Antique radios, Old Time Radios

A442

ID = 2457

Country:

Netherlands

Brand:	Philips; Eindhoven (tubes international!); Miniwatt
Developer:	Philips; Eindhoven (tubes international!); Miniwatt
Tube type:	Screen-grid Tetrode VHF
	Ca. 1925 up to 1945 rare.

Identical to

A442

Similar Tubes

Normally replaceable-slightly different:

410SG ; 4B6_Ultron ; A2004 ; A442K ; C150 ; DS1 ; L409 ; OX304 ; R81Ecran ; RO4142 ; S4 ; VH300

Other base:

A442_UX4

First year

1927 Tube leaflet collection E.Erb Analysis by original leaflets

Base	Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Er) Top contact screw type
Was used by	Radio/TV-reception etc.
Filament	Vf 4 Volts / If 0.06 Ampere / Direct / Battery =
Description	Also made with UX4 base.
Dimensions (WHD) incl. pins / tip	45 x 125 x 35 mm / 1.77 x 4.92 x 1.38 inch
Weight	58 g / 2.05 oz
Literature	- - Manufacturers Literature Taschenbuch zum Röhren-Codex 1948/49


	A442: OWN COLLECTION Loris Bugamelli

A442: R.O.
Rudolf Osterkamp

A442: Telefunken Werkstattbuch
Wolfgang Bauer

A442: RVF-Röhrenbuch-M1,1947
Anonymous 15 Collector

Usage in Models

3= 1927?? ; 2= 1927? ; 7= 1927 ; 1= 1928?? ; 13= 1928? ; 14= 1928 ; 5= 1929?? ; 1= 1929? ; 16= 1929 ; 4= 1930?? ; 1= 1930? ; 34= 1930 ; 8= 1931 ; 6= 1932 ; 1= 1933? ; 2= 1933 ; 1= 1934 ; 1= 1940??

Quantity of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe):120

Museum "Technik-Museum.ch"

Collection of Hartmut Völler (D)

Collection of Thomas Lebeth (A)

Collection of Patrice Zeissloff (F)

Collection of Rudolf Osterkamp (D)

Collection of Wolfgang Bauer (A)

Collection of Christian ADAM (F)

Collection of John Koster (NL)

Collection of Francisc VISKY (RO)

Collection of Andreas Schulz (D)

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