radiomuseum.org
Please click your language flag. Bitte Sprachflagge klicken.

4D

Information - Help 
ID = 13260
       
Country:
Spain
Brand: Castilla; Madrid
Tube type:  Triode, vacuum 
Identical to 4D
Similar Tubes
Normally replaceable-slightly different:
  A415 ; B424

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.08 Ampere / Direct
Information source Taschenbuch zum Röhren-Codex 1948/49   
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   1950

4d_so.png 4D: rtt
Anonymous 10 Collector


Just Qvigstad
4d_spec.png
4D: Castilla 1930
Anonymous 15 Collector

 

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