Antique radios, Old Time Radios

EFM11

Country:	Germany	Brand:	Telefunken Deutschland (TFK)
		Developer:	Telefunken Deutschland (TFK)
		Tube type:	Mag.Eye-Pentode Controlling (mu)

Tube ID = 245


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Identical to	EFM11
Similar Tubes	Heater different: UFM11 Other base: EFM1; WE18
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	AM2 C/EM2
Successor Tubes	1939 EM11

Base	German Steel Y8A, 1938 (Codex=R)
Was used by	Radio/TV-reception etc.
Filament	Vf 6.3 Volts / If: 0.2 Ampere / -: Indirect / -: Parallel / series AC/DC /
Tube prices	9 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

Röhrensammlung
Wolfgang Bauer

Telefunken Werkstattbuch
Wolfgang Bauer

Rundfunkröhren Ratheiser 1949
Gerhard Heigl

Usage in Models (calculation each 25th of the month)	2= 1938? ; 52= 1938 ; 1= 1939? ; 54= 1939 ; 1= 1940?? ; 15= 1940 ; 1= 1941? ; 6= 1941 ; 1= 1942?? ; 1= 1942 ; 1= 1943? ; 5= 1943 ; 1= 1944?? ; 6= 1944 ; 1= 1945 ; 1= 1946?? ; 1= 1946? ; 5= 1946 ; 1= 1947? ; 7= 1947 ; 1= 1948? ; 13= 1948 ; 1= 1949? ; 5= 1949 ; 4= 1950?? ; 27= 1950 ; 1= 1951?? ; 1= 1951? ; 11= 1951 ; 2= 1952? ; 1= 1953 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 230

Further Information for

EFM11

EFM11 (EFM11) alte / neue Ausführung (26.08.2009) Detlef Kraus	Clicks: 368 Replies: 0
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Anzeigeempfindlichkeit der EFM 11 verbessern (19.03.2006) Rigo Janscheidt	Clicks: 953 Replies: 3
Guten Tag Wer weiß eine Möglichkeit oder gibt es einen Trick um die Anzeigeempfindlichkeit der EFM 11 zu verbessern? ------------ EM: Beitrag aus "Allgemein" zur Röhre verschoben More ...

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