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T4700

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ID = 10300
       
Country:
France
Brand: Grammont (Radiofotos, Fotos); Paris, Malakoff
Tube type:  Vacuum Pentode   Controlling (mu) 
Identical to T4700
Similar Tubes
Normally replaceable-slightly different:
  E447 ; RENS1294 ; VP4
Other base and data slightly different:
  HP4105

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Fco) Top contact screw type.
Filament Vf 4 Volts / If 1.2 Ampere / Indirect / Specified voltage AC/DC
Information source Taschenbuch zum Röhren-Codex 1948/49   
- - Manufacturers Literature   2-9-1933

t4600t4700small_1.png T4700: own collection
Peter den Boer


Just Qvigstad
actubessmall_8.png
T4700: own collection
Peter den Boer

Usage in Models 1= 9999

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):1
 

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