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ECH2 Info
Country:  Netherlands      Brand:  Philips; - Eindhoven; Netherlands 
  Developer:  Philips; - Eindhoven; Netherlands 
  Tube type:  Triode-Heptode   Frequency converter   Controlling (mu) 
Tube ID = 2490
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Identical to ECH2
Similar Tubes CCH2 (Heater different)  
First Series   1938 -- Collector info (Sammler) HBV
First Source (s) Jun.1938 : Philips Bulletin
1938 : History of the British Radio Valve to 1940
Predecessor Tubes EK2  
Successor Tubes 1939 ECH3  

Base Europe side contact base P (P8A) (Codex=Sao) Top contact with a cap
Was used by Radio/TV-reception etc.
Filament -: Indirect / -: Parallel, (AC/DC) / If: 0.95 Ampere / Vf 6.3 Volts /
Literature Taschenbuch zum Röhren-Codex 1948/49   

ech2.jpg
RFJ
Roy Johnson

 
ech2_sock.png
RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

 
ech2_spec_2.png
RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Usage in Models   1= 1938? ; 6= 1938 ; 9= 1939 ; 5= 1940 ;
Number of Models with this tube   21
No further Information for

ECH2    

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