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ID = 14492
Brand: Radio-Record - Röhrenmarke; Holland
Tube type:  Triode, vacuum 
  Ca. 1925 up to 1945 rare.
Identical to M350
Similar Tubes
Normally replaceable-slightly different:
  A425 ; L307 ; R412 ; RE034
First year 1927 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Sep.1927 : Funk Bastler 1927 Heft 39
17.Feb.1926 : Radio-Expres, Netherlands

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Filament Vf 4 Volts / If 0.1 Ampere / Direct / Battery =
Description HF amplification 
Dimensions (WHD)
incl. pins / tip
40 x 90 x 31 mm / 1.57 x 3.54 x 1.22 inch
Weight 41 g / 1.45 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   
M350: D SCH
Detlef Schäfer

M350: Tabu Röhren-Codex, 1948
Anonymous 15 Collector

M350: own collection
Peter den Boer

from Just Qvigstad

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