; Owensboro, KY Sylvania (Hygrade, GTE, Nilco); Emporium (PA) Triad Television & Mfg. Co.; Pawtucket, RI
Developer:	RCA (RCA Victor Co. Inc.); New York (NY)
Tube type:	Vacuum Pentode Power/Output

Identical to

41 = ER41 = VT-48 = PH41 = PA = NU-41

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

Multiple differences or of other kind:

293A_WE

First year

Sep.1932 -- Collector info (Sammler) Backed up by >20 models.

First Source (s)

1933 : The AWA Journal Vol. #7

Predecessor Tubes

38 89 PA

Successor Tubes

6K6G 6AR5 6K6GT EL2 7B5 EL1

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 / Specified voltage 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.

Dimensions (WHD)
incl. pins / tip

x 106 x 39 mm / x 4.17 x 1.54 inch

Weight

42 g / 1.48 oz

Tube prices

2 Tube prices (visible for members only)

Information source

Essential Characteristics, GE 1973
Tube Lore (II) p. 27
Taschenbuch zum Röhren-Codex 1948/49
Röhrencodex , Röhren-Taschenbuch 1950 23000 Röhren

41: Courtesy Bureau Belper (De Muiderkring, Bussum) Anonymous 10 Collector
41: Telefunken Werkstattbuch Wolfgang Bauer More ...	Just Qvigstad	41: Sylvania Technical Manual Peter Hoddow More ...

Usage in Models

1= 1932?? ; 5= 1932? ; 27= 1932 ; 20= 1933?? ; 55= 1933? ; 91= 1933 ; 28= 1934?? ; 45= 1934? ; 176= 1934 ; 33= 1935?? ; 53= 1935? ; 172= 1935 ; 32= 1936?? ; 60= 1936? ; 155= 1936 ; 41= 1937?? ; 45= 1937? ; 267= 1937 ; 49= 1938?? ; 42= 1938? ; 202= 1938 ; 55= 1939?? ; 43= 1939? ; 87= 1939 ; 43= 1940?? ; 22= 1940? ; 52= 1940 ; 28= 1941?? ; 8= 1941? ; 13= 1941 ; 20= 1942?? ; 9= 1942? ; 2= 1942 ; 1= 1944? ; 1= 1945 ; 1= 1946?? ; 8= 1947?? ; 2= 1948?? ; 1= 1949?? ; 1= 1950?? ; 1= 1951 ; 1= 1954 ; 5= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2003

Collection of

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.

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41

Common type USA tube/semicond.

Collection of