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1T4 Info
Country:  United States of America (USA)      Brand:  Common type USA 
  Tube type:  Vacuum Pentode   RF/IF-Stage   Controlling (mu) 
Tube ID = 429
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Identical to 1T4 = DF91 = VT-173 = W17 = 1K2
Similar Tubes Heater different:
 1T4T; 399A; 399B
First Series   1940 Tube leaflet collection E.Erb Analysis by original leaflets

Base Miniatur-7-Pin-Base B7G, USA 1940 (Codex=Zoo)
Was used by Radio/TV-reception etc.
Filament Vf 1.4 Volts / If: 0.05 Ampere / -: Direct / -: Battery = /
Tube prices 3 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

  1t4.gif
  Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus
1t4.jpg
MS
Martin Steyer

 
594_1.png
Telefunken Werkstattbuch
Wolfgang Bauer

 
1t4datenblatt.png
Röhrensammlung W.Raacke
Werner Raacke

Usage in Models (calculation each 25th of the month)   1= 1937? ; 1= 1940?? ; 1= 1940? ; 6= 1940 ; 10= 1941?? ; 4= 1941? ; 26= 1941 ; 3= 1942?? ; 6= 1942? ; 17= 1942 ; 1= 1943?? ; 2= 1943? ; 2= 1945?? ; 1= 1945? ; 1= 1945 ; 1= 1946?? ; 2= 1946? ; 41= 1946 ; 5= 1947? ; 52= 1947 ; 3= 1948?? ; 5= 1948? ; 52= 1948 ; 7= 1949?? ; 6= 1949? ; 35= 1949 ; 26= 1950?? ; 6= 1950? ; 33= 1950 ; 9= 1951?? ; 2= 1951? ; 53= 1951 ; 18= 1952?? ; 6= 1952? ; 30= 1952 ; 4= 1953?? ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):   650
No further Information for

1T4    

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