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ID = 2560
Brand: Tungsram; Budapest (see also British T.)
Tube type:  Vacuum Pentode   Power/Output 
Identical to PP430 = M43 = C443 = RES364 = L425D
Similar Tubes
Normally replaceable-slightly different:
  D100N ; DP3 ; DW3 ; M604 ; M704 ; P425_Triotron ; TW425 ; UP4C ; W506
Multiple differences or of other kind:
First year 1929 -- Collector info (Sammler) Jacob Roschy
Predecessor Tubes B443   PP415  
Successor Tubes 1930   C443N   RES374   L427D   PP431  

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 0.25 Ampere / Direct / Specified voltage AC/DC

The C443 was designed for AC mains operation only, it is capable of about twice the output power of the former B443. The equivalent types RES364, L425D and PP430 appeared considerably later.Jacob Roschÿ, 2003-01-17]

Text in other languages (may differ)
Information source Taschenbuch zum Röhren-Codex 1948/49   

4_37.png PP430: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad
PP430: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

More ...
Usage in Models 1= 1929 ; 2= 1930 ; 1= 1932 ; 1= 1933? ; 1= 1933 ; 5= 1934 ; 1= 1935?? ; 1= 1935? ; 1= 1936

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):14

Collection of



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