Antique radios, Old Time Radios

A441

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

Tube ID = 2455


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Identical to	A441 = B11 = B1_SIF
Similar Tubes	Normally replaceable-slightly different: B9_Kremenezky; D410; T_Adzam; VO Other characteristic (electr. data): A441N; DG407; DM300(alt); KL70410; RE074d; U409D Other base: Bigrille-Ampli; DG; MX40_Fotos; Micro-Bigril
First Series	Mar.1925 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)	1924 : Saga of the Vacuumtube, Tyne p.421

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	Heizung 3,4 - 4V/0,06A; Sättigungsstr. 10mA; Ruhestrom 6mA; Anodenspannung 20 - 100V; Verstärkungsfaktor 6; Durchgriff 17%; Steilheit 0,45mA/V; Innerer Widerstand 13000Ω; Anwendung: A.N.L.; Preis 1927: 15ATS. Daten aus dem WEKA-Katalog 1927, Seite 163. Text in other languages (may differ)
Literature	Radios von gestern Seite 227 Taschenbuch zum Röhren-Codex 1948/49

Röhrensammlung
Wolfgang Bauer

Telefunken Werkstattbuch
Wolfgang Bauer

Usage in Models (calculation each 25th of the month)	1= 1926 ; 2= 1927?? ; 1= 1927? ; 2= 1927 ; 2= 1928 ; 1= 1929? ; 2= 1929 ; 3= 1930 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 14

No further Information for

A441

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