Antique radios, Old Time Radios

1T4T

Country:	Hungary		Brand:	Tungsram; Budapest (see also British T.)
			Tube type:	Vacuum Pentode RF/IF-Stage Controlling (mu)

Tube ID = 2815


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Identical to	1T4T
Similar Tubes	Heater different: 1T4
First Source (s)	Apr.1949 : Funkschau (FS) 1949, Heft 9 Sep.1948 : Funk-Technik (FT) 1948 #18

Base	Miniatur-7-Pin-Base B7G, USA 1940
Was used by	Radio/TV-reception etc.
Filament	Vf 1.4 Volts / If: 0.025 Ampere / -: Direct / -: Battery = /

RGO
René Goebel

Telefunken Röhrenhandbuch
Wolfgang Bauer

Usage in Models (calculation each 25th of the month)	2= 1948 ; 1= 1949 ; 1= 1950?? ; 2= 1950? ; 8= 1950 ; 1= 1951?? ; 2= 1951 ; 1= 1952? ; 7= 1952 ; 1= 1953? ; 5= 1953 ; 2= 1954? ; 1= 1954 ; 2= 1955?? ; 1= 1955? ; 4= 1955 ; 2= 1956? ; 19= 1956 ; 6= 1957 ; 3= 1958? ; 4= 1958 ; 1= 1959?? ; 3= 1959 ; 1= 1960 ; 1= 1961 ; 1= 1962?? ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 82

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1T4T

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