Antique radios, Old Time Radios

1T4

ID = 429

Country:

United States of America (USA)

Brand:	Common type USA tube/semicond.
Tube type:	Vacuum Pentode RF/IF-Stage Controlling (mu)

Identical to

1T4 = DF91 = W17 = 1K2

Similar Tubes

Normally replaceable-slightly different:

CV1971

Other class quality (otherwise equal):

CV785 ; VT-173

Heater different:

1T4T ; 399A ; 399B

First year

1940 Tube leaflet collection E.Erb Analysis by original leaflets

First Source (s)

13.Nov.1939 : Tube Lore (I)

Base

Miniatur-7-Pin-Base B7G, USA 1940 (Codex=Zoo)

Filament

Vf 1.4 Volts / If 0.05 Ampere / Direct / Battery =

Tube prices

13 Tube prices (visible for members only)

Information source

Essential Characteristics, GE 1973
Taschenbuch zum Röhren-Codex 1948/49

1T4: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse Karel De Reus † More ...
1T4: Telefunken Werkstattbuch Wolfgang Bauer More ...	Just Qvigstad	1T4: Manufacturer's Literature Emilio Ciardiello More ...

Usage in Models

1= 1940?? ; 2= 1940? ; 15= 1940 ; 7= 1941?? ; 9= 1941? ; 32= 1941 ; 3= 1942?? ; 10= 1942? ; 17= 1942 ; 2= 1943?? ; 4= 1943? ; 3= 1943 ; 1= 1944? ; 2= 1945?? ; 1= 1945? ; 7= 1945 ; 2= 1946?? ; 8= 1946? ; 60= 1946 ; 2= 1947?? ; 15= 1947? ; 132= 1947 ; 10= 1948?? ; 18= 1948? ; 142= 1948 ; 9= 1949?? ; 11= 1949? ; 118= 1949 ; 47= 1950?? ; 18= 1950? ; 93= 1950 ; 13= 1951?? ; 24= 1951? ; 96= 1951 ; 30= 1952?? ; 31= 1952? ; 61= 1952 ; 12= 1953?? ; 29= 1953? ; 63= 1953 ; 9= 1954?? ; 33= 1954? ; 95= 1954 ; 39= 1955?? ; 29= 1955? ; 53= 1955 ; 9= 1956?? ; 20= 1956? ; 39= 1956 ; 1= 1957?? ; 8= 1957? ; 9= 1957 ; 4= 1958?? ; 2= 1958? ; 10= 1958 ; 3= 1959?? ; 1= 1959? ; 17= 1959 ; 5= 1960?? ; 1= 1960 ; 2= 1961? ; 1= 1961 ; 1= 1963? ; 1= 1965?? ; 1= 1969?? ; 3= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1556

Collection of

1T4

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