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6X4

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ID = 3258
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer: Tung-Sol Electric Inc.; Newark (NJ) 
Tube type:  Full-Wave Vacuum Rectifier   Power-supply 
Identical to 6X4 = 6Z31 = EZ90 = CV493 = U78 = 80BK = KX-80BK = V2M70
Similar Tubes
Other class quality (otherwise equal):
  6063 ; 6X4W ; CV4005
Different maximum ratings:
  6202 ; 6BX4 ; 6X4WA
Heater different:
  12X4
Different connections:
  6Z4_China ; 6Ц4П
Other base:
  6X5 ; 6X5GT ; EZ40A
Other base and data slightly different:
  CV4001
Other base and other heater:
  GZ41
First Source (s)
20.Feb.1946 : Electron Tube Registration List 475
Predecessor Tubes 6X5   6X5GT   6X5G   7Y4  
Successor Tubes 6BX4   EZ90   5993   6203  

Base Miniatur-7-Pin-Base B7G, USA 1940 (Codex=Za)
Filament Vf 6.3 Volts / If 0.6 Ampere / Indirect / Parallel, (AC/DC) /
Description Originally intended for automobile receivers. 
Tube prices 0 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   

  6x4.png
  6X4: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Michael Schlör
 
6x4ez90rcaph1s.jpg
6X4: Patrice ZEISSLOFF
Patrice Zeissloff

 
6x4basediagram.png
6X4: 6X4 GE Data Sheet 5-58
Vitor Oliveira

 
6x4_techdat01.png
6X4: RCA Tube Manual
Peter Hoddow


Usage in Models 1= 1939?? ; 1= 1945?? ; 3= 1946?? ; 4= 1946? ; 1= 1947?? ; 2= 1947? ; 2= 1947 ; 10= 1948?? ; 5= 1948? ; 28= 1948 ; 9= 1949?? ; 18= 1949? ; 62= 1949 ; 63= 1950?? ; 22= 1950? ; 86= 1950 ; 18= 1951?? ; 67= 1951? ; 110= 1951 ; 24= 1952?? ; 35= 1952? ; 105= 1952 ; 32= 1953?? ; 35= 1953? ; 94= 1953 ; 29= 1954?? ; 33= 1954? ; 129= 1954 ; 47= 1955?? ; 28= 1955? ; 103= 1955 ; 18= 1956?? ; 26= 1956? ; 51= 1956 ; 9= 1957?? ; 32= 1957? ; 23= 1957 ; 8= 1958?? ; 26= 1958? ; 94= 1958 ; 4= 1959?? ; 70= 1959? ; 82= 1959 ; 55= 1960?? ; 16= 1960? ; 10= 1960 ; 5= 1961?? ; 17= 1961? ; 9= 1961 ; 3= 1962?? ; 13= 1962? ; 10= 1962 ; 4= 1963?? ; 8= 1963? ; 16= 1963 ; 2= 1964?? ; 2= 1964? ; 11= 1964 ; 20= 1965?? ; 7= 1965? ; 6= 1965 ; 1= 1966?? ; 2= 1966? ; 7= 1966 ; 2= 1967?? ; 1= 1967? ; 1= 1967 ; 2= 1968?? ; 3= 1968? ; 4= 1970?? ; 3= 1971? ; 1= 1973? ; 2= 1975?? ; 1= 1975? ; 7= 9999
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1900

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