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Dn44_Spezialsockel

Information - Help 
ID = 74305
       
Country:
Netherlands
Brand: Radio-Record - Röhrenmarke; Holland
Tube type:  Dual-Grid Tetrode   Frequency converter 
Identical to Dn44_Spezialsockel
Similar Tubes
Other base:
  Dn44

Base SPECIAL TUBEBASE in general
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Description

Va=70-100 Gm=1.5 amp factor=4.5 and Rint=3000 ohms. (Radio-Expres 1930)

 
Information source -- Original-techn. papers.   
 
20200728_193224.jpg
Dn44_Spezialsockel: RMG
Robert Gillespie

 
dn44_spezialsockel.png
Dn44_Spezialsockel: Manufacturer's Literature
Anonymous 15 Collector

 
f_record_dn44.png
Dn44_Spezialsockel: Fiche technique
Mark Hippenstiel



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