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14R7

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ID = 2956
       
Country:
United States of America (USA)
Brand: Common type USA tube/semicond.
Developer:  
Tube type:  Double Diode-Pentode   RF/IF-Stage   Controlling (mu) 
Identical to 14R7 = CV3937
Similar Tubes
Heater different:
  7R7
First Source (s)
07.Mar.1941 : Electron Tube Registration List
Predecessor Tubes 14E7   12C8GT   12C8  

Base Loctal-8, B8G (Sylvania, 1938) (Codex=Wb)
Was used by Radio/TV-reception etc.
Filament Vf 12.6 Volts / If 0.15 Ampere / Indirect / Parallel / series AC/DC
Tube prices 2 Tube prices (visible for members only)
Literature Essential Characteristics, GE 1973   
Taschenbuch zum Röhren-Codex 1948/49   
Electron Tube Registration List
  14r7.png
  14R7: Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus †
 
14r7_01r.jpg
14R7: Collection JR
Jacob Roschy

 
390_3.png
14R7: Telefunken Werkstattbuch
Wolfgang Bauer

 
14r7_techdat01.png
14R7: Sylvania Technical Manual
Peter Hoddow


Usage in Models 2= 1941? ; 3= 1941 ; 1= 1942?? ; 15= 1942 ; 1= 1943 ; 1= 1946? ; 7= 1946 ; 2= 1947 ; 1= 1948? ; 1= 1949?? ; 1= 1949 ; 1= 1952

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):36


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