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DD620

Information - Help 
ID = 6626
       
Country:
Great Britain (UK)
Brand: Mazda = Valve (Tube) brand GB (see also France)
Tube type:  Double Diode   Detector 
Identical to DD620
Similar Tubes
Heater different:
  V914

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=F)
Was used by Radio/TV-reception etc.
Filament Vf 6 Volts / If 0.2 Ampere / Indirect / Specified voltage AC/DC
Description

Ia <1mA

 
Dimensions (WHD)
incl. pins / tip
41 x 90 x mm / 1.61 x 3.54 x inch
Information source History of the British Radio Valve to 1940   p. 139 & 177
- - Manufacturers Literature   
Babani, International Radio Tube Encyclopaedia
Taschenbuch zum Röhren-Codex 1948/49

dd620_so.png DD620: rtt
Anonymous 10 Collector

More ...

Just Qvigstad
v914_dd620~~1.png
DD620: own collection
Peter den Boer

Usage in Models 1= 1934? ; 1= 1934 ; 6= 1935

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):8
 

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