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1T4T

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ID = 2815
       
Country:
Hungary
Brand: Tungsram; Budapest (see also British T.)
Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 1T4T
Similar Tubes
Heater different:
  1T4
First Source (s)
Apr.1949 : Funkschau 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 =
Tube prices 13 Tube prices (visible for members only)
594_2.png 1T4T: Telefunken Röhrenhandbuch
Wolfgang Bauer

Just Qvigstad
Usage in Models 4= 1948 ; 2= 1949 ; 3= 1950?? ; 2= 1950? ; 9= 1950 ; 1= 1951?? ; 4= 1951 ; 3= 1952?? ; 1= 1952? ; 9= 1952 ; 1= 1953? ; 7= 1953 ; 2= 1954? ; 3= 1954 ; 1= 1955?? ; 3= 1955? ; 6= 1955 ; 2= 1956? ; 21= 1956 ; 2= 1957? ; 6= 1957 ; 3= 1958? ; 12= 1958 ; 8= 1959 ; 1= 1960? ; 1= 1960 ; 2= 1961 ; 1= 1962
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):120

Collection of

René Goebel † 21.12.23 (D)
Bruno Candreia (CH)
Michael Mischke (D)
Danko Tkalec (HR)
Egon Penker (A)
Tomasz Szczesniak (PL)
Karl - Heinz Bossan (D)
Vicente Moncholi-Cebrian (E)
 
1t4t_1.jpg

1T4T
 
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