Antique radios, Old Time Radios

55

Country:	United States of America (USA)		Brand:	Common type USA
			Tube type:	Double Diode-Triode Audio Frequency

Tube ID = 2972


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Identical to	55 = UZ-55 = A255
Similar Tubes	Heater different: 85 Other base and other base diagram: 6C7; 6V7G
First Series	1931 Radios von gestern
First Source (s)	Sep.1932 : -- Collector info (Sammler)
Successor Tubes	85 6C7

Base	6-Pin-Base U6A, old, USA (Codex=Ka)
Was used by	Radio/TV-reception etc.
Filament	Vf 2.5 Volts / If: 1 Ampere / -: Indirect / -: Parallel, (AC/DC) /
Tube prices	0 Tube prices (visible for members only)
Literature	Essential Characteristics, GE 1973 Taschenbuch zum Röhren-Codex 1948/49


	Internet Miguel Angel Trujillo-Rodriguez

TreLe
Trev Levick

Variants

Telefunken Werkstattbuch
Wolfgang Bauer

Sylvania Technical Manual
Peter Hoddow

Usage in Models (calculation each 25th of the month)	13= 1931? ; 3= 1931 ; 8= 1932?? ; 37= 1932? ; 146= 1932 ; 18= 1933?? ; 13= 1933? ; 112= 1933 ; 7= 1934?? ; 15= 1934? ; 46= 1934 ; 6= 1935?? ; 2= 1935? ; 14= 1935 ; 1= 1936?? ; 5= 1936 ; 2= 1937 ; 1= 1938?? ; 1= 1942 ; 2= 1945? ; 1= 1947?? ; 1= 1948?? ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 454

Variants
P.ST Peter Steffen	55*Blaues Glas Röhre von Arcturus mit blauem Glas. 08.Aug.2009 Peter Steffen

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55

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55

Variants

55*Blaues Glas

55