radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

4F7

Information - Help 
ID = 9431
       
Country:
Germany
Brand: TeKaDe (TKD), Süddeutsche Telefon-Apparate- Kabel- und Drahtwerke; Nürnberg
Tube type:  Vacuum Pentode   RF/IF-Stage 
Identical to 4F7
Similar Tubes
Normally replaceable-slightly different:
  AF7
Heater different:
  13F7

Base Europe side contact P8A (Au P, 8SC) (Codex=Sf)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.7 Ampere / Indirect / Parallel, (AC/DC)
Information source Taschenbuch zum Röhren-Codex 1948/49   
 
4f7_tkd_45.jpg
4F7: Collection JR
Jacob Roschy

 
28~~2.png
4F7: 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