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ID = 2448
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Triode, vacuum   Universal 
  Ca. 1925 up to 1945 rare.
Identical to A209
Similar Tubes
Normally replaceable-slightly different:
  210A_Eagle ; M102 ; M15
Other base:
First year 1925 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
1924 : Saga of the Vacuum Tube, Tyne p.421
15.Jan.1926 : Radio Luistergids, The Netherlands and February 1926

Base Europe 4-Pin B4 (Eu A, E, 4A) 1914 (Codex=Eo)
Was used by Radio/TV-reception etc.
Filament Vf 2 Volts / If 0.06 Ampere / Direct / Battery =
Description Also made with UX4 base. 
Dimensions (WHD)
incl. pins / tip
41 x 98 x 31 mm / 1.61 x 3.86 x 1.22 inch
Weight 37 g / 1.31 oz
Information source - - Manufacturers Literature   R149H 1-11-1926
Taschenbuch zum Röhren-Codex 1948/49   
A209: Collection TL
Thomas Lebeth

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A209: rtt
Michael Schlör

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A209: own collection
Peter den Boer

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from Just Qvigstad

Usage in Models 1= 1926 ; 1= 1927? ; 1= 1928?? ; 1= 1930 ; 2= 1935

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):6

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