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KDD1

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ID = 566
       
Country:
Europe
Brand: Common type Europe tube/semicond.
Tube type:  Double Triode   Power/Output 
Identical to KDD1 = TKDD1
Similar Tubes
Other base:
  L220B ; RE402B
Other base and data slightly different:
  1J6G ; CB215 ; CB220 ; СО-243
First year Feb.1936 Tube leaflet collection E.Erb Analysis by original leaflets (T7, V8)
First Source (s)
Jan.1936 : Funk # 1
Sep.1935 : Philips Bulletin #29
Predecessor Tubes B240  
Successor Tubes 1940   DDD11   DLL21  

Base Europe side contact base P (P8A) (Codex=So)
Filament Vf 2 Volts / If 0.22 Ampere / Direct / Battery =
Description Siehe auch: Zero-Bias- und Triple-Twin- Röhren 
Tube prices 6 Tube prices (visible for members only)
Literature Taschenbuch zum Röhren-Codex 1948/49   
  kdd1.gif
  KDD1: K.H.Fischer
Karlheinz Fischer
 
kdd1_678.jpg
KDD1: Collection JR
Jacob Roschy

 
kdd1.png
KDD1: Prüfkarte Röhrenprüfgerät W 18N
Jörg Kulbe

 
kdd1_spec.png
KDD1: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector


Usage in Models 1= 1935? ; 2= 1936?? ; 5= 1936? ; 21= 1936 ; 4= 1937? ; 22= 1937 ; 4= 1938? ; 25= 1938 ; 1= 1939?? ; 2= 1939? ; 18= 1939 ; 2= 1940? ; 2= 1940 ; 1= 1941 ; 2= 1944?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):112


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