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1T4 Info
Country:  United States of America (USA)      Brand:  Common type USA 
  Tube type:  PENTODE   RF/IF-Stage   Controlling (mu) 
Tube ID = 429
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Identical to 1T4 = DF91 = VT-173 = W17 = 1K2
Similar Tubes 1T4T (Heater different)   399A (Heater different)   399B (Heater different)  
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 -: Direct / -: Battery = / If: 0.05 Ampere / Vf 1.4 Volts /
Tube prices 2 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   1= 1937? ; 1= 1940?? ; 1= 1940? ; 5= 1940 ; 9= 1941?? ; 3= 1941? ; 20= 1941 ; 2= 1942?? ; 2= 1942? ; 17= 1942 ; 1= 1943?? ; 3= 1945?? ; 1= 1945? ; 1= 1945 ; 4= 1946?? ; 2= 1946? ; 33= 1946 ; 1= 1947?? ; 3= 1947? ; 53= 1947 ; 3= 1948?? ; 5= 1948? ; 45= 1948 ; 6= 1949?? ; 5= 1949? ; 34= 1949 ; 21= 1950?? ; 5= 1950? ; 29= 1950 ; 8= 1951?? ; 3= 1951? ; 33= 1951 ; 16= 1952?? ; 5= 1952? ; 23= 1952 ; 4= 1953?? ;
Number of Models with this tube   532
No further Information for

1T4    

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