1S5T, Tube 1S5T; Röhre 1S5T (1S5T)

Antique radios, Old Time Radios

1S5T

Country:	Hungary		Brand:	Tungsram; Budapest (see also British T.)
			Tube type:	Diode-Pentode Audio Frequency

Tube ID = 2814


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Identical to	1S5T
Similar Tubes	1S5 (Heater different) 1U5 (other base)
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	-: Direct / -: Battery = / If: 0.025 Ampere / Vf 1.4 Volts /
Description	Miniature type used in light-weight, compact, portable, battery-operated receivers as combined detector and voltage amplifier. Filament 1.4 volts, 0.05 amperes. Same tube as 1S5 but built by Tungsram (T). The 1U5 has the same electrical characteristics but it uses an improved structure which greatly reduces any tendency toward microphonic effects. In addition, the diode unit is effectively shielded from the pentode unit to prevent "play-through".
Tube prices	0 Tube prices (visible for members only)

M.M.
Michael Mischke

Telefunken Röhrenhandbuch
Wolfgang Bauer

Usage in Models	2= 1948 ; 1= 1950?? ; 2= 1950? ; 6= 1950 ; 1= 1951?? ; 1= 1951? ; 1= 1951 ; 1= 1952? ; 7= 1952 ; 1= 1953? ; 5= 1953 ; 2= 1954? ; 1= 1954 ; 2= 1955?? ; 1= 1955? ; 1= 1955 ; 2= 1956? ; 8= 1956 ; 6= 1957 ; 3= 1958? ; 4= 1958 ; 1= 1959?? ; 2= 1959 ; 1= 1961 ;
Number of Models with this tube 62

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1S5T

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