radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

MDM21

Information - Help 
ID = 30399
       
Country:
Great Britain (UK)
Brand: Marconi-Osram - (Valves/Tubes); GB
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Mag. Eye, 2 shadow angles   Indication 
Identical to MDM21 = DM21

Base Octal (Int.Octal, IO) K8A, USA 1935
Filament Vf 1.4 Volts / If 0.025 Ampere / Direct / Battery =
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - -   
- - -
- - -
 
mdm21_r.jpg
MDM21: Collection JR
Jacob Roschy

 
108_1.png
MDM21: Telefunken Werkstattbuch
Wolfgang Bauer

 

from Just Qvigstad


You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]
  
rmXorg