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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
Similar Tubes
Normally replaceable-slightly different:
  1701 ; R250_Rectron
First year 1928 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 1.8 Volts / If 2.8 Ampere / Direct / Specified voltage AC/DC
Description

Codex falsch erfasst! Möglicherweise gab es die R250 nie von Radio-Record sondern nur von Rectron. Es ist uns bisher kein Expemplar von Radio-Record bekannt.

 
Information source Taschenbuch zum Röhren-Codex 1948/49   

g2340_so~~4.png R250: rtt
Anonymous 10 Collector

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Just Qvigstad
Usage in Models 1= 1928 ; 1= 1929?? ; 15= 1929 ; 4= 1930 ; 1= 1931 ; 2= 1932?

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):24
 

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