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UCH4 Info
Country:  Europe      Brand:  Common type Europe 
  Developer:  Philips; - Eindhoven; Netherlands 
  Tube type:  Triode-Heptode   Frequency converter   Controlling (mu) 
Tube ID = 966
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Identical to UCH4 = 20CH4U
Similar Tubes UCH21 (other base)   UCH5 (other base)   OCH4 (Heater different)  
First Series   1940 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s) Apr.1940 : Daten und Schaltungen moderner ... Röhren; Philips # 3
Predecessor Tubes CK1   CCH2   CK3  
Successor Tubes UCH21   UCH5   UCH41  

Base Octal (Int.Octal, IO) K8A, USA 1935 (Codex=Vao)
Was used by Radio/TV-reception etc.
Filament -: Indirect / -: Series, AC/DC / If: 0.1 Ampere / Vf 20 Volts /
Tube prices 0 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   

  uch4.gif
  Courtesy Bureau Belper (De Muiderkring, Bussum), Scan Frank Philipse
Karel De Reus
uch4.jpg
JR
Jacob Roschy

 
sockel_uch4.png
g.h.
Gerhard Heigl

 
uch4_spec.png
RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Usage in Models   1= 1939? ; 1= 1939 ; 1= 1940?? ; 1= 1940? ; 18= 1940 ; 12= 1941 ; 7= 1942 ; 4= 1943 ; 1= 1945?? ; 4= 1945 ; 1= 1946?? ; 1= 1946? ; 6= 1946 ; 2= 1947? ; 20= 1947 ; 1= 1948?? ; 1= 1948? ; 45= 1948 ; 12= 1949 ; 1= 1950?? ; 1= 1950 ; 1= 1955?? ;
Number of Models with this tube   142
No further Information for

UCH4    

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