Antique radios, Old Time Radios

EF12

Country:	Europe	Brand:	Common type Europe
		Developer:	Telefunken Deutschland (TFK)
		Tube type:	Vacuum Pentode Universal

Tube ID = 587


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Identical to	EF12
Similar Tubes	Other class quality (otherwise equal): EF12K Other base: EF172; WE17 Multiple differences or of other kind: EF12spez.
First Series	Jul.1938 Tube leaflet collection E.Erb Analysis by original leaflets (V7)
First Source (s)	15.Jul.1938 : Funk, Die Zeitschrift des Funkwesens 1938 #14
Predecessor Tubes	EF6 AF7
Successor Tubes	1948 EF40 EF172

Base	German Steel Y8A, 1938 (Codex=Rdo)
Was used by	Radio/TV-reception etc.
Filament	Vf 6.3 Volts / If: 0.2 Ampere / -: Indirect / -: Parallel / series AC/DC /
Tube prices	3 Tube prices (visible for members only)
Literature	Taschenbuch zum Röhren-Codex 1948/49


	Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Karel De Reus

collection JR
Jacob Roschy

Variants

Telefunken Werkstattbuch
Wolfgang Bauer

Lorenz Empfänger-Röhren , 9. Auflage
Michael Sigmund

Usage in Models (calculation each 25th of the month)

2= 1938?? ; 12= 1938 ; 2= 1939?? ; 5= 1939? ; 28= 1939 ; 3= 1940?? ; 4= 1940? ; 7= 1940 ; 1= 1941?? ; 1= 1941? ; 10= 1941 ; 2= 1942? ; 7= 1942 ; 2= 1943?? ; 5= 1943 ; 2= 1944? ; 4= 1944 ; 2= 1945?? ; 1= 1945 ; 5= 1946?? ; 1= 1946? ; 8= 1946 ; 4= 1947?? ; 5= 1947? ; 18= 1947 ; 5= 1948?? ; 6= 1948? ; 12= 1948 ; 2= 1949? ; 22= 1949 ; 11= 1950?? ; 4= 1950? ; 33= 1950 ; 2= 1951?? ; 2= 1951? ; 29= 1951 ;

Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 319

Variants
r.hopfe Reinhard Hopfe	EF12*DDR-glas Glaskolben auf Bakelitsockel 29.Oct.2007 Otto Frosinn
	EF12*Tungsram-MG Tungsram glass version w/ metal hood (MG = metall-glass) 15.Oct.2009 Jacob Roschy	W.E. Wolfgang Eckardt

Further Information for

EF12

EF12 (EF12) : Nicht für's Radio (29.01.2006) Werner Braun	Clicks: 948 Replies: 1
Hallo, TELEFUNKEN war da sehr streng? mfg Werner More ...

EF12 - Tungsram, Bauform? (27.02.2005) Wolfgang Eckardt	Clicks: 1343 Replies: 9
Ich habe eine EF12 von Tungsram gefunden, deren Bauform als Stahlröhre ich mir nicht erklären kann. Wer kann mir etwas dazu und zum Zeitpunkt der Herstellung sagen? Danke sagt Wolfgang Eckardt More ...

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EF12

Variants

EF12*DDR-glas

EF12*Tungsram-MG

EF12