Antique radios, Old Time Radios

A441N

Country:	Netherlands		Brand:	Philips; - Eindhoven; Netherlands
			Tube type:	Space Charge Tetrode

Tube ID = 2456


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Identical to	A441N = AB4
Similar Tubes	Other characteristic (electr. data): 4DR; A441; DG407; DM300(alt); KL70410; RE074d; U409D Other base: A441N_5pin Other base and data slightly different: R43M Multiple differences or of other kind: CI

Base	Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eu) Sidecontact
Was used by	Radio/TV-reception etc.
Filament	Vf 4 Volts / If: 0.08 Ampere / -: Direct / -: Battery = /
Description	Vom Hersteller als "Doppelgitterröhre" bezeichnet. Bekannt ist sie in der Raumladegitterschaltung in vielen Bastelanleitungen geworden. -- Wurde in den 20ern auch für selbstschwingende Mischschaltungen (Modulateur Bigrille) verwendet. Text in other languages (may differ)
Literature	Taschenbuch zum Röhren-Codex 1948/49

Röhrensammlung
Wolfgang Bauer

Telefunken Werkstattbuch
Wolfgang Bauer

RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Usage in Models (calculation each 25th of the month)	1= 1927?? ; 1= 1927 ; 1= 1928?? ; 4= 1929 ; 2= 1930 ; 2= 1931 ; 1= 1935 ; 2= 1948 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 14

No further Information for

A441N

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