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ID = 7107
Brand: Rectron GmbH; Berlin
Tube type:  Full-Wave Rectifier gas filled 
Identical to R200/1,3/II
Similar Tubes
Normally replaceable-slightly different:
First Source (s)
Mar.1929 : Funk Bastler 1929, Heft 9

Filament Vf 2.1 Volts / If 4.5 Ampere
Description 2 x 220V input, 1.3A average rectified current. 
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   

R200/1,3/II: own collection
Peter den Boer


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