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7Y4

Information - Help 
ID = 3263
       
Country:
United States of America (USA)
Brand:
Tube type:  Full-Wave Vacuum Rectifier 
Identical to 7Y4 = U149 = CV901
Similar Tubes
Other base:
  6Z4 ; 6Z4/84 ; 84 ; 84/6Z4
Other base and data slightly different:
  1274
First Source (s)
09.Dec.1938 : Electron Tube Registration List
Predecessor Tubes 84/6Z4   6ZY5G   6Z4/84   6Z4   84  
Successor Tubes 6X4  
Base Loctal-8, B8G (Sylvania, 1938) (Codex=W)
Filament Vf 6.3 Volts / If 0.5 Ampere / Indirect / Specified voltage AC/DC
Tube prices 3 Tube prices (visible for members only)
Information source Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
Tube Tester Data Avo CT160
7y4.png
7Y4: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Anonymous 10 Collector
310.png 7Y4: Telefunken Werkstattbuch
Wolfgang Bauer
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Just Qvigstad 		7y4_techdat01.png
7Y4: Sylvania Technical Manual
Peter Hoddow
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Usage in Models 1= 1938 ; 2= 1939? ; 21= 1939 ; 5= 1940?? ; 1= 1940? ; 28= 1940 ; 3= 1941? ; 36= 1941 ; 6= 1942 ; 1= 1943 ; 1= 1944? ; 1= 1945? ; 4= 1946?? ; 5= 1946? ; 12= 1946 ; 1= 1947?? ; 5= 1947? ; 8= 1947 ; 12= 1948?? ; 13= 1948? ; 27= 1948 ; 1= 1949?? ; 18= 1949? ; 23= 1949 ; 5= 1950?? ; 13= 1950? ; 24= 1950 ; 3= 1951?? ; 6= 1951? ; 12= 1951 ; 7= 1952? ; 14= 1952 ; 2= 1953?? ; 6= 1953? ; 11= 1953 ; 1= 1954?? ; 2= 1954 ; 4= 1955?? ; 1= 1955? ; 2= 1955 ; 2= 1959? ; 1= 9999
Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):351

Collection of

Hannu Alho (FIN)
Tomasz Szczesniak (PL)
Patrice Zeissloff (F)
Collection of a member from D
Kyle Werner (USA)
Collection of a member from FIN
Christian Schaufelberger (CH)
David Erali (USA)
Rudolf Osterkamp (D)
Günther Stabe † 19.8.20 (D)
Howard Craven (GB)
Bruno Candreia (CH)
Tor Steinnes (N)
Bruce Morgenstern (CDN)
Collection of a member from FIN
George Papaiz (CDN)
Etienne Flemal (B)
Aldo Patriarca (CH)
 
7y4brimarillumineeph1s.jpg

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