radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

DDT

Information - Help 
ID = 14072
       
Country:
Great Britain (UK)
Brand: Cossor, A.C.; London
Tube type:  Double Diode-Triode   Audio Frequency 
Identical to DDT
Similar Tubes
Normally replaceable-slightly different:
  DDT4160 ; DDT4_Clarion
Heater different:
  DDT16

Base British-7-Pin, old (M7A) (Codex=Nb) Top contact with a cap
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Description

Triode Typ gm of 2.4mA/V at Va=200V.

 
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
ddt~~1.jpg
DDT: R.O.
Rudolf Osterkamp

 
523.png
DDT: Telefunken Werkstattbuch
Wolfgang Bauer

 
ddt_data.png
DDT: COSSOR VALVE MANUAL 1935-6
Jose Casas-Avalos


Usage in Models 1= 1933 ; 1= 1934 ; 6= 1935? ; 2= 1935 ; 1= 1936? ; 2= 1936 ; 9= 1937 ; 1= 1938? ; 5= 1938 ; 1= 1939? ; 1= 1939 ; 1= 1940? ; 9= 1940 ; 1= 1942 ; 1= 1945 ; 2= 1946

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):44


You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
rmXorg