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GR720/A

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ID = 85100
       
Country:
Germany
Brand: Deutsche Glimmlampen GmbH, (DGL), Otto Pressler; Leipzig
Tube type:  Voltage Regulator, single 
Identical to GR720/A
Similar Tubes
Other base:
  GR720
Multiple differences or of other kind:
  GR720/DA ; GR720/DR

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 Top contact screw type.
Filament
Information source -- Collector info (Sammler)   group 494

grxxxa_sockel~~4.png GR720/A: Röhren-Codex 1948, angepaßt von S. Müller
Stefan Müller


Just Qvigstad

Collection of

 
dsc_1250.jpg

 

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