Antique radios, Old Time Radios

A442

Country:	Netherlands		Brand:	Philips; - Eindhoven; Netherlands
			Tube type:	Screen-grid Tetrode

Tube ID = 2457


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Identical to	A442
Similar Tubes	Normally replaceable-slightly different: A442K
First Series	1927 Tube leaflet collection E.Erb Analysis by original leaflets

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

CA
Christian ADAM

Telefunken Werkstattbuch
Wolfgang Bauer

RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Usage in Models (calculation each 25th of the month)	2= 1927?? ; 2= 1927 ; 9= 1928 ; 9= 1929 ; 11= 1930 ; 6= 1931 ; 1= 1933? ; 2= 1933 ; 1= 1934 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 43

No further Information for

A442

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