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R250

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ID = 488
       
Country:
Netherlands
Brand: Radio-Record - Röhrenmarke; Holland
Tube type:  Full-Wave Rectifier inert gas filled   Power-supply 
Identical to R250 = 1701
Similar Tubes
Normally replaceable-slightly different:
  R250_Rectron
First year 1928 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
Filament Vf 1.8 Volts / If 2.8 Ampere / Direct / Parallel, (AC/DC)
Description Codex falsch erfasst! 
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
rectron_r250_1.jpg
R250: W.E.
Wolfgang Eckardt

 
g2340_so~~4.png
R250: rtt
Michael Schlör

 

Usage in Models 1= 1928 ; 13= 1929 ; 3= 1930 ; 1= 1931 ; 2= 1932?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):20

Collection of a member from FIN

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