radiomuseum.org

 
Please click your language flag. Bitte Sprachflagge klicken.

S440N

Information - Help 
ID = 14795
       
Country:
France
Brand: Grammont (Radiofotos, Fotos); Paris, Malakoff
Tube type:  Triode, vacuum   RF/IF-Stage 
  Ca. 1925 up to 1945 rare.
Identical to S440N
Similar Tubes
Normally replaceable-slightly different:
  AR4100 ; DW3559 ; DW4023 ; E438 ; E438 ; I4078 ; REN1004 ; RS4230 ; TE38
First Source (s)
1929 : Saga of the Vacuumtube, Tyne p.406

Base Europe 5-Pin (O5A, B5) (Codex=F)
Filament Vf 4 Volts / If 1 Ampere / Indirect / Parallel, (AC/DC)
Literature Taschenbuch zum Röhren-Codex 1948/49   Bulletin CHCR no.26, April 2000, p.17
- - Manufacturers Literature   2-9-1933
 
grammontfotos_s440n_bild1.jpg
S440N
Rudolf Osterkamp

 
s440n_so.png
S440N: rtt
Michael Schlör

 
actubessmall_11.png
S440N: own collection
Peter den Boer


Usage in Models 1= 1930?? ; 1= 1931? ; 1= 1931 ; 1= 1932

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):4


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