Antique radios, Old Time Radios

B405

Country:	Netherlands		Brand:	Philips; - Eindhoven; Netherlands
			Tube type:	Triode, vacuum Power/Output

Tube ID = 2744


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Identical to	B405 = RE124 = LL25 = A25 = DP4 = DU412 = DV27/4 = L4 = L414 = L415 = M54 = U412 = V62 = H_Adzam = P3 = P425 = CL975 = P414 = DX502 = CL104 = TB06 = LX410
Similar Tubes	Normally replaceable-slightly different: 420LL; 4BFF; BFF; C303B; C306B; C_Adzam; P415; R77; SP4_Triotron; TMBF2
First Series	1927 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)	1925 : Saga of the Vacuumtube, Tyne p.421

Base	Europe 4-Pin (A, 4A, B4, since 1914) (Codex=Eo)
Was used by	Radio/TV-reception etc.
Filament	Vf 4 Volts / If: 0.15 Ampere /
Literature	Taschenbuch zum Röhren-Codex 1948/49

g.h.
Gerhard Heigl

Telefunken Werkstattbuch
Wolfgang Bauer

Philips Verstärkerröhren
Gerhard Heigl

Usage in Models (calculation each 25th of the month)	1= 1925 ; 1= 1926? ; 2= 1926 ; 1= 1927? ; 15= 1927 ; 1= 1928?? ; 3= 1928? ; 7= 1928 ; 1= 1929?? ; 2= 1929? ; 23= 1929 ; 1= 1930?? ; 5= 1930 ; 2= 1931 ; 3= 1932 ; 1= 1933 ; 1= 1934 ; 1= 1935 ;
Number of Models at Radiomuseum.org with this tube (valve, valves, valvola, valvole, válvula, lampe): 71

No further Information for

B405

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