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R220

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ID = 486
       
Country:
Germany
Brand: Rectron GmbH; Berlin S59
Tube type:  Full-Wave Rectifier gas filled   Power-supply 
Identical to R220 = 1702
Similar Tubes
Normally replaceable-slightly different:
  G2200
First year 1927 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Feb.1929 : Funk Bastler 1929, Heft 8

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 1.8 Volts / If 2.8 Ampere / Direct
Tube prices 1 Tube prices (visible for members only)
Information source Taschenbuch zum Röhren-Codex 1948/49   

d_rectron_1928_schgaltung_r220.png
R220: Sammlung GJ
Anonymous 544 Collector
    More ...
g2340_so~~7.png R220: rtt
Anonymous 10 Collector

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Just Qvigstad
r220_spec.png
R220: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

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Usage in Models 4= 1928 ; 3= 1929? ; 4= 1929 ; 2= 1930 ; 1= 1931 ; 1= 1933

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):15


Collection of

 
r220_053r.jpg

R220
 

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