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A442R

Information - Help 
ID = 12504
       
Country:
Netherlands
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Screen-grid Tetrode 
Identical to A442R

Base Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Er)
Filament Vf 4 Volts / If 0.06 Ampere
Literature Taschenbuch zum Röhren-Codex 1948/49   
 
3_2.png
A442R: Telefunken Werkstattbuch
Wolfgang Bauer

 
a442r_spec.png
A442R: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector


Usage in Models 1= 1928?? ; 1= 1928

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):2

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