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ID = 12677
Brand: Radio-Record - Röhrenmarke; Holland
Developer: Radio-Record - Röhrenmarke; Holland 
Tube type:  Screen-grid Tetrode   RF/IF-Stage 
  Ca. 1925 up to 1945 rare.
Identical to Dn2004
Similar Tubes
Normally replaceable-slightly different:
  AS4100 ; E442 ; RENS1204
First Source (s)
1930 : Radio-Expres, Netherlands

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fc) Top contact screw type.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Specified voltage AC/DC
Description Gm=1.2 at Va=200. Amplification factor 200 Rinternal=167k. (Radio-Expres 1930) 
Dimensions (WHD)
incl. pins / tip
44 x 123 x 32 mm / 1.73 x 4.84 x 1.26 inch
Weight 35 g / 1.23 oz
Information source Taschenbuch zum Röhren-Codex 1948/49   
Radio-Expres, Netherlands   
- - Manufacturers Literature

dn24_so.png Dn2004: rtt
Anonymous 10 Collector

More ...

Just Qvigstad
Dn2004: own collection
Peter den Boer

Collection of



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